Precise calibration of pseudolite antenna positions for indoor navigation system

摘要

The present invention measures the pseudo-satellite signal, and more particularly selected for the most efficient at least measuring points in accordance with the reference station and pseudolites disposed, and from there directed to precisely measure the position of the pseudo-satellite signal transmission antenna for indoor navigation physician to accurately calculate the position of the satellite transmitting antenna. In recent years, satellite navigation system; a study on building an indoor positioning system using a satellite as part of a doctor (Pseudolite) of how the (Global Positioning System GPS) available in the room is actively in a number of areas in the practical preparation stage. One of the factors affecting the performance of the indoor navigation system using such a doctor is a doctor satellite position measurement accuracy of the satellite signal transmission antenna. Accordingly, it is to accurately measure the position of the pseudo-satellite transmission antenna commercialize indoor positioning system using the pseudo-satellite will the core technology. In particular, the method of the present invention can advantageously because it uses a transmission signal of a pseudo-satellite, the tape measure or other geometric tool relatively accurate measurement of the phase center of the antenna can not who the conventional method using a. Through simulation results doctor calculates the satellite position measurement error, it was confirmed that can be measured to an accuracy of within 1~2cm.