Unlock instant, AI-driven research and patent intelligence for your innovation.

Ambiguity inhibiting method of imaging radar bearing based on lq

A azimuth fuzzy, imaging radar technology, applied in the direction of reflection/re-radiation of radio waves, use of re-radiation, measurement devices, etc., can solve the problem of radar imaging azimuth ambiguity

Active Publication Date: 2014-07-30
INST OF ELECTRONICS CHINESE ACAD OF SCI
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of this invention is to propose a q (q∈(0, 1]) imaging radar azimuth ambiguity suppression method to solve the azimuth ambiguity problem in radar imaging

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ambiguity inhibiting method of imaging radar bearing based on lq
  • Ambiguity inhibiting method of imaging radar bearing based on lq
  • Ambiguity inhibiting method of imaging radar bearing based on lq

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0072] A kind of based on l of the present invention q The imaging radar azimuth ambiguity suppression method includes:

[0073] Step S1: According to the imaging radar parameters, the geometric relationship between the radar and the observation scene, and the antenna pattern and other information, construct an observation matrix that can suppress azimuth ambiguity;

[0074] Step S1a: According to the azimuth radar echo model, a one-dimensional observation matrix H for suppressing azimuth ambiguity can be constructed a ;

[0075] Step S1b: According to step S1a and the echo model of the two-dimensional imaging radar, the observation matrix H for suppressing azimuth ambiguity of the two-dimensional imaging radar can be constructed 2d ;

[0076] Step S1c: when the scene objects are sparse, uniform down-sampling, random down-sampling and random modulation integral down-sampling can be used for step S1a and step S1b.

[0077] Step S2: Establish based on l q Regularized recons...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an ambiguity inhibiting method of imaging radar bearing based on lq, and relates to an imaging radar signal and information processing technology. The method comprises the steps of: constructing a measurement matrix containing antenna sidelobe information according to a measurement model of radar return by means of information such as imaging radar parameters, a geometrical relationship of radar and a measurement scene and an antenna direction diagram; and realizing radar imaging by an lq reconstruction algorithm and meanwhile inhibiting azimuth ambiguity. Compared with conventional imaging method based on matched filter, the method can inhibit azimuth ambiguity in the imaging radar, so that the imaging quality is improved.

Description

technical field [0001] The invention relates to the technical field of imaging radar signal and information processing, in particular to a method for suppressing azimuth ambiguity in imaging processing, which is a method based on l q (q ∈ (0, 1]) azimuth ambiguity suppression method for imaging radar. Background technique [0002] The research on imaging radar started in the 1950s, which uses synthetic aperture technology to obtain high azimuth resolution. Due to the presence of sidelobes in the antenna pattern in the azimuth direction, the Doppler spectrum in the azimuth direction is not strictly band-limited. The energy of the fuzzy signal is aliased into the main imaging area after sampling at the Pulse Repetition Frequency (PRF), resulting in azimuth ambiguity and reducing the Imaging quality, so azimuth ambiguity is an important problem to be solved in imaging. [0003] l q (q∈(0,1]) regularization is a kind of sparse signal modeling and processing method. It combine...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36G01S13/90
Inventor 张冰尘洪文吴一戎蒋成龙
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI