Pseudo-satellite (Pseudo-Satellite or Pseudolite)

For structural complexity and cost considerations, the general pseudo-satellite transmitters designed for single frequency. The design concept and functions of the different pseudo-There are many types of satellites. One of the more common are simple for pseudo-satellite (SimplePseudolite), pulsed pseudolite (PulsedPseudolite) and pseudo-synchronous satellite (Synchrolite) and so on.

GPS pseudo-satellites with a variety of patterns composed of positioning and navigation systems, from the principle of speaking, pseudo-GPS satellites can substitute for independent positioning satellites. Pseudo-satellite is characterized by a significant elevation of its very low, and signals through the ionosphere without. Through the use of this low elevation satellites, GPS and pseudo-satellite combination can effectively improve the geometric structure and improve vertical accuracy. In some special occasions, or even completely replace the pseudo-satellite air GPS, and a separate location. The basic principle of pseudo-satellite positioning using GPS relative positioning is still in the "double difference" method, depending on the reliability and accuracy in addition to hardware, but also with the pseudo-satellite geometry configurations are closely related.