Emlid Reach M+ is a compact and affordable GNSS RTK receiver with built-in IMU for precise navigation and UAV mapping without ground control points. It can provide coordinates down to centimeters in RTK mode. RTK mode requires a Reach M+ UAV RTK Kit.
Emlid RCH102 RTK GNSS Module Features:
RTK positioning for navigation
PPK for UAV mapping
Centimeter accuracy without ground control points
Sync directly with Camera hot shoe port
Control with ReachView app
Products included in Emlid RCH102 Package:
JST-GH 6-pin to jumper pin cable
JST-GH 5-pin to jumper pin cable
Centimeter Accuracy with the Reach M+
The Emlid Reach M+ needs access to corrections for centimeter accuracy. Obtained over the Internet (NTRIP) or a local Reach RS+ base station can be used.
NTRIP (Networked Transport of RTCM via Internet Protocol) allows a RTK GNSS receiver (client) to communicate with a base station (caster) over the internet to achieve cm level accuracy.
A base station is a unitset to a known latitude, longitude and height. This is referred to as a ‘known’ point. This base will keep monitoring the satellites above and will calculate position corrections and send them to the Rover.
An Emlid Reach RS+ is suitable for use as a base station. They are capable of transmitting corrections locally or over the internet. If set up locally, all recorded positions will be relative to the position of the Base Station.
Whether using NTRIP or a RS+ sending corrections over the internet. It is important to note the baseline. The baseline is the term given to the distance between the base station and the GNSS Receiver (Reach M+). The baseline is important, because the atmospheric conditions will be different at different locations. Therefore there will be less accuracy the further the rover gets from the base.