High-Accuracy Differential Positioning for Satellite-Based Systems Without Using Code-Phase Measurements1
High-Accuracy Differential Positioning for Satellite-Based Systems Without Using Code-Phase Measurements1
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DOI：
10.1002/j.2161-4296.1995.tb01909.x
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发表时间：
1995-12
影响因子：
--
通讯作者：
F. Graas;Shane-Woei Lee
中科院分区：
文献类型：
--
作者：
F. Graas;Shane-Woei Lee
A novel, high-accuracy differential positioning technique for satellite-based systems is presented. The technique does not require the use of code-phase measurements. Integrated Doppler double difference (ID^3) processing is used to converge the three-dimensional position of a a dynamic user to within 1 m of the true position after 1-2 min. Key elements of the ID^3 method are a very accurate propagation of the user position in combination with an iterative double difference processing scheme. The feasibility of the ID^3 processing technique is demonstrated using both a computer simulation and actual flight test data. The technique requires measurements from seven or more satellites to achieve the short initialization time for dynamic users. This requirement can be satisfied with high availability by using all satellites from which the carrier phase can be tracked, in combination with a small reference station network that performs orbit determination for all satellites used in the position solution. Some applications and benefits of the ID^3 processing technique are discussed as well.
