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

$265

Buy

REACH M2

Multi-band
Baseline up to 100 km in PPK

$449

Pre-order

Shipping in January

PPK mapping with centimeter accuracy. Use less GCPs

Why camera synchronization is so important

Usually autopilot triggers the camera and records the coordinate it has at the 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. Also, 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 to use GCPs 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 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 other receiver).

4. Process logs and get a file with geotags of photos

Process RINEX files using the free RTKLIB software. 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 NTRIP service. VRS is also supported.

Compatibility

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

Choosing between
Reach M+ and Reach M2

Reach M+
and Reach RS+

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

Reach M2
and Reach RS2

Provides robust performance and quick initialization. Allows working on long baselines.

RTK

Up to 10 km

Up to 60 km

PPK

Up to 20 km

Up to 100 km

Time to fix

1-2 min

5 sec

Frequency bands

Single-band

Multi-band

RINEX logging update rate

Up to 14 Hz

Up to 20 Hz

Reach M+ UAV mapping kit

Reach M+, Reach RS+ and GNSS antenna

$1124

Buy

Reach M2 UAV mapping kit

Reach M2, Reach RS2 and GNSS antenna

$2543

Pre-order

Comes with an app

ReachView is the easiest to use 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. Event mark feature is a must for aerial mapping as it allows to register precise time when shutter was activated.

Simple log
management

Logs are automatically recorded in internal memory directly to RINEX. 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.

Reach in action

3DroneMapping completes PPK trials with the average zero mean error in all axes

Luke Wijnberg, 3DroneMapping

As a brief synopsis of the results, the maximum deviation of points was no more than 0.09m in all axis. This is an incredible result given the fact that the average pixel size of the resulting imagery was 0.045m. The average mean error in all axes is just few mm!

Tuffwing gets 4cm precision without GCPs with Emlid Reach RTK

Brian Christal, Tuffwing

Tuffwing recently performed integration of Emlid Reach RTK to enable making precision maps without use of GCPs. The system was benchmarked by comparing direct georeferenced model with a set of GCPs, used solely for error detection purposes. Achieved lateral RMS error is just 4cm according to the Pix4D quality report.

Event38 integrates Emlid Reach and starts providing ready-to-go PPK mapping solution

Jeff Taylor, Event38

In this case study, we produced an orthomosaic in the Drone Data Management System™ with 2.45cm horizontal and 5.08cm vertical RMSE, as compared with a survey-grade GPS on the ground.

Specifications
Reach M2

Mechanical

  • Dimensions 56.4 x 45.3 x 14.6 mm
  • Weight 20 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, RTCM3
  • Position output NMEA, LLH/XYZ
  • Data logging RINEX with events
    with update rate up to 20 Hz
  • 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 / 5 Hz GNSS
  • IMU 9DOF

Specifications
Reach M+

Mechanical

  • Dimensions 56.4 x 45.3 x 14.6 mm
  • Weight 20 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 5 mm + 1 ppm
  • Static vertical 10 mm + 2 ppm
  • Kinematic horizontal 7 mm + 1 ppm
  • Kinematic vertical 14 mm + 2 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, RTCM3
  • Position output NMEA, LLH/XYZ
  • Data logging RINEX with events
    with update rate up to 14 Hz
  • Internal storage 8 GB

GNSS

  • Signal tracked GPS/QZSS L1, GLONASS G1,
    BeiDou B1, Galileo E1, SBAS
  • Number of channels 72
  • Update rates 14 Hz / 5 Hz
  • IMU 9DOF

Have a question?
Ask our team

Email us on support@emlid.com or fill in a contact form. We normally reply within one workday. However, in most cases, you will hear from us in a few hours.

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