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:
Nov. 17, 2020
Filed:
Dec. 12, 2019
The Aerospace Corporation, El Segundo, CA (US);
Robert B. Dybdal, Palos Verdes Estates, CA (US);
The Aerospace Corporation, El Segundo, CA (US);
Abstract
Satellite navigation receivers are provided herein. In certain embodiments, a satellite navigation receiver correlates a received RF navigational signal from a satellite with a replica code generated by the receiver. Additionally, errors due to multipath are mitigated by identifying the location of the peak values of the correlation function obtained when the replica code is aligned with the received RF navigational signal. Thus, the peak correlation value is detected by sweeping the user replica code in delay in place of a closed loop early/late discriminator. Moreover, multiple copies of the receiver generated replica codes with different time offsets can be used to perform the acquisition in parallel. This advantageously reduces the amount of acquisition time to align the replica code and provides averaging to improve the accuracy in detecting the delay location of the peak correlation value.