Single-station Doppler distance-measuring and positioning method

A positioning method and Doppler pulse technology, which are used in the field of real-time positioning and detection of moving targets using only single-station Doppler frequency shift information
CN101561499BActive Publication Date: 2012-10-03CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
4 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
Publication Date
2012-10-03

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a single-station Doppler distance-measuring and positioning method, which comprehensively uses a Doppler shift relation, an equal propagation time difference relation and a plane geometric relation and realizes the measurement of the distance and speed of a target in constant linear motion through only three times of successive Doppler shift measurement. According to the three times of successive Doppler shift measurement of adjacent nodes, two ratio equations irrelevant to flight speed can be obtained; according to a condition that stationary periodic pulse propagationtime differences on a propagation path are equal, an independent equation irrelative to the flight speed is obtained; and, in addition, suppose that the target performs linear motion, an equation oflead angles is obtained according to internal and external angle theorem in plane geometry. Thus, the total number of the equations needed for solving three lead angles is obtained. After the solutionof the lead angles, the moving speed of the target is obtained according to the shit relation, and the radial distance of the target is obtained according to the plane geometric relation. The methodof the invention has the advantages of low detection system cost, high measurement accuracy, simple algorithm, good astringency and the like.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention belongs to the field of radio tracking and positioning, and in particular relates to a method for real-time positioning and detection of a moving target by using only single-station Doppler frequency shift information. Background technique:

[0002] Generally, monostatic Doppler radar can only obtain the radial velocity information of the target, and cannot realize the measurement of parameters such as the instantaneous velocity and radial distance of the moving target.

[0003] In order to track and measure maneuvering targets, it is generally necessary to use a network of multiple Doppler radars. Compared with ranging radar, Doppler radar has fewer measurement error sources and higher precision. At present, the speed measurement accuracy of advanced Doppler radar can reach 0.06mm / s. With the development of digital technology and the use of higher frequency carriers, Doppler radar can be made smaller, cheaper and more accurate. In...

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