Invention Grant
- Patent Title: Systems and methods for global navigation satellite system signal tracking
- Patent Title (中): 全球导航卫星系统信号跟踪系统和方法
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Application No.: US14520600Application Date: 2014-10-22
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Publication No.: US09100107B1Publication Date: 2015-08-04
- Inventor: Ondrej Kutik , Martin Orejas , Jussi Raasakka
- Applicant: Honeywell International Inc.
- Applicant Address: US NJ Morristown
- Assignee: Honeywell International Inc.
- Current Assignee: Honeywell International Inc.
- Current Assignee Address: US NJ Morristown
- Agency: Fogg & Powers LLC
- Main IPC: H04B1/00
- IPC: H04B1/00 ; H04B1/7085 ; H04B1/709 ; H04B1/7087

Abstract:
Systems and methods for satellite signal tracking are provided. In one embodiment, a GNSS tracking system comprises: a carrier demodulator that receives a navigation signal including pilot and data signal components; a correlator block that implements early, prompt and late correlators, generates prompt values from the pilot signal, and generates early and late values from the data signal; a carrier tracking loop that generates a reference signal using the prompt values, and outputs the reference signal to the carrier demodulator; a code tracking loop that outputs a pilot signal local replica to the prompt correlator and a data signal local replica to the early and late correlators, wherein a chip rate for the local replicas is adjusted by the code tracking loop as a function of the early and late values; and a symbol demodulator that extracts navigation data from the data signal component using the early and late values.
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