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Radar waveform design method based on initial phase-PRI joint modulation

A technology of radar waveforms and design methods, applied in radio wave measurement systems, instruments, etc., to solve problems such as low operation and maintenance costs, traditional radar and adversary threats

Pending Publication Date: 2022-02-15
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Low operation and maintenance costs, even able to detect stealth targets, posing a great threat to traditional radars and opponents

Method used

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  • Radar waveform design method based on initial phase-PRI joint modulation
  • Radar waveform design method based on initial phase-PRI joint modulation
  • Radar waveform design method based on initial phase-PRI joint modulation

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Embodiment Construction

[0067] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0068] To counter non-cooperative base radars such as figure 1 As shown, a radar waveform design method based on initial phase-PRI joint modulation is provided, including the following steps:

[0069] Step S100, acquiring radar emission signals;

[0070] Step S110, according to the actual motion state of the target, the initial phase modulation of the radar transmission signal based on speed deception and the pulse repetition interval modulation based on distance deception are performed to obtain the modulated radar transmission signal;

[0071] Step S120, when the modul...

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Abstract

The invention relates to a radar waveform design method based on initial phase-PRI joint modulation. The method comprises the following steps: modulating based on an initial phase and a pulse repetition interval according to an actual motion state of a target so as to obtain a transmitting signal which can be deception as a non-cooperative bistatic radar in speed and distance; and thereof, the initial phase and the pulse repetition period of the pulse string are jointly modulated based on speed-distance deception information, and then important stealth target scattering echoes can be modulated into fixed clutters by ingeniously utilizing the limitation of a matched filter constructed by non-cooperative bistatic radar signal processing. And fixed clutters can be modulated into moving target echoes so that a shielding effect on an invisible target and a decoy effect based on the fixed clutters are realized, and the purpose of resisting non-cooperative utilization is achieved.

Description

technical field [0001] The present application relates to the technical field of radar signal processing, in particular to a radar waveform design method based on initial phase-PRI joint modulation. Background technique [0002] In the existing technology, some radars do not emit electromagnetic waves themselves, but use the signals of external radiation sources of opportunity to detect and track targets. They can be deployed flexibly and secretly around radar radiation sources; Electromagnetic space situational awareness near radar. The cost of operation and maintenance is low, and it can even detect invisible targets, which poses a great threat to traditional radars and opponents. [0003] To resist this kind of radar, waveform design is an important research idea of ​​radar system. Contents of the invention [0004] Based on this, it is necessary to provide a radar waveform design method based on initial phase-PRI joint modulation for the above technical problems. ...

Claims

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Application Information

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IPC IPC(8): G01S7/38G01S7/282
CPCG01S7/38G01S7/282
Inventor 唐泽家鲍庆龙潘嘉蒙王森戴华骅苏汉宁
Owner NAT UNIV OF DEFENSE TECH
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