Introduction
The C-RTK 9Ps is a four-star Real Time GNSS system, using two c-RTK 9Ps modules, one for the aircraft and the other for the base station. It also supports dual GPS for yaw which can replace the magnetic compass. This is useful for flight in complex magnetic field environments such as close to power lines. Compared to C-RTK 9P, C-RTK 9Ps achieves similar performance at a lower price. It is a very cost-effective centimeter-level positioning module compatible with PX4/ ArduPilot open-source flight controllers. It is an ideal choice for UAV mapping, agricultural applications, high-precision takeoff and landing, ship takeoff and landing and other applications requiring real-time high-precision navigation.
Multi-star Multi-frequency Receiver
Centimeter-Level Positioning
Dual RTK For Yaw
Double Unit Switch
Ultra-fast positioning
Multi-satellite, multi-frequency receiver combined with advanced RTK algorithms enables the base station to complete convergence and achieve centimeter-level positioning in under 30 seconds.
Dual RTK for yaw，Adapt to complex environment
Dual C-RTK 9Ps can estimate yaw which can replace the magnetic compass. This is useful for flight in complex magnetic field environments such as close to power lines.
Fast switch between sky and rover unit
The C-RTK 9Ps adopts the same design of the two units (sky unit and rover unit), and the two unit use the same firmware. You only need to load different configuration parameters to complete the fast switching
Use as a sky unit
Use as a rover unit
Test Data
Specification
| Main Parameters | |
|---|---|
| Receiver type | 184 channel ZED-F9P(ublox) |
| Compass | IST8310 |
| GNSS | GPS、Beidou、Galileo、GLONASS |
| Number of concurrent GNSS | 4 |
| GNSS Bands | GPS-L1C/A GPS - L2C GLONASS - L1OF GLONASS- L2OF; GALILEO - E1B/C GALILEO- E5b; BeiDou - B1I BeiDou - B2I; QZSS - L1C/A QZSS - L2C |
| Nav. update rate | RTK 20Hz RAW 25Hz; PVT 25Hz (The maximum limit is related to the concurrency setting |
| Position accuracy | RTK：0.01m+1ppm CEP GPS：1.5m CEP; SBAS：1.0m CEP |
| RTK Surveyin-time | RTK<60s |
| Acquisition | Cold starts<24s Hot starts<1s |
| Sensitivity | Cold starts –148 dBm Hot starts –157 dBm Reacquisition –160 dBm |
| Anti-jamming | Active CW detection and removal Onboard band pass flter |
| Anti-spoofng | Advanced anti-spoofng algorithms |
| Antenna gain | Rover：2dBi Base：5dBi |
| PPK | not support |
| GPS heading | Support (requires two C-RTK 9Ps); heading accuracy: 0.4edg (reference value) |
| Base/Rover role swap | Support |
| Protocols | NMEA、UBX binary、RTCM 3.x |
| Interface | |
| UART | 2 |
| USB | 1 |
| Antenna Type | MMCX |
| Physical Parameter | |
| Operating voltage | 4.5V to 6V |
| Operating temperature | –40°C to +85°C |
| Size | 47mm*32mm*12.2mm |
| Weight | 30g(Module Only) |
| Nav.update rate | Moving baseline | Heading accuracy | |
|---|---|---|---|
| GPS+GLO+GAL+BDS | RTK：7Hz GPS*：9Hz | 5Hz | 0.4deg |
| GPS+GLO+GAL | RTK：10Hz GPS*：10Hz | 5Hz | 0.4deg |
| GPS+GAL | RTK：15Hz GPS*：20Hz | 5Hz | 0.4deg |
| GPS+GLO | RTK：14Hz GPS*：20Hz | 5Hz | 0.4deg |
| GPS+BDS | RTK：13Hz GPS*：26Hz | 5Hz | 0.4deg |
| GPS | RTK：20Hz GPS*：25Hz | 8Hz | 0.4deg |
| Remark | "GPS*: as normal GPS, point positioning" | Double GPS for yaw | |
Products Comparision
| C-RTK 9Ps | C-RTK 9P | |
|---|---|---|
| Receiver type | 184 channel ZED-F9P(ublox) | 184 channel ZED-F9P(ublox) |
| Compass | IST8310 | IST8310 |
| GNSS | GPS、Beidou、Galileo、GLONASS | GPS、Beidou、Galileo、GLONASS |
| Number of concurrent GNSS | 4 | 4 |
| GNSS Bands | GPS-L1C/A GPS - L2C GLONASS - L1OF GLONASS- L2OF; GALILEO - E1B/C GALILEO- E5b; BeiDou - B1I BeiDou - B2I; QZSS - L1C/A QZSS - L2C | GPS-L1C/A GPS - L2C GLONASS - L1OF GLONASS- L2OF; GALILEO - E1B/C GALILEO- E5b; BeiDou - B1I BeiDou - B2I; QZSS - L1C/A QZSS - L2C |
| Nav. update rate | RTK 20Hz RAW 25Hz; PVT 25Hz (The maximum limit is related to the concurrency setting | RTK 20Hz RAW 25Hz; PVT 25Hz (The maximum limit is related to the concurrency setting |
| Position accuracy | RTK：0.01m+1ppm CEP GPS：1.5m CEP; SBAS：1.0m CEP | RTK：0.01m+1ppm CEP GPS：1.5m CEP; SBAS：1.0m CEP |
| RTK Surveyin-time | RTK<60s | RTK<60s |
| Acquisition | Cold starts<24s Hot starts<1s | Cold starts<24s Hot starts<1s |
| Sensitivity | Cold starts –148 dBm Hot starts –157 dBm Reacquisition –160 dBm | Cold starts –148 dBm Hot starts –157 dBm Reacquisition –160 dBm |
| Anti-jamming | Active CW detection and removal Onboard band pass flter | Active CW detection and removal Onboard band pass flter |
| Anti-spoofng | Advanced anti-spoofng algorithms | Advanced anti-spoofng algorithms |
| Antenna gain | Antenna gain | Rover：2dBi Base：5dBi |
| PPK | not support | not support |
| GPS heading | Support (requires two C-RTK 9Ps); heading accuracy: 0.4edg (reference value) | Support (requires two C-RTK 9Ps); heading accuracy: 0.4edg (reference value) |
| Base/Rover switch | Support | Support |
| Protocols | NMEA、UBX binary、RTCM 3.x | NMEA、UBX binary、RTCM 3.x |
| Interface | ||
| UART | 2 | 2 |
| USB | 1 | 1 |
| Antenna Type | MMCX | MMCX |
| Physical Parameter | ||
| Operating voltage | 4.5V to 6V | 4.5V to 6V |
| Operating temperature | –40°C to +85°C | –40°C to +85°C |
| Size | 47mm*32mm*12.2mm | 48mm*31.5mm*12mm |
| Weight | 30g(Module Only) | 27g(Module Only) |
