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PXIe bus based GNSS signal simulator and implementation method thereof

A technology of signal simulator and bus, which is applied in the field of satellite navigation, can solve the problems of unretrieved GNSS signal simulator system and method, etc., and achieve the effect of improved modularization, flexible integration and high efficiency

Inactive Publication Date: 2010-05-12
BEIHANG UNIV +1
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  • Abstract
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Problems solved by technology

[0004] At present, there are no reports about the GNSS signal simulator system and method based on the PXIe bus at home and abroad

Method used

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  • PXIe bus based GNSS signal simulator and implementation method thereof
  • PXIe bus based GNSS signal simulator and implementation method thereof
  • PXIe bus based GNSS signal simulator and implementation method thereof

Examples

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Embodiment Construction

[0026] Describe the present invention in detail below in conjunction with accompanying drawing, the structural representation of GNSS signal simulator described in the embodiment of the present invention is as follows figure 1 As shown, it mainly includes the following six parts: PXIe chassis, PXIe embedded controller card (or a replaceable computer connected to the PXIe chassis through an interface cable), synchronous control card, up-converter card, IF modulator card and integrated circuit breaker / power splitter.

[0027] exist figure 1Among them, the PXIe chassis is a standard chassis that meets the requirements of the PXIe specification. The number of slots in the chassis determines the maximum number of constellations and frequency points that can be generated by a single-chassis simulator. The PXIe embedded controller card is an embedded controller card equipped with Windows and suitable for the PXIe bus. It is used to run the upper computer software and control the har...

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PUM

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Abstract

The invention provides a PXIe bus based GNSS signal simulator and an implementation method thereof. The simulator constructs the whole system platform based on the PXIe bus. A hardware signal generator comprises a synchronous control card, an intermediate frequency modulator card, an up converter card and a combiner card which are inserted into a standard PXIe case in the form of boards. The system adopts the synchronous control card to generate and transmit reference clocks and reset and time base signals through an equal-length clock line, a single end and a differential star trigger line of the PXIe bus. All the boards can be controlled by upper computer software through the PXIe bus. The system of the invention has excellent flexibility, compatibility and expandability, and can support the multi-constellation and multi-frequency point satellite navigation signals for integrated navigation in the present and future signal systems.

Description

technical field [0001] The invention relates to the field of satellite navigation, in particular to a GNSS (Global Navigation Satellite System, Global Navigation Satellite System) signal simulator based on a PXIe (PXI EXPRESS, PCIeXtensions for Instrumentation) bus and an implementation method thereof. Background technique [0002] The GNSS signal simulator can simulate the satellite navigation signals broadcast by the GNSS constellation and reach the receiver through space propagation. It is used to provide user-definable and repeatable test scenarios in the laboratory environment. It is an important component of the satellite navigation system. It is an indispensable instrument and equipment for signal test and receiver test. [0003] Various types of GPS / GLONASS / Galileo / Beidou signal simulators have been developed at home and abroad. These simulators are divided into single-channel and multi-channel. The flexibility and scalability of the structure are limited by the old...

Claims

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Application Information

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IPC IPC(8): G01S19/01G01S19/20G01S19/23
Inventor 寇艳红刘洪泉张海涛蔚保国王振岭
Owner BEIHANG UNIV
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