Alpha 400 Visual Positioning RTK
Alpha 400 is a lightweight (680 g) imaging RTK receiver that integrates satellite positioning, IMU and visual technology. With its professional 5 MP camera and image processing engine, coordinates are obtained in real time by tapping the screen, with 2 cm accuracy, even against the light.
Dual-camera AR stakeout switches from long-range to close-up guidance about 5 m from the point (adjustable distance) and reaches 1 cm accuracy in point finding. The IMU needs no initialization: after a few steps it enters inertial navigation mode, with tilt compensation up to 60°.
The built-in dual-mode radio, 2 W fully compatible plus low-power long-range LoRa, works with the main protocols on the market. Alpha 400 can also act as a UAV base station, with configurable serial ports for unmanned systems and LiDAR integration.
- Image measurement with 2 cm accuracy (5 MP camera)
- Dual-camera AR stakeout, 1 cm accuracy
- Initialization-free IMU, up to 60° compensation
- Dual-mode radio: 2 W + LoRa
- UAV base station
- 680 g, IP67
Price
Brochure
ALPHA 400 VISUAL POSITIONING RTK
Download the official brochure for the full technical details.
- Weight
- 680 g
- Dimensions
- 100 × 100 × 80 mm
- Origin
- China
- Manufacturer
- Alpha Surveying
Technical data
| Channels | 1408 |
| Satellite systems | GPS · BDS · GLONASS · Galileo · QZSS · SBAS · NavIC |
| Static accuracy | H ±(2,5 + 0,5×10⁻⁶·D) mm · V ±(5 + 0,5×10⁻⁶·D) mm |
| RTK accuracy | H ±(8 + 1×10⁻⁶·D) mm · V ±(15 + 1×10⁻⁶·D) mm |
| Tilt compensation accuracy | ±(8 + 0,3·TILT) mm |
| Compensation angle | 0–60° |
| Update rate | 200 Hz |
| Image measurement – camera | 5 MP · 52° |
| Image measurement – accuracy | 2 cm / 10 m |
| AR camera – resolution | 2 MP |
| AR camera – field of view | 68° |
| AR stakeout accuracy | 1 cm |
| Radio power | 2 W |
| Radio frequency | 410–470 MHz |
| Radio protocols | TRIMTALK 450S · TRIMMARK · SOUTH 9600/19200 · SATEL 9600/19200 · TRANSPARENT · LoRa |
| Cellular network | 4G |
| Wi-Fi | 802.11 a/b/g/n/ac |
| Bluetooth | BT 5.0 |
| Operating system | Linux |
| Internal storage | 32 GB |
| Data recording | DAT · RINEX |
Device
| Dimensions | 100 × 100 × 80 mm |
| Weight | 680 g |
| Working time (Ntrip / radio receive / radio transmit) | 18 h / 15 h / 8 h |
| Power input | 9–20 V, PD |
| Ports | SMA · USB Type-C |
| Water/dust protection | IP67 |
| Operating temperature | −30 … +70 °C |
| Storage temperature | −40 … +80 °C |
| Pole drop onto hard ground | 1,6 m |
| Humidity | ≤ 100 % |
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