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Frequency Estimation Method of UWB Signal Based on Microwave Photon Array

An ultra-wideband signal and microwave photon technology, applied in the field of optoelectronic communication, can solve the problems of low frequency estimation efficiency and estimation accuracy of ultra-wideband signals, and achieve the effects of breaking the Rayleigh limit, improving estimation accuracy and improving estimation efficiency.

Active Publication Date: 2021-04-06
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and propose a method for estimating the frequency of an ultra-wideband signal based on a microwave photon array, which is used to solve the problem of low efficiency and accuracy of frequency estimation of an ultra-wideband signal in the prior art The problem

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  • Frequency Estimation Method of UWB Signal Based on Microwave Photon Array
  • Frequency Estimation Method of UWB Signal Based on Microwave Photon Array
  • Frequency Estimation Method of UWB Signal Based on Microwave Photon Array

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0036] refer to figure 1 1. The estimation system adopted in the present invention includes a microwave photon array and a first-order sideband signal generator. Place m cascaded microwave delay lines at equal intervals in space, m=1...M, m≥2, respectively defined as microwave delay line 1, microwave delay line 2,..., microwave delay line m,..., microwave time delay line M, the distance between adjacent microwave time delay lines is d, m cascaded microwave time delay lines form a microwave photon array, and the mth microwave time delay line is cascaded with Mach Zender modulator MZM-m, filter F-m and optical power meter OPM-m. The first-order sideband signal generator connects the laser signal source, antenna 0 and a filter F-0 in parallel to the Mach-Zehnder modulator MZM-0. The filter F-0 in the first-order sideband signal generator is con...

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Abstract

The present invention proposes a method for estimating frequency of arrival of ultra-wideband signals based on a microwave photon array, which is used to solve the technical problems of low estimation efficiency and accuracy of frequency of arrival of ultra-wideband signals existing in the prior art. The implementation steps are: 1) Obtain the first-order sideband signal E 0 (t); 2) construct microwave photon array D; 3) obtain the ultra-broadband signal E that microwave photon array D outputs m Optical power P m ; 4) Define the optical power ratio vector Q; 5) Define M×N related to the array flow pattern vector θ Dimensional matrix 6) Obtain the ultra-broadband signal E output by the microwave photon array D m The frequency of arrival Ω m .

Description

technical field [0001] The invention belongs to the technical field of photoelectric communication, and relates to an ultra-wideband signal frequency estimation method, in particular to an ultra-wideband signal frequency estimation method based on a microwave photon array, which can be used for target detection and passive positioning. Background technique [0002] Ultra-wideband signal frequency estimation is a technology that uses signal receiving equipment in space to receive signals from multiple signal sources in different directions, and uses modern signal processing methods to quickly and accurately obtain the frequency of signal sources. It is used in radar, sonar, wireless communication and other fields. Has important application value. [0003] At present, the latest method for estimating the direction of arrival of ultra-ultra-wideband signals is to use microwave photons to estimate the direction of arrival of ultra-ultra-wideband signals. Compared with the estim...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/08H04B10/079H04B10/516H04B10/70
CPCH04B7/086H04B10/07955H04B10/5165H04B10/70
Inventor 蔡晶晶费旭明宗汝苏若龙车金鸽
Owner XIDIAN UNIV