Realization Method of Receiver Deep Combination Based on Beidou Second Generation Satellite Navigation System

Abstract

The utility model discloses a receiving machine deep combination implementation method based on the Big Dipper second-generation satellite navigation system. Assisted by an inertial navigation system, accurate speed assistance is provided for a receiving machine carrier wave tracking loop, a carrier wave tracking loop closed loop is utilized to provide assistance for a code tracking loop to eliminate most dynamic factors of carriers in the carrier wave tracking loop and the code tracking loop so as to reduce the orders of the carrier wave tracking loop and the code tracking loop, so that the noise bandwidth is decreased, the situation that the tight combination technology cannot improve the robustness and the measured value quality of a satellite signal tracked by a receiving machine is overcome; after the receiving machine loop is assisted, the filter bandwidth can be narrowed, and the technical effects that the high-dynamic adaptive capacity, the tracking sensitivity and the anti-interference ability of the receiving machine are improved are realized.

Description

technical field [0001] The invention relates to the field of satellite and inertial integrated navigation, in particular to a receiver deep combination realization method based on the Beidou second-generation satellite navigation system. Background technique [0002] The existing combination methods of satellite navigation receiver and inertial navigation integrated navigation mainly include loose combination, tight combination and deep combination. The satellite navigation receivers on the market mainly adopt loose combination or tight combination. Currently, many schools and scientific research institutes are researching deep combination receivers, but most of them are still in the stage of testing and verification, and no similar deep combination satellite navigation receivers developed in China have been found to be used in products. [0003] The implementation of the tight combination receiver is: the inertial navigation output positioning, speed measurement results to...

AI Technical Summary

Problems solved by technology

[0007] The utility model provides a receiver deep combination implementation method based on the Beidou second-generation satellite navigation system, which solves the problem that the existing satellite navigation receiver and inertial navigation combined navigation method cannot improve the robustness of the receiver tracking satellite signals and improve reception. The quality of the measured value of the receiver, as well as the technical problems of high dynamic adaptability, tracking sensitivity and poor measurement accuracy of the receiver, have overcome the tight combination technology that cannot improve the robustness of the receiver tracking satellite signal and the quality of the measured value, After the receiver loop is assisted, the filter bandwidth can be narrowed, and the technical effect of improving the receiver's high dynamic adaptability, tracking sensitivity and anti-interference performance

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