False satellite baseband signal maker and control method of built-in processor thereof

An embedded processor and baseband signal technology, applied in satellite radio beacon positioning system, electrical digital data processing, special data processing applications, etc.

Inactive Publication Date: 2008-04-09
SHANGHAI BEIGA NAVIGATION TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to mainly solve the problem of how to integrate the whole system core in a Field Programmable Gate Array FPGA (Field Programmable GateArray) chip; Text output and carrier output of direct ...

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  • False satellite baseband signal maker and control method of built-in processor thereof
  • False satellite baseband signal maker and control method of built-in processor thereof
  • False satellite baseband signal maker and control method of built-in processor thereof

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Embodiment Construction

[0095] Please refer to accompanying drawing 1,2,3,4 shown, the present invention is made of programmable gate array, bus, interface, antenna, logic circuit, inverter, register, memory, clock manager, delay controller, digital frequency Synthesizer, interrupt recorder and D / A converter and other components, the device includes at least:

[0096] Field programmable gate array FPGA1, serial interface 2, boundary scan interface 3, memory chip 4, 75M crystal oscillator clock input 5, 20.46M high stability clock input 6, digital-to-analog conversion 7 and intermediate frequency signal 8 modules, and integrate four independent channels The pseudolite signal channel, logic function digital circuit and embedded soft core form an embedded system on chip. The whole system core is integrated in a field programmable gate array FPGA1 chip, and the soft core and four pseudolite peripherals are combined together as A baseband signal generator; wherein:

[0097] The input terminals of a field p...

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Abstract

The invention relates to a signal transmission equipment in the electronic technical field, in particular to a baseband signal generator of pseudosateilite that adopts modern technological means and is used for satellite signal simulation and the implementation of pseudosateilite location and so on, as well as a control method of the embedded processor of the invention. The equipment comprises a field programmable gate array (FPGA) and a module of intermediate frequency signal, etc, and the baseband signal generator is combined by a soft core and a four-way pseudosateilite peripheral together. By adopting a baseband signal control software of the pseudosateilite designed by the equipment, the method responds to control commands in PC. The method mainly solves the related technical problems of how to integrate the whole system core into a chip of field programmable gate array. The invention has the advantages that the format and content of output signal of the equipment are consistent with that of GPS signal, and according to the defined communication protocol, the method can resolve the command parameters from the data frame and execute the commands, the method improves the reliability and controllability, and has the advantages of low cost and flexible control, etc.

Description

technical field [0001] The present invention relates to the signal sending equipment of electronic technical field, especially a kind of using modern scientific and technological means, is used for generating and controlling the intermediate frequency signal of the pseudolite signal similar to the GPS (Global Positioning System) satellite signal format of the global satellite positioning system, used for A device for simulating satellite signals and realizing multiple applications such as pseudolite positioning and a control method for an embedded processor thereof. Background technique [0002] As the name suggests, a pseudolite is a satellite simulation device. Its main function is to simulate a satellite, here it is to simulate a GPS satellite, and transmit a satellite navigation signal that is exactly the same as the GPS signal format. The emergence of pseudolites is not too late. Before the construction of the GPS system in the United States was completed, pseudolites w...

Claims

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Application Information

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IPC IPC(8): G01S1/02G01S1/00G01S5/02G01S5/14G06F17/00H04Q7/38G01S19/01
Inventor 翟传润战兴群胡华宋嫡儿李实孟祥夫刘峻宁张婧
Owner SHANGHAI BEIGA NAVIGATION TECH CO LTD
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