Reach RS

Yes! Now you can buy a GNSS GPS for under 1000 US Dollars. Emlid has created “Reach RS” GPS for the cheapest price. So that ever-ready surveying, mapping and data collection can be done with centimeter accuracy. There is no need of a controller, just download the ReachView app in you smartphone and configure the Rover base Connection.

The main features are

  • GNSS   -GPS, GLONASS, BeiDou, Galileo, QZSS and SBAS
  • Long range radio- LoRa 868/915 MHz for reliable correction on distances up to 8 km
  • Wi-Fi and Bluetooth- To connect to your device
  • 2 GB storage- For logs and solution tracks
  • 30 hours battery – LiFePo4 battery, USB charging, external 5-40V input
  • Dual-feed antenna- With tight phase center variation

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Is it possible to Survey without vertically holding the GPS Pole?

Is it possible to Survey without vertically holding the GPS Pole?

Is this Land Surveyor doing right?

In common sense no one will accept the surveyed data in above manner. But time has changed. Nowadays you can survey in any angle without holding the pole vertically.

The Leica GS18 T is the world’s first tilt compensating rover, so that you can survey without holding the rover vertically. As above image depicts you can measure even under a vehicle truck. You will save a lot if time because it is  no longer needed to hold the pole vertical to level the bubble. Read More

Basic methods of GNSS/GPS setup or measurement


As we know a typical GPS setup needs a base and rover. The Base is setup in the known control point and the rover used for the surveys. Leica GS 15 GPS is taken as example in this post. It can be set up in 3 different methods for the GPS Surveying. They are

  1. Setting up with internal antenna
  2. Setting up with external Radio or antenna
  3. Setting up with GSM modem

It will be described briefly how above mentioned system works.

1.Setting up with internal antenna

In this method the small “L” shaped antenna is fixed in the base and rover. The following photos shows typical internal antenna. The range of coverage  is around 2 km. This method is simple and fast but less coverage. Read More

How to Calculate Scale Factor (in Land Surveying)

How to Calculate Scale Factor (in Land Surveying)

scale factor

A map projection provides a means of representing the curved surface of the earth on a plane surface so that coordinate grids can be defined and maps drawn. The relative positions of points on the grid are altered slightly from their ground positions as a result of using Transverse Mercator Projection to account for the curvature of the earth. The formula for the scale factor is

Scale Factor=Grid Distance/Measured Distance (at MSL)

For example take these two coordinates Read More