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A method and device for digitalizing radio satellite signals under mixed mode

A technology of satellite signal and mixed mode, which is applied in the field of communication, can solve the problems of simultaneous digital processing of dual-mode wireless satellite signals, etc., and achieve the effects of fast processing speed, easy implementation, and simple device structure

Inactive Publication Date: 2012-03-28
SHANGHAI BEIGA NAVIGATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the present invention is to provide a method and device for digitizing mixed-mode wireless satellite signals to solve the problem that the above-mentioned receiver cannot simultaneously digitize dual-mode wireless satellite signals

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  • A method and device for digitalizing radio satellite signals under mixed mode
  • A method and device for digitalizing radio satellite signals under mixed mode
  • A method and device for digitalizing radio satellite signals under mixed mode

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Embodiment Construction

[0047] In order to clearly illustrate the method and device of the present invention, preferred embodiments of the present invention are given below in detail with reference to the accompanying drawings.

[0048] Since the receiver will receive CAPS and GPS signals after receiving satellite signals, sometimes there may be only CAPS signals or only GPS signals. Whether it is mixed signals or only one of them, the method of the present invention can be used to digitize wireless signals. Describe the embodiment of the inventive method in detail below, the embodiment of the inventive method can refer to figure 1 ,include:

[0049] Step 101: Acquire the received wireless satellite signals;

[0050] When the receiver is receiving wireless signals, it contains multiple wireless satellite signals. With the mixed mode positioning system of CAPS system and GPS system, multiple CAPS signals and / or CPS signals can be received through the satellite antenna.

[0051] Step 102: Mix the re...

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Abstract

This invention discloses a method and a device for numeralizing radio satellite signals of mixed mode, in which, the method includes: mixing received GPS / CAPS radio satellite signals of various routes to signals of same central and sample frequency, carrying out coherent opeation of spread spectrum set to the mixed satllite signals and carrying out Fourier transformation to the result to get modes of signals, number of a satellite, phase of spread spectrum code and carrier Doppler frequency points to regulate frequency to the mixed signals by the signal mode and the carrier Doppler frequency point to down-converting frequency of the regulated satellite signals and generate related spread spectrum codes then to operate the signals and the code to de-spread the original data in the satellite signals by the maximum spread spectrum code sequence in the coherent values.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for digitizing mixed-mode wireless satellite signals. Background technique [0002] Satellite navigation and positioning systems are widely used in national defense, vehicle and weapon navigation, geographic detection and many other aspects. [0003] There are many sets of satellite positioning systems being used internationally, and the independent satellite positioning system used by China - China Area Positioning System (CAPS) and GPS satellite positioning system. The system is a satellite-based navigation and positioning system based on geosynchronous orbit communication satellites. It uses communication satellites to forward navigation message information and realizes navigation and positioning functions in China. CAPS and the GPS global positioning system of the United States are the same in the rate of the navigation message and the sequence of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37G01S19/33G01S19/30H04J13/10
Inventor 杨诗明李国通余超贾广沂
Owner SHANGHAI BEIGA NAVIGATION TECH CO LTD