A Baseline Deformation Detection Method Based on Integrity Monitoring

Abstract

The invention belongs to the technical field of satellite precise navigation and positioning, and particularly relates to an integrity monitoring based baseline deformation detection method capable of improving the monitoring reliability of satellite navigation and positioning for baseline deformation. The integrity monitoring based baseline deformation detection method comprises the steps of 1, detecting baseline deformation according to integrity monitoring, analyzing multiple types of errors, and acquiring an optimal estimated value of a baseline solution by combining multi-reference consistency detection and a total least square theory through introducing a multi-reference receiver; 2, introducing an adaptive attenuation factor into a positioning domain according to the characteristic that reference receiver faults and baseline deformation are major integrity risk sources, and designing a Kalman filtering based multi-reference consistency detection algorithm and the like. According to the detection for baseline deformation according to integrity monitoring, the multi-reference receiver is introduced, the optimal estimated value of the baseline solution is acquired through combining integrity monitoring for the deformation with the multi-reference consistency detection and the total least square theory, and integrity monitoring based baseline deformation detection is realized.

Description

technical field [0001] The invention belongs to the technical field of satellite precision navigation and positioning, and in particular relates to a baseline deformation detection method based on integrity monitoring that improves the reliability of baseline deformation monitoring by satellite navigation and positioning. Background technique [0002] Baseline deformation integrity monitoring is one of the key technologies for differential carrier phase technology to achieve high precision and high reliability. When the external navigation environment is relatively harsh, the established system model is prone to disturbance or even distortion, which affects the accuracy and reliability of differential positioning. Therefore, baseline deformation integrity monitoring is particularly necessary. Due to the actual application in the field of non-ideal rigid bodies such as ships, under the action of wind waves, external forces and external moments at sea, a certain degree of dist...

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Problems solved by technology

When the external navigation environment is relatively harsh, the established system model is prone to disturbance or even distortion, which affects the accuracy and reliability of differential positioning. Therefore, baseline deformation integrity monitoring is particularly necessary

Due to the actual application in the field of non-ideal rigid bodies such as ships, under the action of wind waves, external forces and external moments at sea, a certain degree of distortion will occur, so the baseline length cannot be simply regarded as a constant, otherwise it will lead to ambiguity in the entire circumference Therefore, the detection efficiency of the baseline deformation has also become one of the key factors limiting the navigation performance requirements

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