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Satellite positioning method and system based on signal reconstruction

A technology of signal reconstruction and satellite positioning, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc., and can solve problems such as distortion of positioning results and leakage of interference signals.

Pending Publication Date: 2020-08-25
慧众行知科技(北京)有限公司 +1
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Problems solved by technology

[0005] The present invention provides a satellite positioning method and system based on signal reconstruction, which is used to solve the problem in the prior art that the interference signal of the neighboring star is strong, and the interference signal of the neighboring star overlaps with the target signal of the main star. Part of the interference signal will leak to the main star, which will eventually lead to the problem of distorted positioning results

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  • Satellite positioning method and system based on signal reconstruction
  • Satellite positioning method and system based on signal reconstruction
  • Satellite positioning method and system based on signal reconstruction

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Embodiment Construction

[0024] The technical solution of the present invention will be described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific technical features in the embodiments are only descriptions of the technical solution of the present invention, rather than limitations. , the embodiments of the present invention and specific technical features in the embodiments may be combined with each other.

[0025] Such as figure 1 Shown is a flow chart of a satellite positioning method based on signal reconstruction in an embodiment of the present invention, the method includes:

[0026] S101, obtain the original signal of the main star, and demodulate the original data of the target object in the original signal:

[0027] After the original signal of the main star is obtained, the original signal of the main star is demodulated, and the signal type, signal bandwidth and other data of t...

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Abstract

The invention discloses a satellite positioning method and system based on signal reconstruction, and the method comprises the steps: obtaining an original signal of a main satellite, and demodulatingthe original data of a target object in the original signal; reconstructing a target signal according to the original data to obtain a reconstructed target signal; and performing time-frequency difference parameter estimation operation according to the reconstructed target signal and the adjacent satellite signal to obtain a corresponding time difference and a frequency difference. Through the technical scheme provided by the invention, the target signal can be directly reconstructed, so that the required target signal can be directly reconstructed in the original signal of the main satellite, the interference of the leakage signal of the interference signal of the adjacent satellite on the positioning result is completely filtered, and the system is ensured to obtain correct time difference and frequency difference.

Description

technical field [0001] This application relates to the technical field of passive satellite positioning, in particular to a satellite positioning method and system based on signal reconstruction. Background technique [0002] At present, the passive positioning method refers to a technology in which the positioning system does not emit electromagnetic wave signals to the positioned target, but only uses the radiation information of the target radiation source to determine the position of the target. Compared with the active positioning system, the passive positioning system has the advantages of strong survivability, long range, strong ability to resist electronic interference, and wide airspace coverage. [0003] Time difference positioning, also known as hyperbolic positioning, is an important passive positioning method. The principle of this method is: using the received two satellite signals for cross-correlation calculation, the time difference and frequency difference...

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Application Information

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IPC IPC(8): G01S19/42
CPCG01S19/42
Inventor 王争儿何飞宏
Owner 慧众行知科技(北京)有限公司
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