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MIMO radar array antenna and signal processing method thereof

A technology of radar array and chirp signal, which is applied in the field of radar, can solve the problems such as adverse effects of radar system and difficulty in suppressing transmitted signals, so as to achieve the effect of improving isolation and increasing suppression ability

Active Publication Date: 2018-12-25
杭州捍鹰科技有限公司
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Problems solved by technology

For example, the transceiver isolation can only be about 30dB, and it is difficult to suppress the transmitted signal (referred to as the leakage signal) that leaks into the front end of the receiver, and too much leakage signal will have a negative impact on the normal operation of the radar system

Method used

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  • MIMO radar array antenna and signal processing method thereof
  • MIMO radar array antenna and signal processing method thereof
  • MIMO radar array antenna and signal processing method thereof

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] At present, the radar system used in short-range detection mostly adopts the continuous wave system in order to avoid the unnecessary introduction of the pulse signal into the blind area of ​​distance detection. The high-energy transmitted signal from the transmitting antenna will leak directly to the receiving antenna and enter the receiver. Larger power will cause the activ...

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Abstract

The invention provides a MIMO radar array antenna and a signal processing method thereof, and relates to the technical field of radars. The MIMO radar array antenna comprises two transmitting antennasand four receiving antennas. The four receiving antennas are arranged in sequence at a preset first interval, one transmitting antenna is arranged on the outer side of the first receiving antenna, and the other transmitting antenna is arranged on the outer side of the fourth receiving antenna, and the transmitting antennas are located at a preset second interval from the adjacent receiving antennas, wherein the preset second interval is greater than half of the operating wavelength of the MIMO radar array antenna. According to the MIMO radar array antenna and the signal processing method thereof, a leakage signal can be better suppressed.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a MIMO radar array antenna and a signal processing method thereof. Background technique [0002] Radar is a radio device that actively emits electromagnetic waves and receives target reflected waves to actively detect and locate targets. The radar system, which mainly detects ground vehicles, personnel and low-altitude aircraft, is required to detect short-distance targets and effectively suppress the influence of ground objects on the ground clutter generated by radar echoes. The radar system using the MIMO system (hereinafter referred to as MIMO radar) can transmit orthogonal signals, and the in-phase addition of signals will not be formed at the transmitting end. Strong wave interference ability. [0003] Most of the MIMO detection radars for short-range ground targets in the prior art use X and Ku bands, and the MIMO antenna generally uses half the system operating wavelength...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/28
CPCG01S7/2813
Inventor 问翔
Owner 杭州捍鹰科技有限公司
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