Binary offset carrier signal tracking loop
A carrier tracking loop and offset carrier technology, which is applied in phase modulation carrier systems, radio wave measurement systems, satellite radio beacon positioning systems, etc. It can improve tracking stability, eliminate tracking ambiguity, and increase dynamic range.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0078] Take the tracking loop implementing BOC (15, 2.5) as an example to illustrate, the spreading code period is 2ms, and the subcarrier frequency f sc =15*1.023MHz, spreading code rate f c =2.5*1.023MHz, IF carrier frequency f IF = 46.52 MHz.
[0079] This embodiment is implemented on a hardware platform with FPGA+DSP as the core. The FPGA selects VC4VSX55 in the VIRTEX-4 series of Xilinx Company, and the DSP is a floating-point type TMS320C6713 of TI Company. The correlator module 1 is implemented in FPGA, and the phase detector unit 2 and filter module 3 are implemented in DSP.
[0080] Carrier numerically controlled oscillator 105, subcarrier numerically controlled oscillator 106, and spread spectrum code numerically controlled oscillator 107 generate local sine-cosine signals and spread spectrum code sequences with the same frequency as the intermediate frequency carrier and subcarrier. Each time the numerically controlled oscillator overflows, a recurring carrier ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com