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Same-frequency clutter interference cancellation device and x-band single-antenna continuous wave radar system

A clutter interference and cancellation device technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of submerging echo signals, reducing the actual sensitivity of the receiver, blocking the front end of the receiver, etc., to achieve the same frequency clutter interference Effect

Active Publication Date: 2018-07-20
超视距(南京)科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The same-frequency clutter interference of continuous wave radar will affect the normal operation of the system, such as reducing the actual sensitivity of the receiver, blocking the front end of the receiver, submerging useless echo signals or generating false signals, etc.

Method used

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  • Same-frequency clutter interference cancellation device and x-band single-antenna continuous wave radar system
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  • Same-frequency clutter interference cancellation device and x-band single-antenna continuous wave radar system

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Embodiment Construction

[0019] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0020] Such as figure 1 As shown, the same-frequency clutter interference cancellation device includes a cancellation control module and a circulator module, a coupler module, an error detection module and a digital processing module respectively connected to the cancellation control module, wherein the error detection module is also connected to the coupling Connector module and digital processing module.

[0021] Wherein...

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Abstract

The invention discloses a same-frequency clutter interference cancellation apparatus and an X wave band single antenna continuous wave radar system. The same-frequency clutter interference cancellation apparatus comprises a cancellation control module, a circulator module, a coupler module, an error detection module and a digital processing module, wherein the circulator module, the coupler module, the error detection module and the digital processing module are connected with the cancellation control module; the error detection module is also connected with the coupler module and the digital processing module. The same-frequency clutter interference cancellation apparatus can detect a residual error signal of the cancellation control module through the error detection module, and sends the error signal to the digital processing module for processing, and then generates a voltage control signal to control the cancellation control module to acquire a cancellation signal so as to realize cancellation of same-frequency clutter interference, wherein the cancellation signal is same in amplitude as a leakage signal and inverse in phase to the leakage signal.

Description

technical field [0001] The invention relates to the fields of millimeter wave communication technology and wireless communication technology, in particular to a same-frequency clutter interference cancellation device and an X-band single-antenna continuous wave radar system. Background technique [0002] There are many types of radars, and the classification method is very complicated. Among them, the radar that continuously emits electromagnetic waves is called continuous wave radar, and continuous wave radar can be divided into non-modulated single-frequency or multi-frequency continuous wave radar and frequency-modulated continuous wave radar according to the type of transmitted signal. Continuous wave radar has been widely used in many fields such as civil and military, but it also has key technical bottlenecks. [0003] When continuous wave radar is used to detect target information, there are often stationary obstacles between the transmitting antenna and the target t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/36
CPCG01S7/36
Inventor 邵振海倪杰
Owner 超视距(南京)科技有限责任公司
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