PPK mapping with centimeter accuracy. Use fewer GCPs
Why camera synchronization is so important
Usually autopilot triggers the camera and records the coordinate it has at that moment. When the drone is flying at 20 m/s and GPS works at 5 Hz, that means your autopilot will have position readings only each 4 m, which is not suitable for precise georeferencing. In addition, there is always a delay between the trigger and the actual moment the photo is taken.
Reach eliminates the delay
Reach solves the problem of positioning by connecting directly to the camera hot shoe port, which is synced with the shutter. The time and coordinates of each photo are logged with a resolution of less than a microsecond. This method allows GCPs to be used only to check your accuracy.
1. Connect Reach to a hot shoe port on a camera
Every time a photo is taken camera produces a pulse on a flash hot-shoe connector which is synced to a shutter opening.
2. Fly a drone, Reach will record photo events
Reach captures flash sync pulses with sub-microsecond resolution and stores them in a raw data RINEX log in the internal memory.
3. Download logs from Reach and base station
After the flight, get the RINEX logs from your airborne Reach module and a base station (Reach RS, CORS or another receiver).
4. Process logs and get a file with geotags of photos
Process RINEX files using free RTKLIB software. The produced file with precise coordinates of the photos can be used for georeferencing.
Mechanical
- Dimensions56.4 x 45.3 x 14.6 mm
- Weight35 g
- Operating tº-20…+65 ºC
Electrical
- Input voltage on USB and JST GH4.75 - 5.5 V
- Antenna DC bias3.3 V
- Avg. consumption @5V200 mA
Positioning
- Static horizontal4 mm + 0.5 ppm
- Static vertical8 mm + 1 ppm
- Kinematic horizontal7 mm + 1 ppm
- Kinematic vertical14 mm + 1 ppm
Connectivity
- LoRa radio (sold separately)
- Frequency range868/915 MHz
- DistanceUp to 8 km
- Wi-Fi802.11b/g/n
- Bluetooth4.0/2.1 EDR
- PortsUSB, UART, Event
Data
- CorrectionsNTRIP, VRS, RTCM3
- Position outputNMEA, LLH/XYZ
- Data loggingRINEX with events
- with update rate up to 20 Hz*
- *coming with a software update,
- up to 10 Hz now
- Internal storage16 GB
GNSS
- Signal trackedGPS/QZSS L1C/A, L2C
- GLONASS L1OF, L2OF
- BeiDou B1I, B2I
- Galileo E1-B/C, E5b
- Number of channels184
- Update rates20 Hz* GPS / 10 Hz GNSS
- *coming with a software update,
- up to 10 Hz now
- IMU9DOF
- Reach M2
- Micro-USB cable
- JST-GH 6-pin to jumper pin cable
- JST-GH 5-pin to jumper pin cable