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

A Phase Encoding Method for Anti-Speed ​​Deception Jamming of Cognitive Radar

A cognitive radar and speed deception technology, which is applied to measuring devices, instruments, radio wave measurement systems, etc., can solve the problems of anti-interference performance degradation, achieve the effect of suppressing interference and improving the signal-to-interference ratio

Inactive Publication Date: 2017-04-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively suppress strong interference in a single real target scene, but for a multi-target multi-jamming scene, the anti-jamming performance of this method is seriously degraded, and some real targets may not be detected correctly by radar
Judging from the currently published literature, there is no research on the anti-velocity deception jamming waveform design for multi-target scenarios.

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
  • A Phase Encoding Method for Anti-Speed ​​Deception Jamming of Cognitive Radar
  • A Phase Encoding Method for Anti-Speed ​​Deception Jamming of Cognitive Radar
  • A Phase Encoding Method for Anti-Speed ​​Deception Jamming of Cognitive Radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Concrete implementation steps of the present invention are as follows:

[0031] Step 1: Cognitive radar continuously transmits burst signals and receives target echo signals at the same time, and conducts preliminary analysis on the echo signals. If cognitive radar does not detect speed deception interference, it will transmit a burst signal in the next coherent processing interval. A simple burst with an initial phase of 0; if the Cognitive Radar identifies speed-spoofing interference, go to step 2;

[0032] Step 2: The cognitive radar analyzes the echo signal in real time, and constantly updates the target and interference information, and at the same time estimates the relevant parameters of the target and interference through the parameter estimation algorithm: the Doppler estimated value of the real target, the pulse repetition of the interference lag radar The number of periods i, the number P of false target interference, the amplitude and Doppler of each false t...

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 phase encoding method for cognitive radar anti-speed deception interference, which belongs to the technical field of radar anti-interference, and in particular relates to radar anti-interference waveform design technology. This method uses the prior information obtained by the cognitive radar to extract the relevant parameters of the target and interference, and sets a stop band around the Doppler of each real target according to the estimated Doppler value of the real target, and constructs a constant in advance. A stopband is set at the same position of the modulo coded sequence, and the optimal pulse-to-pulse phase coded transmission waveform is designed according to the minimum criterion of the coded signal spectrum energy in the stopband, so that it can effectively suppress speed deception interference in multi-target and multi-jamming scenarios, and improve every The signal-to-interference ratio at a real target can achieve the effect of correct detection of multiple real targets.

Description

technical field [0001] The invention belongs to the technical field of radar anti-jamming, in particular to radar anti-jamming waveform design technology. Background technique [0002] With the emergence of modern deceptive jamming technology based on digital radio frequency memory (DRFM), radar jamming technology has entered the era of coherent jamming. After the jammer intercepts the radar signal, it copies it and modulates the Doppler parameters of the signal, and then forwards the jamming signal back to the radar receiver to form speed deception jamming. This type of interference will affect the radar's detection of the real target Doppler, causing the radar velocity gate to lose lock, interfering with the normal detection of the target by the radar, and also greatly consuming radar resources. Therefore, in order to ensure the correct detection and tracking of radar targets in the jamming environment, it is of great theoretical value and practical significance to improv...

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 Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/2813G01S7/36G01S7/2883
Inventor 崔国龙吴健李雯雯于立岩孔令讲易伟杨晓波
Owner UNIV OF ELECTRONICS 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