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High dynamic state multi- mode satellite navigation signal source analogue method and its device

A technology of satellite navigation signal and simulation method, which is applied in the field of high dynamic multi-mode satellite navigation signal source simulation and its device, can solve the problems of import restrictions, expensive satellite signal simulator, etc., to improve interpolation accuracy and improve module reuse capacity, the effect of saving computing resources

Inactive Publication Date: 2008-09-10
ZHEJIANG UNIV
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Problems solved by technology

At present, domestic research in this area is still very little, and the mature satellite signal simulators abroad are very expensive, and due to political and military reasons, imports are greatly restricted

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  • High dynamic state multi- mode satellite navigation signal source analogue method and its device
  • High dynamic state multi- mode satellite navigation signal source analogue method and its device
  • High dynamic state multi- mode satellite navigation signal source analogue method and its device

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Embodiment Construction

[0041] The present invention realizes the device of the high dynamic satellite navigation signal source simulator, under the action of the control module, the rising edge time of each control clock calculates the satellite parameter state at the current moment, loads it into the satellite signal generation module, and regularly receives the navigation Receiver positioning data processing. In the embodiment, the control clock is 1 ms, and the interval for receiving positioning data from the navigation receiver is 20 ms. Considering the scale of the actual system, the maximum number of satellites simulated by the simulator is 20. If the current visible satellite exceeds 20, select the satellite with a larger elevation angle for simulation.

[0042] The high dynamic multi-mode satellite navigation signal source simulation device includes the following steps:

[0043] 1) The control module reads the user's operating parameters for the simulator, and the operating parameters incl...

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Abstract

The invention discloses a simulation method for high dynamic multi-mode satellite navigation signal source and a device thereof, wherein, the high dynamic multi-modal satellite navigation signal source can simulate satellite signals of the following three systems: Global Position Satellite system, global navigation satellite system and second-generation Beidou satellite navigation system in space, and the satellite signals are received by a dynamic navigation receiver; the signal resource can simulate the moving state of a user receiver, imitate the error of satellite signals caused in the course of transmission and produce three-mode satellite signals in real time. In the embodiment, the device consists of a user interface module, a control module, a satellite parameter calculation module, a satellite signal producing module, an output device and a data receiving and analysis module. The device simulates simultaneously three-mode satellite signals to accelerate the research of multi-mode navigation receiver. By using an inner fumitoshi interpolation method, the device saves calculation resources and improves interpolation accuracy. By using a parametric design, the device can improve the reusable ability of modules and aim at different satellite navigation systems to implement convenient transformation.

Description

technical field [0001] The invention relates to a high dynamic multi-mode satellite navigation signal source simulation method and a device thereof. Background technique [0002] Satellite navigation and positioning technology has been widely used in aerospace, aviation, remote sensing, communication, surveying and mapping and other fields. With the broadening of application fields, the accuracy and reliability requirements of navigation and positioning technology are also gradually increasing. The original single-mode satellite navigation receiving technology, because of the limited number of visible satellites, the availability of positioning and the performance of satellite integrity monitoring are difficult to improve; In the multiplexing method, each satellite uses the same carrier frequency, and it cannot work well in the case of strong interference signals; the global navigation satellite system (GLONASS) system has a strong ability to resist interference, but becaus...

Claims

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Application Information

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IPC IPC(8): G01S5/02G01S1/02G01S19/38
Inventor 张浩赵民建王悦王勇松侯维玮赵辉李旻周侨
Owner ZHEJIANG UNIV
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