GNSS Product Selection
GNSS Product Selection
Software Development. Prototyping and Training. RTKLIB
Software Development For software development for communication with receivers, USB dongles and magnetic antennas attached to the windowsill are the most convenient options. Dongles are available for all receivers: ELT0084 - NEO-M8N receiver ELT0085 - NEO-M8T receiver ELT0103 - NEO-M9N receiver ELT0164 - NEO-M9V ADR+UDR receiver ELT0095 - ZED-F9T-00B receiver + second SMA connector for 1PPS output ELT0110 - ZED-F9P receiver + second SMA connector for 1PPS output ELT0111 - ZED-F9H receiver + second SMA connector for 1PPS output ELT0147 - ZED-F9T-10B receiver + second SMA connector for 1PPS output For the ELT0147 receiver with ZED-F9T-10B, the best antenna choice is the ELT0140 patch antenna with a 5-meter cable. For all other dongles (which operate in the L1 or L1/L2b range), the recommended antenna is the ELT0012 patch antenna with a 5-meter cable. Prototyping and Training For training and rapid prototyping, smart antennas are the most suitable. They can be attached using either a magnetic mount or double-sided tape. There are two options for smart antennas: First option with USB interface: ELT0155 - NEO-M9N receiver, black antenna ELT0155W - NEO-M9N receiver, white antenna ELT0156 - ZED-F9P receiver, black antenna ELT0156W - ZED-F9P receiver, white antenna Second option with UART or SPI interface (determined by jumper on the board): ELT0171 - ZED-F9P receiver, black antenna ELT0172 - NEO-M9N receiver, black antenna RTKLIB For experiments with RTKLIB, there are many boards based on the NEO-M8T receiver. The best one (and the most expensive) is ELT0055 with a classic Tallysman antenna. The cheapest option is ELT0080. There are also options in between, such as ELT0070, ELT0046, and ELT0062. © Eltehs SIA 2024
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Geodesy. Geomonitoring. Topographic Survey
Complete GNSS Solutions for Geodesy, Geomonitoring, and Topographic Surveys Geodesy: Best GNSS Solutions for Precise Geodetic Measurements In geodesy, precision is paramount. The ideal setup for geodetic measurements involves using a single high-quality GNSS antenna and receiver. We recommend the ELT0123 antenna, which is mounted on a standard geodetic pole, paired with the ZED-F9P receiver. This combination is suitable for both base stations (to receive RTK corrections) and rovers (for precise geodetic surveys). We also recommend the ELT0087 board with mini-USB and JST SH connectors, featuring 12 pins and a stabilizer for ultra-low noise. This feature is critical when sharing power between a GNSS receiver and other devices like radio or GSM modems. Alternatively, consider ready-made "Geodetic Kits" for a streamlined solution. Geomonitoring: Monitor Infrastructure with Precision Geomonitoring involves tracking the movements of key infrastructure, including tower tops, bridges, lock walls, and landslide-prone slopes. For monitoring relative deviations (rather than absolute positioning), a more cost-effective solution is the ZED-F9H rover, which provides reliable data for your geomonitoring needs. The ELT0098 board with mini-USB and JST SH connectors (12 pins) ensures stable operation with low noise, ideal for systems powered by a shared power source that also supports a radio modem or GSM modem. Topographic Surveys: High-Accuracy GNSS Kits for Mapping For accurate topographic surveys, such as mapping footpaths on OpenStreetMap or updating a sports orienteering map, the ELT0129 rover geodetic kit is the optimal choice. Explore more options in the "Geodetic Kits" section for tailored solutions. These kits provide the high-precision measurements necessary for creating accurate maps and conducting professional surveys. © Eltehs SIA 2024
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Timing - Definition, Meaning, Usage Examples
Timing. There is a lot of information about different timing systems in "So Different Timing" Accurate Time To obtain accurate time, there are five receivers that provide different levels of time accuracy. They are: NEO-M8T LEA-M8F ZED-F9T-00 ZED-F9T-10 NEO-F10T Affordable and Efficient The most affordable way to obtain accurate time is by using the NEO-M8T receiver. It provides second-level pulses with noise (Standard deviation) up to 20 nanoseconds (under open sky) and a jitter of 11 nanoseconds. In other words, the overall dispersion will be 31 nanoseconds. There are two boards based on this receiver: ELT0065 with SMA and 12 contacts ELT0050 with IPEX and JST SH with 12 contacts. The recommended antenna is ELT0124 with 35 dB LNA amplification. This is sufficient for using a long cable. Anti-Spoofing Protection + Reliability For protection against time spoofing (in case of reception loss), increased stability, and other purposes, the LEA-M8F receiver is recommended. This receiver differs significantly from others in that it adjusts the frequency of its clock generator to match the accurate time from GNSS. This results in low noise, detection of spoofing, and the ability to operate for some time without satellite reception. The LEA-M8F provides second-level pulses with noise (Standard deviation) up to 20 nanoseconds (under open sky) and a jitter of 2 nanoseconds. In other words, the overall dispersion will be 22 nanoseconds. There is a board available for this receiver, the ELT0030 with an SMA connector and 12 contacts. The suitable antenna is the ELT0124. More Accurate and Expensive The ZED-F9T receiver offers even higher accuracy. Both variants of this receiver provide second-level pulses with noise (Standard deviation) up to 5 nanoseconds (under open sky) and a jitter of 4 nanoseconds. In other words, the overall dispersion will be 9 nanoseconds. If the device will be used outdoors, the most affordable solution is the ELT0090 board, which includes both the receiver and an antenna. This board has a mini-USB and a JST SH connector with 12 pins. If the device will be used indoors, a separate antenna on the roof or pole is required. The choice depends on whether you want to use the receiver and antenna for the L1/L2 frequency range (ZED-F9T-00) or the L1/L5 frequency range (ZED-F9T-10). On one hand, the L1/L2 option has more satellites, while on the other hand, L1/L5 is more progressive and slightly more accurate. For L1/L2, there are three boards with an SMA connector. The ELT0088 board differs in the presence of a stabilizer with an extremely low noise level. This is important if synchronization is needed for radio transmitters or other devices with a high level of power supply interference. The outputs include mini-USB and a 12-pin JST SH connector. The drawback of this board is that it only has one time stamp output. The other two boards, ELT0094 and ELT0113, are very similar and differ only in the presence of mini-USB on ELT0113. They have 12 contact outputs. The power stabilizer on these boards is standard, but they have two time stamp outputs. The standard L1/L2 antenna for rooftop or mast placement is the ELT0123, which is mounted on a geodetic pole. This antenna has a very high LNA gain (40 dB). As for affordable options, there is the patch-antenna ELT0012 (but it requires a groundplane) with a gain of 28 dB helix antenna ELT0170 with a gain of 36 dB. Both of these antennas are mounted with screws, so there may be issues with water ingress or snow accumulation when placed on a roof. It's worth noting that the longer the coaxial cable from the antenna to the receiver, the more losses it incurs. And the higher the losses, the stronger the LNA gain needed for quality reception. For L1/L5 with boards, everything is similar, so let's repeat. There are three boards with an SMA connector. The ELT0141 board differs in the presence of a stabilizer with an extremely low noise level. This is important if synchronization is needed for radio transmitters or other devices with a high level of power supply interference. The outputs include mini-USB and a 12-pin JST SH connector. The only drawback of this board is the lack of multiple time stamp outputs. The other two boards, ELT0144 and ELT0145, are very similar and differ only in the presence of mini-USB on ELT0145. They have 12 contact outputs. The power stabilizer on these boards is standard, but they have two time stamp outputs. With L1/L2 antennas, the options are slightly worse. There are no antennas available for mounting on a geodetic pole or antennas with high-gain LNA. The most suitable antenna is the ELT0170 helix-antenna with 36 dB gain, and the affordable ELT0140 patch-antenna (but it requires a groundplane) with 28 dB gain. Both of these antennas are mounted with screws, so there may be issues with water ingress or snow accumulation when placed on a roof. For better quality, the ELT0148 antenna (preferably with a ground plane) with 25 dB gain can be used, but a housing needs to be constructed for it. Remember that the longer the coaxial cable from the antenna to the receiver, the more signal loss it incurs. Higher LNA gain is required for quality reception when there is more signal loss. Other Applications: All timer configurations have already been described, so below are only the applications of the configurations described for other tasks. Synchronization: This task involves synchronously timestamping different receivers that are spaced apart. When using RTK, the time deviation between receivers is smaller than the receiver's time deviation from atomic time or UTC. Both L1/L2 and L1/L5 options of the F9T provide second-level pulses with noise (standard deviation) of up to 2.5 nanoseconds (under open sky) and a jitter of 4 nanoseconds. The overall deviation will be 6.5 nanoseconds. The choice between L1/L2 and L1/L5 depends on the base receiver (in a synchronization system, all receivers should operate in the same frequency range and ideally have the same antenna and cable length). The configurations themselves are described in the "More Precise and Expensive" section. Accurate frequency output: The NEO-M8T (section "Affordable and Efficient") can output frequencies from 0.25Hz to 10MHz. The ZED-F9T (section "More Precise and Expensive") can output frequencies from 0.25Hz to 25MHz. The LEA-M8F (section "Spoofing Protection + Reliability") can output frequencies from 0.25Hz to 2Hz and 30.72MHz. Frequency measurement: The LEA-M8F receiver is an amazing receiver. That's why its description resembles giving the same film seven "Oscars." Please refer to the configuration in the "Spoofing Protection + Reliability" section. Time synchronization with atomic clocks: Yes, you guessed it, it's the LEA-M8F again, and once again, it's in the "Spoofing Protection + Reliability" section. Accurate time with rare satellite visibility: Yes, it's the LEA-M8F again, and once again, it's in the "Spoofing Protection + Reliability" section. This receiver can provide accurate time with a deviation of no more than 100 nanoseconds even without satellite reception for a day. © Eltehs SIA 2024
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How to choose receivers and antennas for cars?
Antennas for cars. These antennas have an SMA connector at the end of the cable, IP67 protection rating, and L1/L2b frequency ranges. Therefore, the choice of antenna does not depend on the choice of the receiver. Antenna for heavy conditions: The most reliable car antenna is the ELT0153. The rod of this antenna is fixed in a hole and securely screwed to it with a nut. The antenna is grounded by what it screws into. The cable with a TNC connector is connected through the rod. This antenna is resistant to everything except snow, heavy rain, and meteorite impacts. Recommended for tractors, construction equipment, agricultural machinery, and quarrying equipment. Antenna against snow and water: In snowy conditions, a different design is used. The ELT0123 antenna is screwed onto a rod and can be raised above the roof to the desired distance. Therefore, it is needed in conditions when the roof is flooded with water or covered with snow. It has its own groundplane and is attached to a geodetic pole, while the TNC cable is connected separately. This antenna is recommended as a cheap geodetic antenna, base station antenna, and antenna for conditions with heavy snowfall or waterlogging. Antennas with screw mounting: Antennas with screw mounting may be suitable for cars driving on highways and streets. These include the ELT0158 antenna and the cheaper ELT0012. Both have IP67 rating, L1/L2b frequency range, and an external groundplane is desirable for both. However, ELT0158 is slightly larger in size, has higher LNA gain, and smaller phase center dimensions. Additionally, ELT0158 can be attached with double-sided tape. Both antennas are recommended when low frontal resistance is required (e.g., for racing cars) or when resistance to natural phenomena is simply not needed. Antennas with magnetic mounting: Antennas with magnetic mounting are suitable for testing various GNSS devices. They allow you to install the antenna on the roof of the car, conduct tests, and remove it. In addition to the above-described ELT0158 and ELT0012, there is also ELT0157, which differs from ELT0158 by the absence of mounting ears for screws. Receivers for cars. There are only 4 suitable receivers for cars, but there are quite a few boards available. You need to choose three parameters: Whether centimeter-level accuracy is needed Whether coordinates are needed when satellite reception is unavailable (Dead Reckoning) Whether high update rates are required (e.g., for racing cars) It is important to note that for automotive dead reckoning (ADR), you need to somehow obtain output from the odometer (e.g., through the OBD-II bus). Currently, this is a challenging task, but a solution is being prepared. For high accuracy and ADR, the ZED-F9R receiver is recommended. The solution rate can be up to 30 times per second. The board for this is ELT0117, which has mini-USB and 14-pin outputs. For just high accuracy, the ZED-F9P receiver is suitable. There are three boards with SMA connectors: ELT0087 (mini-USB and JST SH with 12 pins) ELT0092 (14 pins) ELT0112 (mini-USB and 14 pins) There is also one board with an IPEX connector for installation inside the device, which is ELT0128 (14 pins). To connect it to the antenna, a patch cord ELT0126 is required. Due to the presence of a stabilizer with extremely low noise levels, ELT0087 is the best among them. For normal accuracy and ADR, the NEO-M9V receiver is suitable. It also supports UDR (without odometer sensor) and has a solution rate of up to 50 times per second. There are two boards with SMA connectors: ELT0165 - regular (horizontal) with 12 pins ELT0173 - vertical with mini-USB and 6 pins Additionally, there is ELT0159 with an IPEX connector (a patch cord ELT0126 is required to connect it to the antenna) and a JST SH connector with 12 pins. It is only possible to physically connect the wheel rotation sensor through the "wheeltick" and "dir" contacts in ELT0165 and ELT0159. In ELT0173, only software transmission is available through the UBX-ESF-MEAS packet of the UBX protocol. For just normal accuracy, the NEO-M9N receiver is suitable. There are also two boards, both with SMA connectors, mini-USB, and 6 pins. These are the regular (horizontal) ELT0101 and the vertical ELT0107. © Eltehs SIA 2024
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What module to choose for a tracker?
Trackers The most important aspect for a tracker is low power consumption. The board with the lowest power consumption is ELT0169 with the SAM-M10Q receiver (from 21 mW in power-saving mode GPS+GALILEO to 37 mW in regular mode with all four satellite systems). However, it has poorer reception quality due to the absence of a ground plane. The ELT0150 receiver with the ELT0176 antenna. With an external ground plane, the reception quality improves, but the power consumption ranges from 45 mW in power-saving mode GPS+GALILEO to 61 mW in regular mode with all four satellite systems. The board ELT0151 with the ELT011 antenna. This antenna is larger in size and provides even better reception quality, especially with an external ground plane. However, it does not support GLONASS reception, and Beidou needs to be switched to receive B1C. The power consumption ranges from 43.5 mW in power-saving mode GPS+GALILEO to 55.5 mW in regular mode with three satellite systems (excluding GLONASS). © Eltehs SIA 2024
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Ultimate Guide to Drone Module Selection
Drones The most important characteristic for drones is their weight. Weight: 6.2 grams For the lightest drones, weight is the most crucial factor. If you take the ELT0150 board weighing 4 grams and the ELT0176 antenna weighing 2.2 grams, you will get an ultra-light and affordable solution weighing 6.2 grams with very low power consumption due to the use of the MAX-M10S receiver. The reception quality of this antenna can be improved with a homemade ground plane. The board uses a 6-pin JST SH connector and has I2C and UART interfaces at TTL levels. To receive Beidou signals, you need to switch the receiver to the B1C signal instead of B1I. Weight: 7.5 grams The most suitable board is the ELT0169 with the SAM-M10Q receiver. The board interfaces include I2C and UART at TTL levels, and it weighs 7.5 grams with a 6-pin JST SH connector. There is an alternative board of similar weight, the ELT0020 with the MAX-M8Q receiver, but they have almost three times higher power consumption and cannot receive Beidou signals. Additionally, the ELT0020 does not support I2C and is significantly more expensive. The advantage of this option is its very low weight, but the drawback is the poor solution quality due to the use of a small patch antenna without a ground plane. Weight: 14 grams, Pixhawk For the Pixhawk autopilot, a board with a magnetic compass is required. The lightest board with the LIS3MSL magnetic compass is the ELT0102 with the M9N receiver, weighing 14 grams. It has a mini USB connector and 6 contacts with a UART interface for the receiver and an I2C interface for the LIS3MSL compass. The advantage is its low weight, but the drawback is its very small groundplane, which affects reception quality. The ELT0099 board is a slightly improved version of the ELT0102, weighing 29 grams. It has the same connectors and interfaces, but both the antenna and ground plane are larger, resulting in better reception quality. The ELT0024 board weighing 16 grams, with the MAX-M8Q receiver, is chosen mainly for its small size (25x25 mm), but it does not have a mini USB connector. Due to its minimal size, it has worse reception than the 14-gram ELT0102, and due to the outdated receiver, it can receive only 3 satellite systems simultaneously, while the M9N can receive all 4 major satellite systems simultaneously. Unfortunately, there are no similar boards for M9V and M10S receivers. Weight 18 grams For heavier drones, there is a lightweight Helix antenna ELT0124 for L1 frequency weighing 11 grams. This antenna screws onto an SMA connector and is held solely on the connector, so it is only suitable for boards with this connector (see section "Boards with SMA Connector") assembled on single-frequency receivers. The most optimal receiver is the NEO-M9V. The advantage of this receiver is a solution rate of up to 50 times per second and the ability to obtain coordinates with some accuracy without satellite reception, for example, when flying under bridges, due to UDR technology. The best board for M9V is the ELT0165 (weight: 6.8 grams) with 12 contacts and interfaces such as UART, I2C, SPI, and USB. Slightly heavier is the ELT0173 board weighing 9 grams, with a mini USB connector and 6 contacts with I2C and UART. The second option is the MAX-M10S receiver. The advantage of this receiver is low power consumption. The ELT0151 board weighs 7 grams and has a JST SH connector with I2C and UART interfaces. Weight 18 grams, Ardupilot Since Ardupilot requires SPI, the lightest set for it is the ELT0124 and ELT0165 described above. The advantages are a 50 Hz solution rate and UDR. Weight 29 grams and RTK The set for receiving with centimeter accuracy (RTK) at a distance of up to 50 km from the base station (see "RTK and PPP") is based on the ELT0014 (or ELT0014W) antenna for the L1/L2b range weighing 20 grams and the ZED-F9P receiver. This antenna screws onto an SMA connector and is held solely on the connector, so it is only suitable for boards with this connector (see section "Boards with SMA Connector") assembled on a dual-frequency receiver ZED-F9P. The optimal set is the ELT0091 bundle, consisting of the ELT0014 antenna and the ELT0087 board (weight: 9 grams) with mini USB and JST SH connectors on 12 contacts with interfaces such as I2C, SPI, and 2 UART. The ELT0092 board differs only in having 14 contacts instead of connectors, and the ELT0112 board is slightly heavier (11 grams) and, in addition to 14 contacts, has a mini USB connector. The best of them is the ELT0087 with an extremely low noise level stabilizer. To improve reception, you can use a higher quality but more expensive and heavier ELT0121 antenna (ELT0121W) weighing 35 grams or a slightly more modest ELT0170 antenna weighing 32 grams. Another option is the ELT0152 corner antenna weighing 28 grams.
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Satellite compass
Why Satellite Compasses Are Essential for Modern Navigation in Drones, Ships, and Cars In today’s world, advanced navigation systems are indispensable for accurate positioning and control, especially in fields like drone operations, maritime navigation, and vehicle tracking. Among the most reliable solutions, satellite compasses have emerged as a crucial tool. They surpass traditional magnetic and gyrocompasses in terms of accuracy and versatility. The Challenges of Traditional Navigation Systems in Different Applications Issues with Magnetic Compasses in Ships and CarsModern ships, despite being constructed from iron, face significant challenges with magnetic compasses. When iron ships are exposed to the Earth's magnetic field, they become magnetized, which distorts compass readings. This effect is especially pronounced in northern latitudes, where the top of the ship's structure is drawn toward the south magnetic pole, and in southern latitudes, where it’s the opposite. This makes magnetic compasses expensive and complicated to calibrate. A satellite compass, on the other hand, is far more affordable and eliminates these calibration challenges. Cars also face similar issues with magnetic compasses due to the metal body structure. The metal interferes with the magnetic field, leading to inaccurate readings. The Challenges of Magnetic Compasses in DronesIn drones, especially those made from plastic components, the situation improves, as they have fewer magnetized parts. Drones typically use magnetometers, which work well in open areas and forests. However, problems arise when flying near reinforced concrete buildings or steel structures. These create strong magnetic interference, which can result in inaccurate readings. Additionally, powerful drone motors emit electromagnetic noise that further distorts the compass readings. Importantly, magnetic compasses point toward the magnetic pole, not the geographic pole, which means the declination needs to be adjusted for accuracy. Gyrocompasses vs Satellite Compasses: Which is Better? The Limitations of Gyrocompasses. Gyrocompasses rely on integrating small rotations to determine direction, but they have their own set of limitations. These systems accumulate error over time, and cheaper models may lose their course in seconds. Higher-end models may perform better, with course loss occurring over hours. Additionally, they require lengthy stillness to properly calibrate, which isn’t always feasible in dynamic environments. Advantages of Laser and Fiber-Optic Gyroscopes. Laser and fiber-optic gyroscopes provide exceptional accuracy and are the preferred solution for high-precision applications. However, these systems are bulky and expensive, making them less practical for consumer and commercial use compared to satellite-based systems. Why Satellite Compasses Are a Game-Changer No Need for Calibration and Minimal Error. Satellite compasses offer numerous benefits over their counterparts. They do not require complex calibration and tend to provide a highly accurate heading. A typical satellite compass can measure one angle per second with excellent precision, with errors being minimal over time. More importantly, the system works under nearly all conditions and environments, offering unparalleled reliability. Superior Performance in Challenging Environments. Unlike traditional systems, satellite compasses excel in environments where signals are obstructed, such as in cities with tall buildings, mountain slopes, or even urban areas with dense architecture. They are also immune to multipath interference, meaning they adjust to obstacles that reflect satellite signals. This makes them ideal for use in urban and rugged terrains where traditional systems might fail. The Future of Navigation: Satellite-Inertial Compass The ultimate solution in navigation technology is the satellite-inertial compass. This innovative system combines satellite data with an inexpensive inertial gyroscope, offering enhanced accuracy and reliability. Capable of providing up to 100 solutions per second, it can operate under conditions where signal reception is weak or unavailable, such as in tunnels or beneath bridges.With its cost-effectiveness, accuracy, and ability to work in diverse environments, the satellite-inertial compass represents the future of navigation systems in drones, vehicles, and ships. © Eltehs SIA 2024
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Logger
Logger with ZED-F9P Receiver Logger Features Antenna Connection and Mounting. A logger is a small box that contains the ZED-F9P receiver. At the top, it has an SMA connector for attaching the antenna. At the bottom, there is a 1/4 inch nut, similar to those on cameras, to use household tripods. The logger is attached to a geodetic rod with a 5/8 inch screw using an adapter (incl. in the kit). USB Connection and Control. To communicate with the receiver and change its settings, you can use the USB type C connector and the u-center software on your computer. To facilitate connection to the computer, a 1.8-meter USB type C - USB A cable is included. Power Supply and Bluetooth Module Powered by Rechargeable Batteries. The logger is powered by three AA-sized rechargeable batteries, which can be charged via USB. The kit includes ENELOOP PRO batteries. Bluetooth and Wi-Fi Module Integration. To receive or transmit corrections, a Bluetooth module with a mikroBUS™ connector is inserted into the logger, designed in Clickboard™ format. See "Bluetooth Modules" for easier module selection. WiFi modules in the same format are also planned for use. The purpose of the module is to provide communication between the logger and a smartphone, which already has internet access. For rover operation on a smartphone, it is recommended to use the SW Maps program with the built-in NTRIP client, and for the base, the recommended NTRIP server is YCServer. Data Storage and System Configuration Recording Tracks on the micro-SD Card. The logger has a 2GB micro-SD card for recording tracks. This capacity is sufficient for approximately 2 weeks of recording. It is permissible to use micro-SD cards with capacities of up to 16GB, which can provide up to 4 months of recording. The card stores both raw measurements in the RAW Ublox format (which can be converted to RINEX format using RTKLIB) and tracks with waypoints in GPX format. The logger has a WP button for setting waypoints. USB Type C Connector Functions. The USB type C connector serves multiple purposes. Firstly, for charging the batteries. Secondly, for receiver configuration. Thirdly, for downloading logs from the micro-SD card. And fourthly, for firmware updates of the logger. The same WP button is used to switch the USB from accessing the USB COM port of the receiver to accessing the micro-SD card. Indicators and Buttons on the Housing The logger’s housing features the following indicators: Power on GNSS signal reception RTK correction reception RTK fix indication Waypoint creation indication Wireless connection indication Battery discharge indicator USB status indicator However, there are only two buttons on the housing: one for turning on and off the logger, and the WP button for setting waypoints and changing the USB mode. © Eltehs SIA 2023
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What Are Geodetic Kits?
What Are Geodetic Kits? A Guide for Professionals and Enthusiasts in Geodesy and Geomonitoring Geodetic kits are pre-assembled sets of equipment designed for organizing geodetic surveys. These kits offer an affordable and efficient way to explore geodetic technologies, cartography, and geomonitoring. Whether you are involved in geodesy, drone mapping, or precision agriculture, these kits can help you perform high-accuracy surveys and collect valuable data in the field. Site configuration and mapping: Determine the exact layout of a site and create accurate maps. Structural monitoring: Record the sway of a tower during wind gusts or observe the oscillations of a bridge, providing valuable structural data. Sports orienteering mapping: Update orienteering maps with centimeter-level precision, including locations of control points. Field topographic surveys: Perform land surveys and add footpaths, benches, or other features to Open Street Map with high accuracy. These kits are equipped with all the necessary components for field use: Antenna (choice depends on purpose): Select between a base or rover antenna. 5-meter antenna cable (for base use only): Essential for setting up the base station. Logger (refer to the "Logger" section for more details): Helps manage and store survey data. ZED-F9P receiver: Configured for either base or rover use, providing high-precision GNSS data. Bluetooth modules: Enabling wireless communication, with future plans for Wi-Fi module availability. 3 ENELOOP PRO AA rechargeable batteries: Provide long-lasting power and can be charged via USB. 2GB micro-SD card: For storing survey data. Adapter from ¼ inch to ⅝ inch thread: Ensures compatibility with different tripods. Screwdriver: For assembly and adjustments. 1.8-meter USB type C to USB A cable: Used for data transfer and charging (see "USB Type C - USB A Cables"). Waterproof transport case: Keeps all components safe and dry during transport (see "Waterproof Transport Cases"). Geodetic Kit Options: ELT0129 - Rover Kit The ELT0129 is a rover kit that includes a range of antenna options to suit different applications, such as the ELT0121, ELT0014, and ELT0012 antennas. This kit is ideal for users who need high-precision mobile geodetic data collection. ELT0130 - Base Kit The ELT0130 is a base kit that uses the ELT0123 antenna with a 5-meter cable, providing a reliable foundation for geodetic surveys. ELT0131 - Rover and Base Kit Bundle The ELT0131 is a special bundle consisting of both the rover and base kits, offered at a lower price compared to purchasing the individual kits separately. This bundle is perfect for those looking to set up a complete geodetic survey system at a cost-effective price. © Eltehs SIA 2023
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Hardware and software solutions for high-precision satellite navigation and orientation
HW & SW SOLUTIONS FOR HIGH PRECISION SATELLITE NAVIGATION AND ORIENTATION: We have mastered RTK and PPP technologies using differential phase correction (receiving corrections from base stations) and GNSS ephemeris correction (without base stations); Fully in house developed flexible SW adaptable to any applications; Proprietary leading class processing algorithms; Experience in creating both consumer level GNSS equipment and complex systems based on high precision GNSS technologies; Own manufacturing capabilities; 1ST. SOLUTION: GNSS 3D DEFORMATION MONITORING SYSTEMS FOR INFRASTRUCTURE OBJECTS AND GROUND Automatic detection of position, movement and fluctuation in real time and in post processing Threshold alarm generation Complete remote monitoring solution with optional 3 rd party sensors support The root mean square (RMS) error: in a quasi static mode 5 mm in a real time mode 15 mm 2ND SOLUTION: CANAL LOCK MONITORING OF THE CHAMBER WALLS DURING "FILLING EMPTYING" CYCLE Mutual displacement of the opposite chamber walls Mutual displacement of adjacent chamber sections 3RD. SOLUTION: RTK MODE NAVIGATION AND AUTOMATED DRIVING COMPARED TO TRIMBLE SOLUTION 4TH SOLUTION: PPP-RT MODULE We have developed a software that implements PPP RT navigation mode and a navigation module using it 5TH SOLUTION: SATELLITE NAVIGATION COMPASS Accurate determination of a vessel heading, pitch, roll, speed over ground and coordinates using GNSS signals Can be used as a component of depth measurement complexes, in dredging, construction, hydrography RMS error: heading 0,15°/L pitch, roll 0,35°/L (L- antenna base length in meters) 6TH SOLUTION: NAVIGATION SET WITH BASE STATION AND ON-BOARD UNIT FOR AUTOMATED HARVESTER DRIVING. Set has RTK and «satellite compass» functions and execute automated driving with 1-2 cm of accuracy Software features: Detour of the field boundaries; Driving in a straight line (with a return to a given trajectory from an arbitrary position); Driving along parallel straight lines (with width of the tooling compensation); Automatic U turn at the operator's command; Automatic U turn upon reaching the border of the field (with access to the next passage Compensation of processed field unevenness Accuracy of keeping a harvester on a given trajectory since the first centimeters 7TH SOLUTION: AUTOMATED HARVESTER DRIVING Manual driving Automatic driving 8TH SOLUTION: AUTOMATED HARVESTER DRIVINGNAVIGATION SET WITH BASE STATION AND ON-BOARD UNIT 9TH SOLUTION: RAILWAY APPLICATIONS Track measuring trolley with RTK, satellite compass and laser scanners, mm level accuracy Testing of a new single pass technology of railway track alignment, mm level accuracy Integrated navigation solution based on GNSS signals in DGNSS/RTK mode with MEMS based navigation for a locomotive Ask a Question © Eltehs SIA 2023
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