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Satellite receiver of GBAS test equipment and pseudo-range generation method and system of satellite receiver

A technology of satellite receiver and test equipment, which is applied in the field of civil aviation control, can solve the problems of impossibility, decrease of ranging code tracking accuracy, and increase of signal acquisition complexity, etc., and achieve the effect of improving pseudo-range measurement accuracy and improving ability

Active Publication Date: 2020-05-22
THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
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AI Technical Summary

Problems solved by technology

Changing the frequency of receiving the local spreading code to achieve pseudo-code frequency offset compensation while searching the carrier frequency will lead to a significant increase in the complexity of signal acquisition, or even impossible
If the method of increasing the noise bandwidth of the tracking loop of the ranging code is adopted, the tracking accuracy of the ranging code will decrease

Method used

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  • Satellite receiver of GBAS test equipment and pseudo-range generation method and system of satellite receiver

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Embodiment Construction

[0026] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] It should be noted that, in the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other; and, based on the embodiments in the present disclosure, those of ordinary skill in the art obtained without creative work All other embodiments belong to the protection scope of the present disclosure.

[0028] It is noted that the following describes various aspects of the embodiments that are within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and / or function described herein is illustrative only. Based on the present disclosure one skilled in the art should appreciate that an aspect described herein may be implemented independently of any other aspects and that two or more of t...

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Abstract

The invention provides a satellite receiver of GBAS test equipment and a pseudo-range generation method and system of the satellite receiver. The method comprises the steps: extracting a transmissionsignal on a carrier from a satellite space signal according to a current carrier parameter estimation value, and obtaining a demodulated satellite digital signal; performing interpolation filtering processing on the demodulated satellite digital signal according to a current delay estimation value of a local ranging code locally generated by the satellite receiver and the frequency offset of the sampling frequency of the local ranging code; according to a preset correlation accumulation processing method, carrying out correlation processing on the satellite digital signal after interpolation filtering processing and the local ranging code to generate a correlation data point; and updating a carrier parameter estimated value according to the related data points, and updating a delay estimated value of the local ranging code, so as to generate a pseudo-range observed quantity of the satellite according to the updated delay estimated value of the local ranging code. According to the invention, the precision of pseudo-range measurement of the satellite receiver of the GBAS test equipment can be improved.

Description

technical field [0001] The invention relates to the field of civil aviation control, in particular to a satellite receiver of GBAS test equipment and a pseudorange generation method and system thereof. Background technique [0002] The transition of the air traffic management system from the existing ground-based navigation system to the satellite-based navigation system has become a future development trend. The satellite navigation system can provide global, all-weather, continuous and real-time navigation, and has the ability to become the main navigation system supporting civil aviation. ICAO has proposed the concept of Ground Based Augmentation System (GBAS). GBAS is a satellite navigation landing system under development. On the basis of improving the accuracy of satellite navigation through differential positioning, it adds a series of integrity monitoring algorithms to improve system integrity, availability and continuity indicators, so that the airport covers the a...

Claims

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Application Information

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IPC IPC(8): G01S19/29G01S19/30G01S19/37G01S19/23
CPCG01S19/29G01S19/30G01S19/37G01S19/23
Inventor 叶家全刘靖梁飞杨萍李清栋杨正波李鑫
Owner THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
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