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Space-time navigation anti-interference method based on iteration idea

An iterative and thought-based technology, applied in the space-time navigation and anti-jamming field based on iterative thinking, can solve problems such as real-time performance degradation, achieve the effect of improving real-time performance, ensuring actual application requirements, and reducing the number of iterations

Active Publication Date: 2017-01-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0060] The purpose of the present invention is to provide a space-time navigation anti-jamming method based on iterative thinking to solve the problem that the real-time performance of the existing space-time navigation anti-jamming method deteriorates sharply when the number of interferences and time taps increase. In the optimal anti-jamming weight vector process, an appropriate correction amount is added to the Gauss-Seidel iteration process to speed up the iteration speed

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  • Space-time navigation anti-interference method based on iteration idea

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Embodiment Construction

[0074] Below in conjunction with embodiment and accompanying drawing, the above-mentioned content of the present invention will be described in further detail again, but this should not be interpreted as the scope of the above-mentioned theme of the present invention being limited to following examples; Various replacements or changes made by ordinary technical knowledge and conventional means in the field shall be included in the scope of the present invention. The content that is not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

[0075] This embodiment provides a space-time navigation anti-jamming method based on iterative thinking, including the following steps:

[0076] a. Process the input signal of each array element to obtain the autocorrelation matrix R X ;

[0077] R X =E{X*X H}

[0078] b. Set the initial weight value, so that all elements in the weight vector w are 0;

[007...

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Abstract

The invention belongs to the satellite navigation communication field and provides a space-time navigation anti-interference method based on an iteration idea, and is to overcome the problem that the real-time performance of an existing space-time navigation anti-interference method gets poor dramatically under the condition that interference number and time taps increase. The method is characterized by, to begin with, calculating an autocorrelation matrix RX according to the input signal; then, calculating an error vector e; and finally, calculating an optimum navigation weight vector according to an iterative formula: w<k+1>=Cw<k>+s+mue. In the optimum anti-interference weight vector calculating process and in the Gauss-Seidel iteration process, the correction mue is added, thereby greatly improving iteration speed, effectively improving the real-time performance of space-time navigation anti-interference, and ensuring practical application requirements.

Description

technical field [0001] The invention relates to the field of satellite navigation and communication, in particular to the optimization of an anti-jamming method in a satellite navigation system, specifically a space-time navigation anti-jamming method based on an iterative idea. Background technique [0002] The global satellite navigation system uses navigation satellites to transmit navigation satellite signals, and users on the ground, ocean and space receive satellite navigation information through receivers to enjoy continuous, real-time, high-precision positioning, navigation and timing services. In recent decades, the satellite navigation system has developed rapidly and has been widely used in many fields, while producing significant social and economic benefits. The construction and development of navigation systems can promote the political, economic and cultural construction of a country to a certain extent, so all countries have invested a lot of manpower, materi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/21
Inventor 李会勇张泽恒谢菊兰刘畅许欣怡
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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