A high-precision acquisition method for satellite signals
A satellite signal, high-precision technology, applied in the field of signal processing, can solve the problems of large missed capture probability, unsuccessful traction, tracking failure, etc., to achieve the effect of accurate sampling points and improve the success rate of capture and tracking.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0102] In this embodiment, GPS satellite data is used, data power: -146dBm, sampling rate: 16.367667MHz, intermediate frequency: 4.123968MHz. The data length used for capture is 800ms. Compared with the difference between the original method and the high-precision method, due to the difference in the initial conditions after capture (code phase, Doppler), the stability after entering the tracking (whether it is stable, or the length of time it takes to stabilize) The difference, from which to judge the pros and cons of high precision. Under the power of -146dBm, the tracking of 1ms cannot keep up, and the long integral tracking mode of 20ms must be adopted. In the 20ms long integration tracking mode, both the initial tracking sampling point (depending on the captured code phase) and the initial Doppler frequency will affect whether the tracking is stable.
[0103] Using this method to capture, two 3X3 arrays are obtained as shown in Tables 5 and 6:
[0104] Table 5 Odd cumul...
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