IMPROVING POINT POSITIONING ACCURACY USING GPS CARRIER SMOOTHED PSEUDORANGE
Zhang Chengjun; Yang Li ;and Chen Jun
Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052
Abstract The principle and data preprocessing of carrier smoothed pseudorange are discussed and the method which can improve the positioning accuracy and its flow are given.With this method two computation examples are made. The results show that: 1)the accuracy can be improved efficiently by using smoothed C1 and P2 pseudorange in static data processing, the accuracy can reach 1 m if the time is long and can attain 0.5 m if the precise ephemeris is taken; 2)the accuracy can be boost hardly by using smoothed P1 and P2 pseudorange, but the accuracy can be improved from 0.6 m to 0.3 m if the time is long enough and the precise ephemeris is used; 3)most epochs can reach to the accuracy of 2 m precision in kinematic positions if the smoothed code and precise ephemeris are utilized.
Key words ：
carrier phase smoothed pseudorange
point positioning
precise ephemeris
cycle slip
accuracy
Received: 01 January 1900
Corresponding Authors:
Zhang Chengjun
Cite this article:
Zhang Chengjun,Yang Li,and Chen Jun. IMPROVING POINT POSITIONING ACCURACY USING GPS CARRIER SMOOTHED PSEUDORANGE[J]. , 2009, 29(4): 106-110.
Zhang Chengjun,Yang Li,and Chen Jun. IMPROVING POINT POSITIONING ACCURACY USING GPS CARRIER SMOOTHED PSEUDORANGE[J]. jgg, 2009, 29(4): 106-110.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2009/V29/I4/106
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