Distance compensation method and device
A distance and distance unit technology, applied in the field of distance compensation methods and devices, can solve the problems of clutter distance-dependent compensation performance degradation and the like
Inactive Publication Date: 2017-08-25
AIR FORCE UNIV PLA
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the sub-aperture loss and prior information mismatch will bring new problems to the method, making the performance of clutter distance-dependent compensation degraded
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0014] Those skilled in the art have been looking for a tool or method to improve this problem for a long time.
[0015] In view of this, the designer of the present invention obtained the distance compensation method and device shown in this proposal through long-term exploration and trial, as well as multiple experiments and efforts, and continuous reform and innovation.
[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope...
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
Login to View More Abstract
The embodiment of the invention provides a distance compensation method and device, and relates to the field of data processing. The distance compensation method and device are applied to distance compensation for airborne multiple-input multiple-output radar of a single-base linear array under non-side-looking condition when transmitting array elements are orthogonal in waveform. The distance compensation method comprises the steps of converting single-frame data received by each distance unit of the radar into multi-frame data of corresponding phased array, acquiring a clutter space-time spectrum of the distance unit by using a sparse recovery algorithm, acquiring a transition covariance matrix, applying the transition covariance matrix of each distance unit to a unit to be detected so as to acquire a transformation matrix, and performance distance compensation on range gate data of each distance unit of the radar. The distance compensation method utilizes the sparse recovery algorithm and does not rely on historical data, a small number of training samples is required, super-resolution of a target can be realized, the estimation performance of the clutter spectrum is improved, thus the estimation accuracy of a clutter covariance matrix is improved, the clutter suppression performance is improved, and distance dependency compensation for the clutter spectrum is realized.
Description
technical field [0001] The invention relates to the field of data processing, in particular to a distance compensation method and device. Background technique [0002] Airborne radar has the advantages of flexible and convenient deployment and a wide range of monitoring. It is often used for important tasks such as remote early warning, command, and surveillance. Because the airborne radar is in the working state of looking down, the clutter in the detection process has a wide distribution range and high intensity, showing strong space-time two-dimensional coupling characteristics. Space-Time Adaptive Processing (STAP: Space-Time Adaptive Processing) technology is different from the traditional one-dimensional space-domain beamforming filter and one-dimensional time-domain Doppler filter, but is formed on the diagonal of the Angle-Doppler two-dimensional plane Clutter notch for adaptive filtering. In order to obtain the space-time two-dimensional optimal processor weight v...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01S13/08G01S13/93
CPCG01S7/4004G01S13/08G01S13/933
Inventor 刘洋
Owner AIR FORCE UNIV PLA