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Single-antenna angle measurement method based on specular reflection

A specular reflection, single-antenna technology, used in radio wave measurement systems, radio wave reflection/re-radiation, measurement devices, etc. Effects of Multilevel Defuzzification Problems

Pending Publication Date: 2022-01-11
洪春冲 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method relies on the rotation of the antenna, and there are certain limitations in practical applications.

Method used

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  • Single-antenna angle measurement method based on specular reflection
  • Single-antenna angle measurement method based on specular reflection
  • Single-antenna angle measurement method based on specular reflection

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] 1. Basic principles

[0022] When the incident signal passes through a reflector and is reflected by the reflector, it can be received by the receiving antenna at O. At this time, the reflected signal s 2 (t) and direct wave signal s 1 (t) Entering the receiving antenna at the same time, due to the path difference, there is also a time delay difference between the two signals arriving at the receiving antenna. Under certain conditions, when the two signals are completely separated in the time domain, the path difference can be obtained by measuring the time difference of the two signals, so that the angle can be measured according to the relative geometric relationship.

[0023] combine figure 1 , assuming that the target (signal source) is located in the far field, the signal reflected by point B on the mirror AC with a length of L can be received...

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Abstract

The invention discloses a single-antenna angle measurement method based on specular reflection, which aims at the angle measurement problem, realizes angle measurement by using single-antenna receiving based on the multi-path effect of specular reflection, has the advantages of simpler system composition and estimation algorithm, capability of effectively shortening a base line and the like compared with the traditional method, and the has certain theoretical research and engineering application values.

Description

technical field [0001] The invention belongs to the field of radar and electronic countermeasures, and in particular relates to a single-antenna angle measurement method based on specular reflection. Background technique [0002] Angle estimation is an important content in radar, communication, navigation and other fields, and has been extensively studied. The more commonly used angle estimation methods include array multi-beam ratio amplitude angle measurement, array space spectrum estimation angle measurement, phase interferometer angle measurement, etc. Classified according to different observations, it is mainly divided into amplitude measurement methods and phase measurement methods. For example, the array multi-beam ratio method compares the response of the target signal on different directional beams for angle measurement, array spatial spectrum estimation and phase interference. The instrument method uses phase to measure angles. These methods usually require multi...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S13/02
CPCG01S7/02G01S13/02
Inventor 洪春冲朱晓丹马伟男卢鑫徐嘉良李博文李国平
Owner 洪春冲
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