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Satellite receiver of gbas test equipment and method and system for generating pseudorange thereof

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., to achieve the effect of improving ability and improving pseudo-range measurement accuracy

Active Publication Date: 2021-12-14
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 method and system for generating pseudorange thereof
  • Satellite receiver of gbas test equipment and method and system for generating pseudorange thereof
  • Satellite receiver of gbas test equipment and method and system for generating pseudorange thereof

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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 present invention provides a satellite receiver of GBAS test equipment and a pseudorange generation method and system thereof, the method comprising extracting a transmission signal on a carrier for a satellite space signal according to an estimated value of a current carrier parameter, and obtaining a demodulated satellite digital signal; According to the current delay estimation value of the local ranging code locally generated by the satellite receiver and the frequency offset of the sampling frequency of the local ranging code, the demodulated satellite digital signal is subjected to interpolation filtering processing; according to the preset correlation accumulation The processing method is to perform correlation processing on the interpolated and filtered satellite digital signal and the local ranging code to generate relevant data points; update the estimated value of the carrier parameter according to the relevant data point, and update the estimated delay value of the local ranging code, so as to The updated delay estimates of the local ranging codes generate pseudorange observations for the satellites. The invention can improve the accuracy of the pseudo-range measurement performed by the satellite receiver of the GBAS test equipment.

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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Patent Type & Authority Patents(China)
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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