Welcome to Lana Panasyuk website

During sessions of our field experiment at least 14 of the GPS satellites were tracked at each station using Trimble 4000 SST or Trimble 4000 SSE receivers which recorded carrier phase data at 30-sec intervals. It is a lot of data to process! But we know: the more, the better. During the observation planning and the data processing, it is usuful to know which satellites, when and where will pass above the antenna. You'd love to know a "sky resolution" that tells you how to mount an antenna to avoid any obstructing structures (mountings/buildings/trees/cows) which might cause additional noise to the data (reflected/refracted signals).

I have written a matlab code that creates a "Sky Map" - nice name :) or "Satellite Visibility Chart" for a given point in space (latitude=45 and longitude=75 degrees) and a time-span (July 15, 1993).

Sky Visibility Map

The map is what you'd see if you stand at this location and this time and look up in the sky through magic glass. You would "see" the satellites passing the sky above and leaving the tracks behind. Similar as on the plot... Each line ends with a number representing the satellite number. The color corresponds to the time of the day: dark is for nights, blue - mornings, yellow - mid day, and red is for evening. The colorbars below show what satellites are visible at each moment simulteneously.

This kind of satellite map is easy to build for any place and any time once you have the public-available GPS-satellite data.