赫星 Here2
The Here2 GPS receiver is an update to the Here GPS module from HEX.
Main features include:
Concurrent reception of upto 3 GNSS (GPS, Galileo, GLOSNASS, BeiDou)
Industry Leading -167 dBm navigation sensitivity
Security and integrity protection
Supports all satellite augmentation systems
Advanced jamming and spoofing detection
购买
ProfiCNC (Australia)
配置
Setup and use on PX4 is largely plug and play.
接线和连接
The Here2 GPS comes with an 8 pin connector that can be inserted directly into the Pixhawk 2 GPS UART port.
The Pixhawk 3 Pro and Pixracer have a 6 pin GPS port connector. For these controllers you can modify the GPS cable (as shown below) to remove pin 6 and 7.
Pin 6 and 7 are for the safety button - these can be attached as well if needed.
针脚定义
The Here2 GPS pinout is provided below. This can be used to help modify the connector for other autopilot boards.
| 引脚 | Here2 GPS | 引脚 | Pixhawk 3 Pro GPS |
|---|---|---|---|
1 | VCC_5V | 1 | VCC |
2 | GPS_RX | 2 | GPS_TX |
0 | GPS_TX | 3 | GPS_RX |
4 | SCL | 4 | SCL |
5 | SDA | 5 | SDA |
6 | BUTTON | - | - |
7 | BUTTON_LED | - | - |
8 | GND | 6 | GND |
技术规范
Processor: STM32F302
Sensor
Compass, Gyro, Accelerometer: ICM20948
Barometer: MS5611
Receiver Type: 72-channel u-blox M8N engine, GPS/QZSS L2 C/A, GLONASS L10F, BeiDou B11, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN
Navigation Update Rate: Max: 10 Hz
Positionaing Accuracy: 3D Fix
Time to first fix:
Cold start: 26s
Aided start: 2s
Reacquisition: 1s
Sensitivity:
Tracking & Navigation: -167 dBm
Hot start: -148 dBm
Cold start: -157 dBm
Assisted GNSS
AssistNow GNSS Online
AssistNow GNSS Offline (up to 35 days)
AssistNow Autonomous (up to 6 days)
OMA SUPL& 3GPP compliant
Oscillator: TCXO (NEO-8MN/Q)
RTC crystal: Build in
ROM: Flash (NEO-8MN)
Available Antennas: Active Antenna & Passive Antenna
Signal Integrity: Signature feature with SHA 256
Protocols & Interfaces:
UART/I2C/CAN: JST_GH Main interface, Switch internally.
STM32 Main Programming Interface: JST_SUR
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