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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10298338 B1

PDFFull Text
Expired
Date of Patent:
May. 21, 2019

Filed:

Oct. 16, 2014

Method for evaluating quality of radio frequency signals for stellite navigation system

Applicant:

Huazhong University of Science and Technology, Wuhan, CN;

Inventors:

Zuping Tang, Wuhan, CN;

Jiaolong Wei, Wuhan, CN;

Xiaoqing Zhang, Wuhan, CN;

Changjian Liu, Wuhan, CN;

Assignee:

HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, CN;

Attorneys:

Matthias Scholl P.C.

Matthias Scholl

Primary Examiner:

Calvin Cheung

Int. Cl.
CPC ...
H04B 17/309 (2015.01); G01C 21/26 (2006.01); G01S 19/42 (2010.01); G01S 19/02 (2010.01); G01S 19/39 (2010.01); G01S 19/30 (2010.01);
U.S. Cl.
CPC ...
H04B 17/309 (2015.01); G01C 21/26 (2013.01); G01S 19/02 (2013.01); G01S 19/39 (2013.01); G01S 19/42 (2013.01); B60W 2550/402 (2013.01); G01S 19/30 (2013.01);
Abstract

A method for evaluating the quality of a radio frequency signal for a satellite navigation system, the method comprising: sampling the payload radio frequency signal of a satellite to obtain an intermediate frequency signal, and filtering the signal; downconverting the filtered intermediate signal to obtain the corresponding actual baseband signal; generating the signal components of the ideal baseband signal branches on the basis of the obtained actual baseband signal and the signal system thereof; reproducing the ideal baseband signal, which is used to evaluating the actual baseband signal; establishing a correlation function between the actual baseband signal to be evaluated and the ideal baseband signal, and obtaining through corresponding calculations a series of quality evaluation indexes such as spurious transmission in the band and related loss, thereby enabling the evaluation of the quality of the radio frequency signal. The present invention clarifies the relation between signal quality indexes and the capturing, tracking, and demodulation performance of a signal, and can clearly and regularly evaluate the effect of the signal quality on navigation performance.

Find Patent Forward Citations

Tang, Zuping. (2019). Method for evaluating quality of radio frequency signals for stellite navigation system (U.S. Patent No. 10298338). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10298338

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