Gps Satellite Orbital Parameters

It is the orbit used by the global positioning system gps satellites.

Gps satellite orbital parameters.

Each satellite transmits a unique signal and orbital parameters that allow gps devices to decode and compute the precise location of the satellite. This 24 slot arrangement ensures users can view at least four satellites from virtually any point on the planet. It describes the orbital position of the satellite at any specific time. The satellites in the gps constellation are arranged into six equally spaced orbital planes surrounding the earth.

A satellite at this height takes 12 hours to complete an orbit. Now we have found the first three parameters describing the orbit and the satellite position in it. Global navigation satellite systems gnss are part of the most complex modern space systems humankind has created and therefore their orbits orbital parameters and their two main terrestrial mappings are firstly described. Each plane contains four slots occupied by baseline satellites.

Each satellite in the gps constellation orbits at an altitude of about 20 000 km from the ground and has an orbital speed of about 14 000 km hour the orbital period is roughly 12 hours contrary to popular belief gps satellites are not in geosynchronous or geostationary orbits. Gps codes and services. The gps satellites are not in a geostationary orbit but rise and set two times per day. In 24 hours the satellite crosses over the same two spots on the equator every day.

When the satellite is at perigee the angle is and when it is at apogee the angle is. This orbit is consistent and highly predictable. At any time the gps receivers will get the signals from at least four satellites. Orbital elements are the parameters required to uniquely identify a specific orbit in celestial mechanics these elements are considered in two body systems using a kepler orbit there are many different ways to mathematically describe the same orbit but certain schemes each consisting of a set of six parameters are commonly used in astronomy and orbital mechanics.

As the satellite moves the earth rotates underneath it. Hence all satellites revolve around the earth two times on every day. Essentially the gps receiver measures the distance to each satellite by the amount of time it takes to. The angle is most often called the true anomaly and is the third orbital parameter.

The orbital period of each satellite is approximately equal to twelve hours. Each gps satellite transmits two signals l 1 and l 2 are of different frequencies.