Signal processing system and method for a navigation system
A signal processing and signal processor technology, applied in the field of navigation systems, can solve problems such as inability to adjust, reduce system efficiency and flexibility, and achieve high efficiency and stability
Active Publication Date: 2010-07-28
凹凸电子(成都)有限公司
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Problems solved by technology
Similarly, during the operation of the satellite navigation system 100, the satellites tracked by each tracking channel are also fixed and cannot be adjusted.
The above problems will reduce the efficiency and flexibility of the system
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[0023] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to make the features and advantages of the present invention more obvious.
[0024] A detailed description will be given below of embodiments of the present invention. While the invention will be described in conjunction with examples, it will be understood that it is not intended to limit the invention to these examples. On the contrary, the invention is intended to cover various alternatives, modifications and equivalents as defined within the spirit and scope of the invention as defined by the appended claims.
[0025] Furthermore, in the following detailed description of the invention, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specif...
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The invention discloses a signal processing system and method for a navigation system. The signal processor comprises: a plurality of acquisition channels operable for capturing tracking information from a first plurality of satellite signals synchronously according to a plurality of correlations between a plurality of reference coarse acquisition (C / A) codes and said first plurality of satellite signals; and a first plurality of code generators coupled to said acquisition channels and operable for generating said reference C / A codes to said acquisition channels and further comprises a plurality of tracking channels coupled to said acquisition channels and operable for tracking corresponding satellites synchronously according to said tracking information captured from said first plurality of satellite signals. Compared with the prior technology, an independent code generator is allocated for the selected acquisition channels and the tracking channels and the acquisition channels and the tracking channels can synchronously operate. In addition, the satellite cluster allocated to the selected acquisition channels and the tracking channels is adjusted based on the current environment, thus the signal processing system has higher efficiency and stability.
Description
technical field [0001] The present invention relates to a navigation system, in particular to a signal processing unit and method for processing satellite signals in the navigation system. Background technique [0002] Typically, satellite navigation systems, such as GPS (Global Positioning System Receiver), may be used to receive and process satellite signals from multiple satellites. The baseband signal processor in the satellite navigation system can capture tracking information from effective satellite signals, and track corresponding satellites according to the obtained tracking information. figure 1 Shown is a block diagram of a satellite navigation system 100 with a conventional baseband signal processor. like figure 1 As shown, the satellite navigation system 100 includes a radio frequency front end 104 for receiving satellite signals from multiple satellites via an antenna 102 and converting the frequency of the satellite signals from radio frequency to intermedia...
Claims
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IPC IPC(8): G01S19/24G01S19/30
CPCG01S19/30
Inventor 余晓光张卫华詹姆斯·王
Owner 凹凸电子(成都)有限公司