Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Indistinguishable multi-target detection method for monopulse radar seekers

A single-pulse radar and detection method technology, applied in the field of target tracking, can solve the problems of angle measurement error, target echo phase distortion, etc., and achieve the effect of improving the accuracy and stability of angle tracking and improving the ability to resist angle flicker.

Inactive Publication Date: 2014-03-26
SHANGHAI DIANJI UNIV
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The problem of multi-target detection has always been a thorny problem that monopulse radars need to solve. Most of the monopulse radars used in service use the traditional amplitude ratio, phase ratio, or the maximum likelihood method, but at most they can only detect 2 goals
[0010] In addition, the angular scintillation problem is one of the important factors affecting the target detection and angular tracking accuracy of the monopulse radar seeker. When the seeker approaches the target, the random changes in the scattering intensity and relative phase of different parts of the complex target will inevitably cause the target The distortion of the echo phase random wave front, the inclination and random swing of the wave front on the aperture surface of the receiving antenna will inevitably cause angle measurement errors

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
  • Indistinguishable multi-target detection method for monopulse radar seekers
  • Indistinguishable multi-target detection method for monopulse radar seekers
  • Indistinguishable multi-target detection method for monopulse radar seekers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0025] figure 1 It is a flow chart of the steps of a single-pulse radar seeker indistinguishable multi-target detection method of the present invention. Such as figure 1 Shown, a kind of monopulse radar seeker of the present invention indistinguishable multi-target detection method comprises the steps:

[0026] Step 101, modeling indistinguishable multi-objects.

[0027] A typical monopu...

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 indistinguishable multi-target detection method for monopulse radar seekers. The method includes the steps of modeling multiple indistinguishable targets, and building signal vector and parameter vector relation; according to parameters of a built model, describing trace information by a particle set; using the particle set as a particle prior set, resampling the particle set, copying obtained particles to a posterior particle set, and repeating the operations Np times to obtain a posterior particles set of k-1 moment; calculating and normalizing weights of prior particles, and calculating marginal posterior density under target observation to obtain k-moment pointing vector of a radar antenna. The trace status information and particle filtering are effectively combined, the capacity of distinguishing multiple targets within same distance and a speed unit in radar beams is achieved, angular information of the multiple indistinguishable targets is acquired, angular tracking accuracy and stability of the radar seekers is improved, and angular glint resistance is also improved.

Description

technical field [0001] The invention relates to target tracking technology, in particular to an indistinguishable multi-target detection method of a monopulse radar seeker. Background technique [0002] Target tracking technology is widely used in both military and civilian fields such as air defense, air traffic control, air missile defense, satellite monitoring, air target attack, airborne early warning, and ground early warning systems. Improving the hardware of existing equipment, such as array antennas and high-resolution radars, can significantly improve target tracking capabilities. However, monopulse radars are currently widely used in guided weapons. If the overall replacement is to be carried out, it will bring huge costs. Therefore, It is more economical to realize the multi-target detection of the seeker without changing the existing equipment. [0003] The target detection methods of the traditional monopulse radar seeker mainly include the amplitude ratio meth...

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 Applications(China)
IPC IPC(8): G01S13/66
CPCG01S7/41G01S13/726
Inventor 胡秀娟计春雷黎明
Owner SHANGHAI DIANJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products