How a GPS works

Any navigation solution provided by a GNSS Receiver is based on the computation of its distance to a set of satellites, by means of extracting the propagation time of the incoming signals traveling through space at the speed of light, according to the satellite and receiver local clocks.

Notice that satellites are always in motion, so previous to obtaining the navigation message, the satellite’s signal is detected and tracked. The receiver’s functional blocks that perform these tasks are the antenna, the front-end and the baseband signal processing (in charge of acquiring and tracking the signal).

http://navibees.com

Once the signal is acquired and tracked, the receiver application decodes the navigation message and estimates the user position. The Navigation Message includes:[1]

  • Ephemeris parameters, needed to compute the satellite’s coordinates.
  • Time parameters and Clock Corrections, to compute satellite clock offsets and time conversions.
  • Service Parameters with satellite health information.
  • Ionospheric parameters model needed for single frequency receivers.
  • Almanacs, that allow computing the position of all satellites but with a lower accuracy than the ephemeris.

The ephemeris and clocks parameters are usually updated every two hours, while the almanac is updated at least every six days.

The GPS Signal In Space is specified in the following documents:[2]

  • IS-GPS-200E: Interface between the space segment of the Global Positioning System and the navigation user segment of the GPS for radio frequency link 1 (L1) and link 2 (L2)
  • IS-GPS-705A: interface between the space segment of the Global Positioning System and the navigation user segment of the GPS for radio frequency link 5 (L5).
  • IS-GPS-800: interface between the space segment of the Global Positioning System and the navigation user segment of the GPS for signal L1 Civil (L1C) transmitted in the frequency band of L1.

Sing! Don’t be afraid…

Remember * when you breathe out and breath in focus on how steady and consistent your breathing can get. Don’t try to blow out fast and this doesn’t actually help your training. The element to focus in this training is being consistent.

  • Breathe in for 4 seconds, and then hiss the same breathe out for 4 seconds.
  • Breathe in for 2 seconds, and hiss out for 10.
  • Breathe in for 4 seconds, hiss out for 16.
  • Breathe in for 4 seconds and hiss out for 20.

Here if you notice you are trying to empty your lungs slowly and steadily focus on gradually increasing the pattern after few days.

Try to drink lukewarm water instead of Chilled or hot water because lukewarm water is soothing as well as loosen your vocal chords.

How to sing better

Remember while singing don’t think of the mistakes that you have made or how bad the day was, just allow yourself to make mistakes you will only grow by taking risks, and attempting to improve will surely reward you and make things work, and the only thing that should matter is not to be afraid and move ahead with confidence what’s the worse that could happen!

Its only you and your voice that should matter, how beautiful or scary you may sound, you actually learn more and pay more attention when you are happy about the little progress you do every day, gaining experience works so once you make up your mind and don’t let yourself down you are sure to find the confidence too very soon.