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

GMTI-based method for rapidly resolving target speed

A target speed and fast technology, applied in the direction of radio wave measurement systems, instruments, etc., can solve the problems of time and resource waste, and achieve the effect of easy engineering implementation, simple method, and less demand for hardware and software resources

Active Publication Date: 2019-09-13
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large-scale traversal to solve fuzzy multiplicity will lead to excessive waste of time and resources

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
  • GMTI-based method for rapidly resolving target speed
  • GMTI-based method for rapidly resolving target speed
  • GMTI-based method for rapidly resolving target speed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. Embodiments of the present application will be described in detail below in conjunction with th...

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 belongs to the field of onboard fire control radar, and particularly relates to a GMTI-based method for rapidly resolving a target speed. The GMTI-based method comprises the following steps of detecting target fuzzy frequencies to be respectively F1 and F2 and main clutter frequencies to be respectively F<Z1> and F<Z2>; respectively calculating Doppler frequency shift F1-F<Z1>+M1f1 and F2-F<Z2>+M2f2 of a target phase on main cluster; respectively calculating speeds of Vt1 and Vt2 of the target phase on the main cluster under conditions of low pulse repetition frequency waveformsPRF1 and PRF2; judging whether difference between the speeds Vt1 and Vt2 conforms to an ambiguity-resolving threshold value Vth; considering the speed Vt1 and Vt2 as target speeds if the difference conforms to the ambiguity-resolving threshold value Vth; and determining a fuzzy multiple number in the step 2 again if the difference does not conform to the ambiguity-resolving threshold value Vth, and repeating the step 3 to the step 4. According to the GMTI-based method for rapidly resolving the target speed, small-range traversing can be performed by taking a frequency where the main cluster islocated as an initial according to the speed distribution characteristic of a ground moving target during resolving the fuzzy multiple number, the speed information of the ground moving target can berapidly resolved, and the demand of software and hardware resource is small.

Description

technical field [0001] The present application belongs to the field of airborne fire control radar, and in particular relates to a method for quickly calculating the target speed based on GMTI. Background technique [0002] Ground Moving Target Indicator (GMTI) is one of the air-to-ground working modes of modern airborne radar. There are often various backgrounds around ground moving targets, such as mountains, buildings, trees, flocks of birds, etc. The echoes generated by these backgrounds are called clutter. When the clutter and the moving target are displayed on the radar display at the same time, it is difficult to observe the target because the power of the clutter is too strong. If the target is in the clutter background, the weak target is submerged in the strong clutter, and it is very difficult to find the target; even if the target is not in the clutter background, it is very difficult to quickly distinguish the moving target in the clutter. Easy. In addition, ...

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): G01S7/41
CPCG01S7/41
Inventor 尹飞孙旭锋蒋晖
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com