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Radar signal design method capable of resisting intermittent sampling and forwarding interference

A technology of radar signal and design method, applied in the direction of radio wave measurement system, instrument, etc., can solve problems such as interference

Pending Publication Date: 2021-07-20
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Different forwarding modes will produce different interference effects

Method used

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  • Radar signal design method capable of resisting intermittent sampling and forwarding interference
  • Radar signal design method capable of resisting intermittent sampling and forwarding interference
  • Radar signal design method capable of resisting intermittent sampling and forwarding interference

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, in t...

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Abstract

The invention discloses a radar signal design method capable of resisting intermittent sampling and forwarding interference, which comprises the following steps of: starting from the angle of waveform design, coding each symbol in a time domain by adopting a chaos sequence with good pseudo-randomness, and adding a part of signal data in each path in the time domain into equivalent redundant codes according to random arrangement. The MIMO radar performs multi-channel sending and receiving and multi-channel matched filtering on the anti-interference radar signal, so that the pseudo-randomness of the radar waveform pulse is increased, the correlation between the radar echo and the intermittent sampling interference is reduced, and the intra-pulse correlation of the radar signal is reduced, and therefore, and the radar signal has the characteristic of resisting the intermittent sampling interference, therefore, the interference of ISRJ false targets can be effectively reduced and meanwhile, the method does not conflict with a common filter design method, and can be used in a superposed manner.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a radar signal design method for resisting intermittent sampling and forwarding interference. Background technique [0002] In terms of improving communication system performance, studies have shown that multiple input multiple output antenna systems (multiple inmultipleout, MIMO) have more potential than single input single output antenna systems (Single Input Single Output, SISO). Unlike beamforming, MIMO systems make good use of the independence between signals at the array elements, which is one of the reasons why multiple-input multiple-output (MIMO) radar systems have attracted much attention in recent years, which can utilize orthogonal transmit waveforms Provides additional diversity to detect and estimate objects. [0003] Interrupted-Sampling and Repeater Jamming (ISRJ) is a type of jamming based on Digital Radio Frequency Memory (DRFM). Since the radar...

Claims

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Application Information

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IPC IPC(8): G01S7/36G01S7/28
CPCG01S7/36G01S7/28
Inventor 李骥邓倩欧建平王威王新
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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