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System and method for synchronously processing multiple paths of signals

A multi-channel signal, synchronous processing technology, applied in the field of digital signal and radio direction finding, can solve the problem of unable to realize multi-channel carrier signal synchronous frequency conversion, unable to guarantee multi-channel carrier signal source synchronous acquisition, mobile phone phase difference positioning, etc.

Active Publication Date: 2014-02-05
MIANYANG WEIBO ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a multi-channel signal synchronous processing system and method, which solves the problem that the FPGA array processing board in the prior art cannot guarantee the synchronous acquisition of the multi-channel carrier signal source and cannot realize the multi-channel carrier signal in digital The technical problems of down-synchronous frequency conversion have achieved the purpose of phase difference positioning for mobile phones

Method used

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  • System and method for synchronously processing multiple paths of signals
  • System and method for synchronously processing multiple paths of signals
  • System and method for synchronously processing multiple paths of signals

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Embodiment 1

[0039] In order to realize the synchronous acquisition of multi-channel carrier signals, and digitally convert the multi-channel carrier signals synchronously, so as to achieve the phase difference positioning of mobile phones, this embodiment discloses the following content, figure 1 It is a block diagram of a multi-channel signal synchronous processing system disclosed in an embodiment of the present invention, refer to figure 1 As shown, the multi-channel signal synchronous processing system applied in the mobile phone phase difference positioning system includes: synchronous clock module 101, FPGA module 102, DSP processing module 103, AD module 104, external digital receiver 105 and CPCI interface 106;

[0040] Synchronous clock module 101 is used for outputting the clock signal of multi-channel homologous source, and the clock signal of multi-channel homologous source is distributed to FPGA module 102 and AD module 104 respectively;

[0041] Specifically, the synchronous...

Embodiment 2

[0062] On the basis of Embodiment 1, the embodiment of the present application also provides a multi-channel signal synchronization processing method, such as Figure 5 As shown in FIG. 2 , it is a schematic flowchart of a method for synchronously processing multi-channel signals provided by the embodiment of the present application.

[0063] This method is applied to mobile phone phase difference positioning, including:

[0064] Step S1: Outputting and distributing multiple channels of homologous clock signals.

[0065] The multiple homologous signals are specifically 6 homologous signals, which are output and distributed as synchronous signals to indicate synchronous acquisition and processing of carrier signals.

[0066] Step S2: converting the received multiple carrier signals into multiple intermediate frequency signals;

[0067] Specifically, the received 8-way carrier signals are converted into 8-way intermediate frequency signals.

[0068] Step S3: Synchronously sam...

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Abstract

The invention discloses a system and method for synchronously processing multiple paths of signals. The system is applied to a mobile phone phase position difference positioning system, multiple paths of synchronous clock signals output by a synchronous clock module serve as same-source signals and are distributed to an AD module and an FPGA module, and therefore the AD module conducts synchronous sampling on multiple paths of intermediate frequency signals which are formed by converting multiple paths of carrier signals received through an external receiver, and the FPGA module conducts synchronous digital down conversion processing on the multiple paths of intermediate frequency signals, a DSP processing module encodes data undergoing synchronous digital down conversion processing and adding synchronization timestamps to the data, then, a CPCI interface transmits the multiple paths of synchronization data to an upper computer outside the system, and the upper computer extracts required data through the synchronization timestamps of the multiple paths of data and conducts phase different analysis to obtain the position coordinate of a mobile phone. According to the system, synchronous sampling of the multiple paths of carrier signals is ensured, synchronous digital down conversion processing of the multiple paths of carrier signals is achieved, and therefore phase difference positioning of the mobile phone is achieved.

Description

technical field [0001] The present invention relates to the technical field of digital signal and radio direction finding, and more specifically relates to a multi-channel signal synchronous processing system and method. Background technique [0002] The origin of radiolocation technology can be traced back to the beginning of the last century. The military needs of World War II and the digital cellular mobile communication system promoted in the late 1980s promoted the development of this technology in the military and civilian fields respectively. The mobile phone phase difference positioning system is a receiver antenna array that detects the amplitude and phase characteristics of a specific mode of multi-path carrier signal generated by a mobile phone terminal, extracts the characteristic phase difference of multi-path interference, and then uses the phase difference of the multi-path carrier signal to locate The method for mobile phone positioning. In the system, since ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7087
Inventor 宋方伟陈航梅勇陈刚黄锐杨浩澜
Owner MIANYANG WEIBO ELECTRONICS
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