Here 4 GPS

The Here 4 is a professional High Precision Dual-band RTK Navigation module. It supports multiple GNSS options such as BeiDou, Galileo, GLONASS, GPS, and QZSS. The Here 4 utilizes advanced algorithms and multi-frequency DGNSS signals to quickly achieve an RTK Fix within seconds. This results in highly reliable positioning at an accuracy within centimeters. The Here 4 goes beyond being a simple GNSS module. It combines flight control and navigation functionalities into a single device. With 8 PWM or BDSHOT outputs, an RCIN, a Hotshoe, and a camera trigger, it offers a self-contained solution for accurate mapping and precise control capabilities.
Features
LED embedded with ProfiLEDs. Built-in multiple display modes for notification or navigation signals. Display modes can be selected according to specific scenarios via parameters or onboard Lua Scripting.
Here 4 uses multi-frequency DGNSS signals with advanced algorithms. This allows fast convergence to an RTK Fix, achieving more reliable and stable centimeter-level positioning.
Powerful processing performance provided by a built-in STM32H7 chip. It offers real-time processing and data optimization, and Unmanned Industry standard AP_Periph Firmware.
The tailor-made Dual-band antenna from Taoglas supports L1 and L5 frequencies. It features high gain, high sensitivity, and high stability.
Built-in IMU. Through future firmware updates, Here 4 can achieve tightly coupled DGNSS-INS-fusing solutions.
Equipped with u-blox F9P, a professional high-precision Dual-band RTK navigation module.
CAN FD, real-time, and high transmission rate.
The Here 4 module is 16 x 68mm and 60
Specifications
GNSS systems: GPS, GLONASS, Galileo, and BeiDou + SBAS and QZSS
Receiver type: Dual-band GNSS high-precision receiver
Protocols: NMEA, UBX binary, RTCM 3.3, SPARTAN 2.0.1
Satellite bands: B1I, B2a, E1B/C, E5a, L1C/A, L1OF, L5
Anti-spoofing: Advanced anti-spoofing algorithms
Communication Protocol: DroneCAN 8Mbit/s
Positioning accuracy: 0.01 m + 1 ppm CEP
Navigation update rate (RTK): up to 20 Hz
Sensitivity:
Tracking & Navigation: –167 dBm
Reacquisition: –160 dBm
Cold starts: –148 dBm
Hot starts: –157 dBm
Convergence time (RTK): < 10 sec IMU sensor: ICM42688+RM3100 Antenna: Dual-band antenna Maximum GNSS systems: 4 Maximum speed: 500 m/s GNSS module: NEO-F9P Processor: STM32H757 Acquisition : Cold starts: 25s Aided start: 2s Hot start: 2s Barometer: MS5611 Includes 1x HEX Here4 Multiband RTK GNSS Module