RTK GNSS modules
for UAV mapping

Positioning with centimeter accuracy in RTK and PPK.For precise UAV mapping with less GCPs

REACH M+

Single-band
Baseline up to 20 km in PPK

REACH M2

Multi-band
Baseline up to 100 km in PPK

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.

NTRIP or another Reach as a base station

To calculate centimeter-precise coordinates in PPK and RTK, Reach needs corrections from a base station. It could be either another Reach receiver or an NTRIP service. VRS is also supported.

Compatibility

Reach M2 and M+ work seamlessly with other Reach receivers over any link and are compatible with any other receiver that supports RTCM3 and NTRIP.

Choosing between
Reach M+ and Reach M2

Reach M+

Reach M+ and Reach RS+
‍If you work within short baselines, then Reach M+ is an optimal choice.

RTK
- Up to 10 km
PPK
- Up to 20 km
Time to fix
- 1-2 min
Frequency bands
- single-band
RINEX logging update rate
- Up to 14 Hz

Reach M2

Reach M2 and Reach RS2
‍Provides robust performance and quick initialization, allowing work on long baselines.

RTK
- Up to 60 km
PPK
- Up to 100 km
Time to fix
- 5 sec
Frequency bands
- Multi-band
RINEX logging update rate
- Up to 20 Hz*

Comes with ReachView 3 app

ReachView is the most user-friendly software for data collection that is available both for Android and iOS. With ReachView, you can control all the features of Reach receivers, such as setting up a base station, logging RINEX data, configuring NMEA output, and monitoring data.

Camera
control

Reach is able to trigger cameras as well as register events. The event mark feature is a must for aerial mapping as it allows the precise time when the shutter was activated to be registered.

Simple log
management

Logs are automatically recorded directly to RINEX in the internal memory. View a list of the logs and download them using the ReachView app.

Monitoring
data

ReachView shows current satellite levels, your location on a map, and much more.

Specifications

Mechanical

Dimensions
- 56.4 x 45.3 x 14.6 mm
Weight
- 35 g
Operating tº
- -20…+65 ºC

Electrical

Input voltage on USB and JST GH
- 4.75 - 5.5 V
Antenna DC bias
- 3.3 V
Avg. consumption @5V
- 200 mA

Positioning

Static horizontal
- 4 mm + 0.5 ppm
Static vertical
- 8 mm + 1 ppm
Kinematic horizontal
- 7 mm + 1 ppm
Kinematic vertical
- 14 mm + 1 ppm

Connectivity

LoRa radio (sold separately)

Frequency range
- 868/915 MHz
Distance
- Up to 8 km
Wi-Fi
- 802.11b/g/n
Bluetooth
- 4.0/2.1 EDR
Ports
- USB, UART, Event

Data

Corrections
- NTRIP, VRS, RTCM3
Position output
- NMEA, LLH/XYZ
Data logging
- RINEX with events
with update rate up to 20 Hz*
*coming with a software update,up to 10 Hz now
‍Internal storage
- 16 GB

GNSS

Signal tracked
- GPS/QZSS L1C/A, L2C
GLONASS L1OF, L2OF
BeiDou B1I, B2I
Galileo E1-B/C, E5b
Number of channels
- 184
Update rates
- 20 Hz* GPS / 10 Hz GNSS
*coming with a software update,up to 10 Hz now
‍IMU
- 9DOF