Proceedings ArticleDOI
Robust and precise position determination for vehicles using GPS carrier phase measurements
Eunsung Lee,Young Min Yoon,Moon Beom Heo,Ki Wook Nam +3 more
- pp 2119-2122
Reads0
Chats0
TLDR
It is shown that IMHWSPRT is robust with the system model faults and is possible to reduce the effect of the faults by using the null matrix of the measurement model matrix.Abstract:
An algorithm for resolving the GPS integer ambiguity is introduced. This algorithm is called the improved multiple-hypothesis Wald sequential probability ratio test (IMHWSPRT) and is based on a log formulation of the multiple-hypothesis Wald sequential probability ratio test (MHWSPRT). In this method the dynamic information is used as constraint. It speeds up the resolution convergence time of the integer ambiguity of GPS carrier phase measurements. It is known that the improvement of convergence speed of the MHWSPRT is due to the increase the probability ratio with the use of the dynamic information constraint. The dynamic information make the state error covariance small, it helps to speed up the resolution convergence time. But this method has weakness when the system model has faults. It is possible to reduce the effect of the faults by using the null matrix of the measurement model matrix. It is shown that IMHWSPRT is robust with the system model faults. The performance of IMHWSPRT is demonstrated using numerical simulations.read more
References
More filters
Journal ArticleDOI
A generalized Shiryayev sequential probability ratio test for change detection and isolation
D.P. Malladi,Jason L. Speyer +1 more
TL;DR: It is shown that for a certain criterion of optimality, this generalized Shiryayev SPRT detects and isolates a change in hypothesis in the conditionally independent measurement sequence in minimum time, unlike the Wald SPRT, which assumes the entire measurement sequence to correspond to a single hypothesis.
Book ChapterDOI
GPS Carrier Phase Ambiguity Fixing Concepts
TL;DR: Once the integer ambiguities are successfully fixed, the carrier phase measurements will start to act as if they were high-precision pseudorange measurements, thus allowing for a baseline solution with a comparable high precision.
Journal ArticleDOI
Hypothesis Testing for Resolving Integer Ambiguity in GPS
TL;DR: In this article, the multiple-hypothesis Wald sequential probability ratio test (SPRT) was proposed to detect cycle slip by finding the conditional probability that each set of integer biases under consideration is the true bias condition.
A Methodology for Reducing the Admissible Hypotheses for GPS Integer Ambiguity Resolution
TL;DR: In this paper, an efficient method for obtaining the admissible integerambiguity hypotheses within a probabilistic volume is combined with an integer hypothesis testing method to seek reducing the convergence time with high probability to the GPS carrier phase integers.