Product overview
Guangdong Zhongke Ruitai Intelligent Technology Co., Ltd.’s ZKRT-RA08W is a millimeter-wave radio altimeter for aircraft integration. It measures height above the ground and separation from objects beneath the aircraft, supplying altitude and range information for hovering, take-off, landing and low-altitude operations. Its mounting applications include unmanned aerial platforms, helicopters and small airships. The product is an aircraft sensing device, with applications including industrial inspection, low-altitude mapping, security operations and special-mission flight.
The physical architecture combines an integrated System-on-Chip with FMCW sensing and a MIMO antenna array comprising four transmit and four receive antennas. The unit measures 136 × 88 × 19.66 mm and weighs 163 g, defining its installation envelope and mass contribution. Listed communication interfaces are UART, RS485, RS232, RS422 and CAN, with altitude and range as the output content. Electrical integration requires a 9–24 V supply, with 12 V typical and power consumption of 1.4–1.6 W.
The detection envelope extends from 0.3 m to 800 m, while output refresh is typically 10 Hz and reaches a maximum of 20 Hz. At -6 dB, the field of view is ±12° horizontally and ±16° vertically. Accuracy is specified by height band: 0.1 m below 100 m, 0.5 m above 100 m and below 300 m, and 0.005%*H above 300 m. Operating limits are -40 to 85 °C and 5% to 95% relative humidity.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Guangdong Zhongke Ruitai Intelligent Technology Co., Ltd. ZKRT-RA08W 800-m UAV Radio Altimeter |
| Product type and processing architecture | Miniaturized millimeter-wave radio altimeter with highly integrated System-on-Chip technology |
| Supported flight carriers | Mountable on unmanned aerial platforms, helicopters, small airships and other flight carriers |
| Measurement purpose | Measures vertical altitude above ground and distance to underlying target objects |
| Operating frequency band | Minimum 76 GHz; typical 77 GHz; maximum 81 GHz |
| Transmit power | Typical EIRP: 11 dBm |
| Data output refresh rate | Typical 10 Hz; maximum 20 Hz |
| Operating mode | FMCW+MIMO |
| Horizontal field of view | ±12°At -6 dB. |
| Vertical field of view | ±16°At -6 dB. |
| Range measurement accuracy below 100 m | 0.1 mH less than 100 m. |
| Range measurement accuracy between 100 m and 300 m | 0.5 mH greater than 100 m and H less than 300 m. |
| Range measurement accuracy above 300 m | 0.005%*H mH greater than 300 m. |
| Minimum detection range | 0.3 m |
| Maximum detection range | 800 m |
| Communication interfaces | UART, RS485, RS232, RS422, CAN |
| Output content | Altitude and range information |
| Overall dimensions | 136 × 88 × 19.66 mm |
| Product weight | 163 g |
| Antenna quantity | 4 TX / 4 RX |
| Operating temperature | -40 to 85 °C |
| Operating humidity | 5% to 95% RH |
| Operating voltage | Minimum 9 V; typical 12 V; maximum 24 V |
| Power consumption | Minimum 1.4 W; typical 1.5 W; maximum 1.6 W |
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