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

High-speed target detection method based on multi-sub-pulse processing

A high-speed target and detection method technology, applied in the field of radar detection, can solve problems such as cumulative performance impact, and achieve the effect of low interception performance and good interception performance

Pending Publication Date: 2021-10-29
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The algorithm can correct the walking problem, but the approximate processing used in it will have a certain impact on the accumulation performance

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
  • High-speed target detection method based on multi-sub-pulse processing
  • High-speed target detection method based on multi-sub-pulse processing
  • High-speed target detection method based on multi-sub-pulse processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0036] In this embodiment, a composite linear frequency modulation signal (Linear Frequency Modulization Waveform, LFM) is used as an orthogonal sub-pulse to form a non-stationary multi-sub-pulse composite waveform, including the following steps:

[0037] Step 1: Using the composite LFM signal, design a cluster of quadrature signal waveforms with good auto / cross-correlation properties:

[0038] Step 1-1: Composite LFM signal model:

[0039] A time-varying phase disturbance term is added to the reference LFM signal, and different phase disturbance functions are added multiple times to generate a complex LFM signal waveform cluster with phase disturbance. The expression of the complex LFM signal is as follows:

[0040] the s m (t)=a m (t)exp(j2π...

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 a high-speed target detection method based on multi-sub-pulse processing, which is applied to the technical field of radar detection and aims at solving the problem that the high-speed target detection performance of the existing radar is not high. The method comprises the steps of: firstly, splicing waveforms which are mutually orthogonal in pairs into a long pulse signal, wherein different modulation modes can be provided among the orthogonal sub-waveforms, so that complex modulation of the waveforms is realized; secondly, providing an echo processing mode based on multiple sub-pulses according to a special waveform structure spliced by the sub-pulses, and performing pulse compression processing on echoes by using each sub-pulse forming a transmitted waveform; and finally, completing coherent processing within one pulse repetition time to obtain the position and speed information of a target. The high-speed target detection method is suitable for high-speed target detection.

Description

technical field [0001] The invention belongs to the technical field of radar detection, in particular to a high-speed target detection technology. Background technique [0002] In recent years, with the rapid development of modern aviation technology and radar field, the detection range of radar includes more and more high-speed targets and even ultra-high-speed targets. The space and space defense system brings huge challenges and threats to national space and space security and territorial integrity. Doing everything possible to improve the radar's high-speed target detection performance has become a severe task for radar designers. [0003] In terms of radar waveform design, in order to improve the radar's high-speed target detection capability in complex electromagnetic environments, a chirp signal with high Doppler tolerance has been designed, but the chirp signal is easy to be intercepted; the resulting phase encoding Signal, such as the literature [Levanon N.Multica...

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): G01S7/285G01S7/292G01S13/06G01S13/58
CPCG01S7/285G01S7/2923G01S13/06G01S13/583
Inventor 余显祥邱慧林瑜卜祎崔国龙方学立王睿甲张立东孔令讲
Owner UNIV OF ELECTRONIC SCI & TECH 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