Emlid Reach RS2
RS2 is a multi-band RTK / GNSS receiver with centimeter precision. Used for mapping, navigation and more. Used with an intuitive and modern mobile app. The unit can be used alone for connection to NTRIP (Swepos with several) or two or more connected (Base / Rover). The units can also be used for PPK calculation.
Applications - RTK
Two Reach RS2 receivers communicate with each other. One is stationed and another moves freely. They are usually called base and rover. Rover alone cannot calculate the exact position using only satellite signals, it needs a reference. That's what the base unit is for. Rover connects to base and calculates relative position with centimeter precision. They communicate via LoRa radio, which can communicate at a distance of up to 8 km. In addition, several rovers can be connected to a base at the same time.
Applications - PPK, Post-Processed Kinematics
In addition to Reach RS2 supporting RTK, you can also process through PPK, or post-correction to achieve high precision accuracy. This mode requires no real-time connection between base and rover, which makes execution faster and easier. In PPK mode, all raw measurement data is recorded on the units separately and then processed to achieve centimeter precision.
Applications - NTRIP
You do not necessarily need a second unit for RTK. Usually there are local organizations that share their base stations via the Internet. This technique is called NTRIP. Basically, you only borrow the base station from someone in your area. You can also share your own position. NTRIP is a good alternative for temporary use and for areas with strong 3G / LTE coverage. In other cases, the other Reach RS2 device has two advantages: 1) Simple design in remote areas as no internet connection is required. 2) Independent from NTRIP subscriptions and no extra fees from the NTRIP service (Swepos and others).
GNSS - GPS / QZSS, GLONASS L1, L2; BeiDou B1, B2; Galileo E1, E5
Radio receiver / transmitter - LoRa 868/915 MHz, up to 8 km
Running time - 16 hours as 3.5 G RTK-rover (LiFePO4-batteri, 6–40V ingång, USB-laddning)
Connections - Wi-Fi and Bluetooth (for connecting with other devices)
The package contains
1 x Reach RS2
1 x Transport bag with strap
1 x Radioantenn
1 x USB-C-cable