Product overview
In ComNav's Shanghai mapping case study, the T300 Plus was placed on a known control point and connected to a DJI Phantom 4 RTK through Wi-Fi to transmit correction data.
The receiver can also operate as a rover to measure checkpoint coordinates for accuracy validation.
The T300 Plus supports PPK as a backup when RTK is unavailable, with PPK operation possible alongside RTK.
Specifications
| Specification | Value & conditions |
|---|---|
| UAV correction link | Wi-Fi correction transmission to DJI Phantom 4 RTKDocumented project configuration with the T300 Plus set up on a known control point. |
| Backup positioning workflow | PPK backup alongside RTKProvided for situations where RTK is not applicable. |
| Model | ComNav T300 Plus GNSS Receiver |
| GNSS channels | 965 |
| Tracked signals |
|
| GNSS technology | Advanced QUANTUM™ Generation III |
| Signal reacquisition and startup times |
|
| Initialization | Time: less than 10 s; reliability: greater than 99.9%RTK initialization. |
| Static positioning accuracy | Horizontal: 2.5 mm + 0.5 ppm; vertical: 5 mm + 0.5 ppmStatic and fast static; RMS. |
| RTK positioning accuracy | Horizontal: 8 mm + 1 ppm; vertical: 15 mm + 1 ppmReal-time kinematic; RMS. |
| Long-observation static accuracy | Horizontal: 3 mm + 0.1 ppm; vertical: 3.5 mm + 0.4 ppmLong-observation static. |
| DGPS, SBAS and standalone accuracy |
|
| Dimensions | 15.8 cm × 7.5 cm |
| Weight | 0.95 kgWith two batteries. |
| Temperature limits | Operating: -40 °C to +65 °C (-40 °F to 149 °F); storage: -40 °C to +85 °C (-40 °F to 185 °F) |
| Humidity | 100%Non-condensing. |
| Water and dust protection | IP67Temporary immersion to a depth of 1 m. |
| Drop resistance | Survives a 2 m dropDrop onto concrete. |
| Power input and consumption | Input: 7–28 VDC; consumption: 1.92 W |
| Battery capacity and runtime | Li-ion: 2 × 2000 mAh; up to 10 hoursRuntime is typical. |
| Memory | 8 GB |
| Serial interface | 1 × 7-pin Lemo serial port; baud rates up to 921,600 bps |
| UHF modem |
|
| Wi-Fi | 802.11b/g/n; 2.4 GHz |
| Cellular modem | 4G: 800/900/1800/2100/2600 MHz; 3G: 900/2100 MHz; 2G: 900/1800 MHz; supports GSM, Point to Point/Points and NTRIP |
| Position output rates | 1 Hz, 2 Hz, 5 Hz, 10 Hz, 20 Hz |
| Indicator LEDs | 5; indicate power, satellite tracking, GPRS status and differential data |
| Tilt compensation | Up to 120° tilt with 2.5 cm accuracyTilt survey using integrated calibration-free IMU. |
| Bluetooth | V4.0; compatible with Windows OS and Android OS |
| Correction data input/output | RTCM 2.x, 3.x, CMR, CMR+ |
| Position data formats | ASCII: GSV, RMC, HDT, VHD, GGA, GSA, ZDA, VTG, GST; PTNL, PJK; PTNL, AVR; PTNL, GGK. ComNav Binary.ComNav Binary updates up to 20 Hz. |
| Survey workflow software | Survey MasterAndroid-based Survey Master software. |
| UAV base-station connection | WiFi correction link to DJI Phantom 4 RTKIn the documented mapping project, with the T300 Plus installed on a known control point. |
| Check-point use | Accuracy validation without participation in data processingApplies to the check points in the documented project. |
| PPK backup | PPK can operate simultaneously with RTKProvided as a backup for situations where RTK is not applicable. |
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