For more than 20 years the International GNSS Service (IGS) has provided access to a large number of GNSS reference stations and high quality GNSS products to anyone, free of charge. To continue to support their mission of providing quality GNSS data…

  • GNSS , Precise Point Positioning

DOP stands for Dilution of precision. Basically, DOP is a measure of the effect of the satellite geometry on the error of the position computed by your GPS receiver. A simple example of DOP for a two-dimensional case is shown below: This example is …

  • Dilution of precision , GNSS

In Part 1 we looked at how to download, install and process data using RTKLib in standalone mode. Although standalone mode is good for 2-5 meter accuracy the real power of RTKLib lies in the Prceise Point Positioning (PPP) and RTK processing modes. T…

  • GPS , Post Processing , RTKLib

This is my first post regarding geospatial technology. This will be one of the main subjects of the blog as I hope it will be a resource for people trying to learn more about the field. RTKLib is an exciting project that brings the possibility of lo…

  • tutorial , RTKLib , gps , data processing

I have never been a good speller. So when I started using the Ghost blogging platform one of the largest features missing (at least in my opinion) was a spell checker. Luckily, there is now a simple solution, at least for Chrome, thanks to Ghost user…

  • Ghost blog

My main site is now published and available at www.latitude51.ca. As I have mentioned before, I plan to host some projects that I have worked on in the past, and some projets that I have been working on in my spare time. Also I will add a list of res…

  • web development