Microwave photon full-band radar detection method and microwave photon full-band radar

Abstract

The invention discloses a microwave photon full-band radar detection method. The microwave photon full-band radar detection method comprises the steps that suppression carrier single sideband modulation is carried out on an optical carrier with a frequency of fL by using an intermediate frequency chirp signal to obtain a linear frequency swept first-order sideband optical signal; a single comb signal is selected from optical frequency comb signals with frequency distribution fOC=fL+/-Nfc to combine beams with the linear frequency swept first-order sideband optical signal, wherein N=0, 1, 2, 3... L, and L is a positive integer; the obtained combined beam optical signal is converted into an electrical signal, and the electrical signal is transmitted to a target as a radar detection signal; and the combined beam optical signal is taken as a reference optical signal, a target reflected electrical signal is subjected to optical domain frequency conversion and deskewing processing to obtainan intermediate frequency signal carrying target information, and the target information is extracted from the intermediate frequency signal. The invention further discloses a microwave photon full-band radar. The microwave photon full-band radar detection method and the microwave photon full-band radar can quickly and conveniently adjust the working wave band of the radar and the radar signal parameters in the full wave band range, the structure is simple, and the detection efficiency is high.

Description

technical field [0001] The invention relates to a microwave photon radar detection method, in particular to a microwave photon full-band radar detection method and a microwave photon full-band radar system. Background technique [0002] Radar is the main means for humans to detect and identify all-weather targets. Multi-functional, high-precision, and real-time detection has always been the goal pursued by radar researchers. According to the characteristics of the electromagnetic spectrum, electromagnetic waves in different frequency bands have specific advantages. In order to meet different detection requirements, radars need to work in different bands (see [http: / / www.sandia.gov / radar / imagery / index.html#tab- 2]). However, existing radar systems are limited by electronic technology bottlenecks, such as the operating bandwidth of electronic devices. The radar system is mostly limited to fixed frequency band work, (see [S.Kneifel, M.Maahn, G.Peters, C.Simmer,"Observation of...

AI Technical Summary

Problems solved by technology

Therefore, the use of microwave photonic technology is expected to realize a full-band radar system and solve the shortcomings of existing radars with fixed operating bands.

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