GNSS (global navigation satellite system) signal simulator and implementing method thereof on basis of GPU (graphic processing unit)

A technology of a signal simulator and an implementation method, which is applied in the directions of instruments, satellite radio beacon positioning systems, measurement devices, etc., can solve the problems of high cost, weak flexibility and scalability, and long research and development cycle, and achieves low cost, The effect of reducing design difficulty and short development cycle

Inactive Publication Date: 2015-05-06
NANTONG HANGDA ELECTRONICS TECH
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Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the object of the present invention is to provide a GNSS signal simulator based on GPU and its implementation method, utilizing the new GNSS signal simulator architecture of computer GPU, intermediate frequency board and radio frequency board to solve At present, the simulator has the problems of high cost, long R&D cycle, weak flexibility and scalability, and meets the needs of multi-system multi-frequency point simulation, space environment simulation, integrated navigation signal simulation and new system signal simulation.

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  • GNSS (global navigation satellite system) signal simulator and implementing method thereof on basis of GPU (graphic processing unit)
  • GNSS (global navigation satellite system) signal simulator and implementing method thereof on basis of GPU (graphic processing unit)
  • GNSS (global navigation satellite system) signal simulator and implementing method thereof on basis of GPU (graphic processing unit)

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Embodiment Construction

[0024] The present invention will be further explained below in conjunction with the examples, but the methods and technical parameters involved in the examples cannot be regarded as limitations to the present invention.

[0025] Such as figure 1 As shown, the GNSS signal simulator according to the embodiment of the present invention is composed of a computer GPU, an intermediate frequency board and a radio frequency board. Its workflow is:

[0026] (1) The host computer software running on the computer completes the function of real-time generating digital intermediate frequency data according to the simulation conditions of the receiver time, location, movement mode, and spatial environment error set by the user. The GPU is responsible for the signal modulation and quantization of the digital intermediate frequency. , Using its powerful parallel large-scale data processing and computing capabilities to realize the real-time generation of high-sampling-rate digital intermediate fr...

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Abstract

The invention discloses a GNSS (global navigation satellite system) signal simulator and an implementing method thereof on the basis of GPU (graphic processing unit). The GNSS signal simulator is composed of a computer, an intermediate-frequency board card and a radio-frequency board card. The GPU of the computer generates digital intermediate-frequency data, transmits the data to the intermediate-frequency board card for digital/analog conversion, and generates GNSS navigation signals by frequency conversion and power attenuation on the radio-frequency board card. The GNSS signal simulator has the advantages of low cost, short development period, higher flexibility in supporting new navigation frequency points and signal modulation modes, no extra synchronous board card, low design difficulty, low system complexity and the like.

Description

Technical field [0001] The present invention relates to a new GNSS (Global Navigation Satellite System, Global Navigation Satellite System) signal simulator based on a computer GPU (Graphic Processing Unit, graphics processor) and an implementation method thereof. More specifically, it uses GPU to generate The digital intermediate frequency data is transmitted to the intermediate frequency board through the PXI or PXIe bus for digital / analog conversion to generate an analog intermediate frequency signal, and then the RF board is used for up-conversion and power attenuation to generate the GNSS navigation signal. Background technique [0002] The GNSS signal simulator is used to simulate the satellite navigation signals propagated through space received by the receivers at different times, different locations and different motion states. It can provide reproducible and customizable simulation scenarios. It is used for research and test reception. It is an indispensable instrument ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23
CPCG01S19/23
Inventor 不公告发明人
Owner NANTONG HANGDA ELECTRONICS TECH
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