Microwave photonic radar detection method and device based on multiple optical reference signals
A reference signal and microwave photon technology, applied in the field of microwave photon radar detection, can solve the problems of reducing signal bandwidth, increasing system cost, and exacerbating envelope dislocation, etc., to achieve the effect of increasing effective bandwidth, expanding detection range, and high distance resolution
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[0034] The inventive idea of the present invention is to improve the existing de-skew receiving microwave photonic radar, use the parallel processing freedom of the optical domain to generate multiple reference signals, and effectively connect multiple low-speed digital receiving modules in parallel to achieve low cost , Broadband microwave detection with high performance and large detection range.
[0035] Specifically, the microwave photonic radar detection method based on multiple optical reference signals modulates the low-frequency electrical signal into an optical carrier group composed of multiple optical carriers with different wavelengths to generate multiple optical carrier electrical signals. Modulate the optical signal, divide the modulated optical signal into two channels, and use one of them to generate a broadband radio frequency detection signal; after assigning a different delay to each optical carrier electrical signal in the other modulated optical signal, Th...
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