Compressed sampling signal detection method based on modulated wideband converter
A technology that compresses sampling and modulates broadband. It is used in transmission monitoring, electrical components, transmission systems, etc., and can solve problems such as system burden.
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[0042] The present invention will be further described below in conjunction with accompanying drawing:
[0043] According to the compressed sampling theory, the present invention utilizes the distribution of the eigenvalues of the sampled data covariance matrix to detect whether the signal exists or not. Now the bandwidth of broadband systems such as passive radar, electronic reconnaissance, etc. is getting larger and larger, and the traditional signal detection method based on it needs a lot of sampling points, but the present invention uses a modulated wideband converter (MWC) structure for data sampling, and obtains the sampling points Data covariance matrix and eigenvalue decomposition; according to the linear distribution characteristics of Gaussian white noise covariance matrix eigenvalues, use the correlation coefficient of eigenvalues to construct the judgment criterion of signal detection. The simulation results show that the structure and method of the present in...
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