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The JS-CK15-3 is a high-precision GNSS receiver with dual-antenna and inertial navigation, ensuring reliable positioning even in weak signals. It supports fast positioning in complex environments, making it ideal for UAVs, autonomous systems, and precision agriculture.
Product Features
Utilises high-performance chipsets
Incorporates inertial navigation and dual-antenna inputs
Supports on-chip positioning across all satellite systems and frequencies
Maximum navigation update rate of 50Hz, with IMU supporting up to 100Hz
Supports multi-frequency satellite tracking across all constellations
Flexible deployment and straightforward integration
Integrated TCXO, LNA, SAW, RTC
Compact and lightweight (71.0mm × 46.0mm × 9.6mm ± 0.5mm), <16.0g
Supports standard NMEA 0183 protocol, CMR, RTCM 2.X, 3.X
Suppresses potential narrowband and monophonic radio interference signalswithin the GNSS signal band, achieving a signal-to-noise ratio of up to 60dB
RTK positioning accuracy achievable at the millimetre level
Performance Indicators
| Parameter | Specification |
| Receivable Satellites | GPS: L1 C/A, L2P, L2C, L5, L1C |
| BDS-2: B1I, B2I, B3I | |
| BDS-3: B1I, B1C, B2a, B2b, B3I | |
| GLONASS: G1, G2, G3 | |
| QZSS: L1C/A, L2C, L5, L1C | |
| SBAS: L1C/A, L5 | |
| Galileo: E1, E5a, E5b, E5 ALTBoC, E6c | |
| Naval: L1C | |
| L-Band | |
| Tracking Performance (C/N Threshold) | Signal tracking sensitivity: -160 dBm |
| Signal acquisition sensitivity: -145 dBm | |
| Positioning Time | Cold start: 30 s |
| Hot start (using RTC): 10 s | |
| Re-acquisition: 1 s | |
| Measurement Accuracy | Pseudorange accuracy: 10 cm |
| Carrier phase accuracy: 1 mm | |
| Accuracy | PPS (RMS) time accuracy: 20 ns |
| SPP: Standard single point positioning accuracy | |
| Horizontal: 1.5 m | |
| Vertical: 3 m | |
| Velocity accuracy: 0.02 m/s | |
| Auxiliary dead reckoning (error): 3% d (d = distance traveled) | |
| PPP | PPP initial time: 20 min |
| PPP accuracy | |
| Horizontal: 01 m | |
| Vertical: 0.2 m | |
| RTK | RTK initialization time: 5 s (D < 10 km) |
| Initial confidence: 99.9% | |
| RTK accuracy | |
| Horizontal: 8 mm + 1 ppm | |
| Vertical: 15 mm + 1 ppm | |
| Rate: ±125°/s | |
| IMU (Inertial Sensor) | Gyroscope |
| Zero bias repeatability: 0.5°/s | |
| Zero bias stability: 5°/h | |
| Angle random walk: 0.12°/√(h) | |
| Accelerometer | |
| Measuring range: ±2 g | |
| Zero bias repeatability: 20 mg | |
| Zero bias stability: 50 µg | |
| Speed random walk: 0.07 m/s/√(h) | |
| Data Update Rate | Default: 10 Hz |
| Max Data Update Rate | Single point positioning: 0 Hz |
| RTK: 50 Hz | |
| IMU: 100 Hz | |
| Baud Rate | 9600–921600 bps (default 115200 bps) |
| Anti-interference | Capable of suppressing potential narrowband and single-tone radio interference signals within the GNSS signal band; interference-to-signal ratio up to 60 dB |
Pin Parameters
| No. | Name | I/O | Description |
| 1 | RSV | - | Reserved |
| 2 | RSV | - | Reserved |
| 3 | RSV | - | Reserved |
| 4 | RSV | - | Reserved |
| 5 | RSV | - | Reserved |
| 6 | VCC | P | Main power supply |
| 7 | RSV | - | Reserved |
| 8 | RSV | - | Reserved |
| 9 | RESET | I | System reset (low active, low-level effective time ≥ 5 ms) |
| 10 | RSV | - | Reserved |
| 11 | RSV | - | Reserved |
| 12 | RSV | - | Reserved |
| 13 | EVENT1 | I | Event trigger |
| 14 | GND | G | Ground |
| 15 | TXD1 | O | UART1 output |
| 16 | RXD1 | I | UART1 input (input RTCM information) |
| 17 | GND | G | Ground |
| 18 | TXD2 | O | UART2 output |
| 19 | RXD2 | I | UART2 input |
| 20 | GND | G | Ground |
| 21 | PV | - | Reserved |
| 22 | GND | G | Ground |
| 23 | PPS | O | Pulse output |
| 24 | RSV | - | Reserved |
| 25 | RSV | - | Reserved |
| 26 | RSV | - | Reserved |
| 27 | RSV | - | Reserved |
| 28 | RSV | - | Reserved |
Product Application
Unmanned Aerial Vehicles (UAVs)
Automotive Applications
Precision Agriculture
Maritime Navigation
Intelligent Driving Examinations
Surveying and Mapping
Intelligent Robotics
Smart Ports
Power Grids and Electricity
Intelligent Transportation
Protocols
| Output Data Format | Type |
| NMEA 0183 protocol | GPGGA, GPGSV, GPGLL, GPGSA, GPGST, GPHDT, GPRMC, GPVTG, GPZDA etc. |
| Binary format | Custom binary format |
| RTCM 2.x | RTCM1, RTCM3, RTCM9, RTCM1819, RTCM31, RTCM41, RTCM42 |
| RTCM 3.x | 1004–1008, 1012, 1019, 1020, 1033, 1042, 1045/1046, 1230, 4078<br>MSM7: 1073–1077, 1083–1087, 1123–1127, 1093–1097 |
| CMR (GPS) | CMROBS, CMRRREF |
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