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.:
Date of Patent:
Jan. 05, 2021
Filed:
Dec. 05, 2018
Comnav Technology Ltd., Shanghai, CN;
Min Xu, Shanghai, CN;
ComNav Technology Ltd., Shanghai, CN;
Abstract
The present invention relates to a method for acquiring satellite signals. The method utilizes the predictability of the first two words of each sub-frame of the navigation message, by controlling the acquisition time of the intermediate frequency data and the PN code, acquiring corresponding intermediate frequency data and PN code from the acquisition time, processing the intermediate frequency data and the PN code to determine whether the satellite signal is acquired, during the acquisition processing and determination process, the navigation message peeling operation is performed using the predictability of the first two words of each sub-frame of the satellite navigation message and PN code, in this way, extending the time of coherent integration is achieved, and thereby improves the acquisition sensitivity.