Method for tracking weak maneuvering target angle through airborne digital array radar

A digital array radar and maneuvering target technology, applied in the direction of radio wave reflection/re-radiation, instruments, measuring devices, etc., can solve the problems of filter divergence, limited tracking accuracy, and inability to complete target tracking tasks, etc., to achieve rapid convergence and ease The effect of filtering perturbations

Active Publication Date: 2016-07-06
NANJING UNIV OF SCI & TECH
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, due to the unpredictable motion model of the target, the airborne digital array radar using the Kalman filter tracking algorithm cannot quickly reach the convergence state in the initial stage of tracking, and the tracking accuracy is limited, and sometimes even filter divergence occurs
On the other hand, when entering the end stage of target tracking, that is, when the airborne digital array radar is close to th

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
  • Method for tracking weak maneuvering target angle through airborne digital array radar
  • Method for tracking weak maneuvering target angle through airborne digital array radar
  • Method for tracking weak maneuvering target angle through airborne digital array radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] to combine figure 2 , the method for the airborne digital array radar of the present invention to track the angle of the weak maneuvering target, comprises the following steps:

[0023] The first step, airborne digital array radar and target motion scene modeling

[0024] Set in the geodetic coordinate system, the abscissa M of the airborne digital array radar at time 0 of the system x =4000, vertical coordinate M y =5000, vertical coordinate M z =10000, target abscissa T x =7939.6, ordinate T y =9768.1, vertical coordinate T z =14978.7, the unit is m, the relative position is as image 3 and Figure 4 shown. Taking the position of the target at time 0 as the origin of the coordinate system o', the airborne digital array radar points to the target as the positive direction of the x' axis, and in the x'y'z' coordinate system (the o'z' axis is located at In the vertical plane of , and o'x' to o'z' is clockwise, the o'y' axis forms a right-handed coordinate syste...

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 proposes a method for tracking a weak maneuvering target angle through an airborne digital array radar. The method comprises the steps: taking a pitch angle error and an azimuth angle error as observation values, so as to respectively carry out the real-time measurement of curved line knee points; enabling a digital loop filter to employ a smaller loop equivalent noise bandwidth to tracking a target when there is a knee point. The method increases the angle error convergence rate of an angle tracking loop, reduces the filtering disturbance at the knee point, and maintains the continuity of tracking.

Description

technical field [0001] The invention belongs to the field of airborne digital array radar target tracking, and in particular relates to a method for airborne digital array radar to track weakly maneuvering target angles. Background technique [0002] In 1961, after R.E. Kalman proposed the Kalman filter algorithm, scholars proposed a large number of algorithms based on Kalman filter for the angle tracking of maneuvering targets by airborne digital array radar. Kalman filtering includes state equations and observation equations, in which the state transition matrix in the state equation is the modeling of the motion characteristics of the tracking target, and is also the key to determining whether the target can be accurately tracked. In general, due to the unpredictability of the target's motion model, the airborne digital array radar using the Kalman filter tracking algorithm cannot quickly reach the convergence state in the initial stage of tracking, and the tracking accur...

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
IPC IPC(8): G01S13/68
Inventor 蒋兵兵张仁李韩玉兵李静盛卫星马晓峰
Owner NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap