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AGS300 User ManualHigh precision GNSS UAV Positioning
and Orientation System
Contents
Overview............................................................................................................................................ 3AGS300 overview...................................................................................................................... 3Standard configuration list...................................................................................................5Technical parameters............................................................................................................7
Instructions..................................................................................................................................... 9Interface description.............................................................................................................. 9Installation step.................................................................................................................... 12
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AGS300 receiver instruction manual
Working status...................................................................................................................... 15Data storage and reading instructions.............................................................................16GNSS command configuration...........................................................................................17
Contact........................................................................................................................................... 18
Overview
AGS300 overview Standard configuration list Technical parameters
AGS300 overview
The AGS300 is a low-power, high-performance GNSS/INS combined positioning and orientation device, specifically designed for aerospace applications. The AGS300 is lightweight and easy to install. It adopts a high-precision GNSS OEM motherboard and highly integrated MEMS IMU, as well as a lightweight, rugged magnesium alloy metal case, ensures the highest level of quality in measurement data.The AGS300 series is based on a stable and reliable Linux system with a built-in high-performance embedded microprocessor. Its GNSS receiver is 2
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equipped with multiple parallel receive channels, can maximize track and observe all visible GNSS satellite signals. It is equipped with a high-performance inertial measurement unit with good stability, which guarantees the high performance of the system.
The AGS300 provides 3D position accuracy of 0.05 meters, speed of 0.02 m/s, heading accuracy of 0.08 degrees, pitch roll accuracy of 0.03 degrees, and data sampling rate up to 200 Hz. With AGS300, UAV aerial remote sensing can completely eliminate ground image control points, especially for strip-shaped measuring area, irregular shape measuring area, large water area measuring area and high sea wave measuring area, and can be widely applied to drone laser scanning and other direct georeferencing airborne remote sensing areas. AGS300 supports real-time data transmission of UHF radio and 3G communication module, can receive differential data of base station in real time. For the users who required high-precision and real-time in precision agriculture, electricity and other areas, AGS 300 also offers GNSS real-time differential positioning (RTK) function.
AGS300 supports a variety of aerial triangulation software, including Pix 4D, UAV Master, PhotoScan, Smart3D, GodWork, SVS, SkyPhoto, etc., Furthermore, it is applicable to a variety of branded UAV, and is also compatible with all commercial flight control systems.
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AGS300 receiver instruction manual
Standard configuration list
ITEM QUANTITY PICTURE
AGS300 aerial receiver 1
Y type cable (power input and EVENT signal input)
1
Six-core aviation data cable (PPS and GNSS data output)
1
Signal cable: Hot/non-hot shoe cable; (Optional)
1
GNSS aviation antenna 1
4
GNSS feeder 1
Micro SD card (8G Byte, Flash) 1
Power adapter 1
AGS300 battery charging adapter 1
Battery 1
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AGS300 receiver instruction manual
Technical parametersGNSS technical parameters
Tracking signalsGPS：L1、L2GLONASS：L1、L2BDS：B1、B2
Three-axis gyroscope technical parametersRange ±250（°/s)Axis to axis alignment error
±0.05（°）Offset repeatability 0.5（°/sec）Bias stability during exercise
10 （°/hr）Angle random walk 0.5°（/√hr）Rate noise density 0.01（°/sec/√Hz rms）−3 dB bandwidth 330（Hz）Three-axis accelerometer technical parametersRange ±5（g）Axis to axis alignment error
±0.2（°）Offset repeatability ±8 mgBias stability during exercise 1σ
0.05（mg）Speed random walk 1σ
0.05（m/sec/√hr）Noise density 0.105（mg/√Hz rms）−3 dB bandwidth ±5（g）Positioning accuracyPosition 2-5（cm）Velocity 0.02（m/s）Heading 0.08（°）Attitude 0.03（°）Processor and memory configurationProcessor ARM9 industrial processorBuild-in RAM 2x64M Byte SDRAMBuild-in Flash 4M Byte Data Flash；1G Byte NAND FlashMicro SD card Standard 8G，max 32G
Power consumption 2.2W （ Stand-alone ） ； 2.9W （ GPRS communication mode）；3W（radio communication）
Voltage 8 ~ 26 VData sampling rate 200HzStorage format Geosun dedicated POS data formatHardware interface configuration
Indicator light4 LED indicators, 1 for power/operation status, 1 for 3G working status, 1 for GPS working status, and 1 for station status.
Aviation 9-pin Power supply, RS232 serial port, PPS signal output, EVENT
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interface signal input.Aviation 6-pin interface
PPS signal output, RS232 serial port (standard NMEA information output).
Antenna interface 1 GNSS antenna interface, 1 UHF radio antenna interface, 1 3G antenna interface.
USB interface 1 Mini USBSD card slot 1 Micro SD card lotSIM card slot 1 SIM card slotPhysical parameterL*W*H 125mm *85mm*34mmWeight 210g（without board 120g）Antenna weight 40g（without GNSS feeder 18g）Working environmentOperating temperature
–20 °C ~70°C
Storage temperature –40°C ~80°C
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AGS300 receiver instruction manual
Instructions
Interface description Installation steps Working status Data storage and reading instructions GNSS command configuration
Interface description
Aviation 9-pin interface pin definitionPin Signal definition Remarks1 VCC_12V 12V power input positive2 GND Input power ground3 Auxiliary 12V Auxiliary 12V power input positive4 GNSS_PPS GNSS PPS signal output (3.3V level)5 GNSS_Event/Sigal+ GNSS Mark signal input positive (3.3V level)
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6 Sigal- GNSS Mark signal input negative (ground)7 COM_TXD1 COM_DEBUG 232 (device debugging information
output)8 COM_RXD1 COM_DEBUG 232 (device debugging command
input)9 GND System groundAviation 6-pin interface pin definitionPin Signal definition Remarks1 GNSS_PPS GNSS PPS Signal output (3.3V level)2 Reserved non3 Reserved non4 GND System ground5 COM_TXD COM_ 232 （ Standard GGA/ZDA signal output,
baud rate: 115200）6 COM_RXD COM_ 232
Aviation 9-pin/6-pin interface pin：
AGS300 Inertial navigation axis diagram:
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AGS300 receiver instruction manual
The axis of the IMU follows the right hand rule., in the top view of the AGS300, the X axis points upward, the Y axis points to the left, and the Z axis points to the outside of the paper. When installing, be sure to note that the AGS300 installation direction cannot be tilted. At the same time, measure the distance between the antenna and the IMU in three directions: origin is IMU, and the right, front, and top are positive. Must be fixedly connected to the camera!
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Installation stepsImage remote sensing system (aviation photogrammetry) Work installation view:
Laser remote sensing system (airborne radar scanning) Work installation view:
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AGS300 receiver instruction manual
Image remote sensing system work steps:1. Install and fix GNSS aerial antenna and the AGS300 mainframe,
install the GNSS aerial antenna on the top of the nacelle in an unobstructed position, and maintain the position between the antenna and the camera as close as possible; the AGS300 mainframe and the camera are fixed by screws, keep the position and attitude of each other unchanged.
2. Connect the AGS300 and GNSS aeronautical antennas by GNSS feeders.
3. The signal cable includes hot shoe lines and non-hot shoe lines. Hot shoe line: Install the hot shoe head to the camera; non-hot shoe line: the flight control signal line is connected to the flight
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control, and the camera signal line is connected to the camera. Note the core: red is positive for signal and black is negative for signal.
4. Connect the signal line to the Y-line signal terminal; connect the battery to the Y-line power terminal.
5. Check the connection method and confirm there is no error. Connect the Y-line to the AGS300. The installation is complete, waiting for the system startup and GNSS lock satellite.
Note:1. AGS300 equipment GNSS Event Mark signal input, falling edge
trigger, flight control pulse interval requirement is greater than 0.6 seconds, Mark signal high level remains greater than 0.2 seconds。
2. The GSSS_PPS signal output of the AGS300 device is a standard GNSS standard second pulse with rising edge alignment and a high level for 10ms.Laser remote sensing system working steps:
1. Install and fix GNSS aerial antenna and the AGS300 mainframe, install the GNSS aerial antenna on the top of the nacelle and unobstructed position. The spatial position between the antenna and the laser scanner remains unchanged and as close as possible; the AGS300 mainframe and the laser scanner are fixed by screws, keep the position and attitude of each other unchanged.
2. Connect the AGS300 and GNSS aeronautical antennas by GNSS feeders.
3. Connect the PPS in the 6-pin connector to the laser scanner; connect the RS 232 serial port in the 6-pin connector to the laser scanner. The laser remote sensing system does not need to accept the flight control event pulse signal.
4. Connect the 9-pin signal cable to the Y-wire signal terminal; connect the battery to the Y-wire power terminal.
5. Check the connection method and confirm there is no error. Connect the Y-line to the AGS300. The installation is complete, waiting for the system startup and GNSS lock satellite.
Note: 1. The GSSS_PPS signal output of the AGS300 device is a standard GNSS
standard second pulse with rising edge alignment and a high level for 10ms.
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AGS300 receiver instruction manual
Work statusAfter powering the AGS300, keep the aircraft at a standstill for 5 minutes (must not move!) When the observation signal is normal (the first light flashes and the second light is always on), other operations can be performed.
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Indicator
IMU Center
Data storage and reading instructionsAGS300 aviation GNSS/INS combined positioning and orientation equipment, built-in 1G NAND Flash, and supports 2G ~ 32G Micro SD card. The data storage of the AGS300 is described as follows:
When detected that the satellite is already locked, the same file name is created in the AGS300 internal memory and the SD card path for data storage; if no SD card is detected, the data is only saved in the internal memory.
If the storage space of the Micro SD card and the AGS300 are insufficient, the data will be cyclically stored to cover the previous data.
To read the internal memory data of the AGS300, you must create a
blank document copy 2sd.txt on the Micro SD card and install the Micro SD into the AGS300. When connected to the power supply, the system automatically copies the data on the AGS300 internal memory to the Micro SD card "nand_data" directory and clears the internal memory. During the copying process, the red/green lights alternately flash at intervals of 0.5 s. If the flashing stops, the copy is complete.
Note:1. In order to ensure the reliability of the data, it is recommended to
move the internal memory data of the AGS300 into the SD card after each use to ensure the available space of the internal memory for the next measurement.
2. If the red/green lights do not alternately flash at intervals of 1S, it means the system is not working properly. It may be that the current satellite is not locked. At this time, you should check whether the antenna is loose or other causes that may cause the satellite to lose lock.
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AGS300 receiver instruction manual
GNSS command configurationUsers can configure parameters such as GNSS data type, data sampling rate, and camera pulse continuous exposure protection time according to their own measurement requirements and autopilot models. The GNSS data type can optionally record GPS, GLONASS and Beidou data. The data sampling rate supports 1~20Hz, which can be selected according to requirements.Since the auto-driving instrument generally adopts the relay output camera exposure pulse, there is a certain signal jitter. Therefore, in order to protect the AGS300 from the interference signal, the user must set the continuous exposure protection time, which is slightly longer than the autopilot exposure pulse width and less than the exposure time interval. (Usually 100ms longer than the exposure pulse width).Users can request a configuration update file (configure.ini) from our company and save it on the Micro SD card, installing the Micro SD card into the AGS300. After booting up, the data storage application will automatically read the configuration commands in the specified configuration file and save the settings.
Note:1. In image remote sensing applications, users are advised to confirm
the pulse width of the autopilot firstly and inform our technicians. After the configuration command is completed, first test the camera pulse continuous exposure protection time on the ground, after the number of recorded points matches the number of camera photos, the flight is executed.
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ContactThank you for using the high-precision GNSS UAV positioning system-AGS300 of Wuhan Geosun Navigation Technology Co., Ltd. We will do our best to provide you with superior pre-sales and after-sales service. Please let us know your comments when using our AGS300. Your valuable comments will be highly appreciated.
Wuhan Geosun Navigation Technology Co.,Ltd Web：www.geosun-gnss.com.cnTel: +86 27-87504895Fax: +86 27-87504895Add: 4F, Building D, Maker Plaza No.8 West Maodianshan Road, East Lake Hi-
tech Zone Wuhan City, China
© All rights reserved by Wuhan Geosun Navigation Technology Co.,Ltd Technical specifications are subject to change without notice
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