A frequency modulation continuous wave radar antenna device

A frequency-modulated continuous wave and antenna device technology, which is applied to antennas, antenna unit combinations with different polarization directions, antenna arrays, etc. The effect of transmitting and receiving antenna layout, improving the efficiency of transmitting and receiving, and improving the recognition ability

Active Publication Date: 2018-10-26
HUNAN NOVASKY ELECTRONICS TECH +1
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the above-mentioned frequency-modulated continuous wave radar can only obtain the angle information of the target in the azimuth plane, so it is essentially only a radar based on two-dimensional position testing, and cannot obtain more specific three-dimensional position information of the target; on the other hand , polarization information can reflect the vector characteristics of electromagnetic waves, and is another important information that can be used in addition to time domain, frequency domain and space domain information of electromagnetic waves. It can obtain information that is difficult to characterize by other parameters such as target surface roughness, symmetry and orientation. , so it is an important parameter that is indispensable for completely describing the characteristics of the target, but the target characteristics obtained by the single-polarization antenna are limited, which causes relatively great difficulties in realizing the target recognition, and in order to improve the target recognition ability, it is often necessary to use other methods to reduce clutter

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A frequency modulation continuous wave radar antenna device
  • A frequency modulation continuous wave radar antenna device
  • A frequency modulation continuous wave radar antenna device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the antenna device of the FM continuous wave radar in this embodiment includes a transmitting antenna 11 for transmitting radar high-frequency signals, and multiple groups of receiving antennas for receiving radar echoes. The transmitting antenna 11 is composed of a plurality of first micro With a rectangular array structure formed by connecting antenna array elements 111, multiple groups of receiving antennas are arranged around the rectangular array structure of transmitting antennas 11, that is, arranged around the surrounding edges formed by the rectangular array structure. The multiple groups of receiving antennas at least include two groups of vertical plane receiving antennas respectively arranged on both sides of the horizontal plane of the transmitting antenna 11, and two groups of horizontal plane receiving antennas respectively arranged on both sides of the vertical plane of the transmitting antenna 11, two groups of vertical plane r...

Embodiment 2

[0055] Such as Figure 9 As shown, the antenna device for implementing FM continuous wave radar is basically the same as that of Embodiment 1, except that the dual-polarized antenna in this embodiment adopts +45° obliquely polarized antenna and -45° obliquely polarized antenna, wherein the vertical The +45° obliquely polarized antenna and the -45° obliquely polarized antenna of the planar receiving antenna are all installed horizontally, and the +45° obliquely polarized antenna and the -45° obliquely polarized antenna of the horizontal plane receiving antenna are all vertically arranged. The +45° oblique polarization mode and the -45° oblique polarization mode can be easily realized through the microstrip antenna array element. Specifically, the following Figure 4 The shown vertically polarized microstrip antenna element is rotated 45° counterclockwise to form a -45° obliquely polarized microstrip antenna element.

[0056] The application frequency band of the above-mentione...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an antenna device of a frequency modulation continuous wave radar, comprising an emission antenna used for emitting radar high frequency signals, and a plurality of groups of reception antennas used for receiving radar echoes; the emission antenna is of an rectangle array structure consisting of a plurality of first micro-strip antenna array elements; a plurality of groups of reception antennas are arranged by surrounding the rectangle array structure of the emission antenna; the plurality of the groups of the reception antennas at least comprise two groups of vertical plane reception antennas which are arranged on two sides of the horizontal plane of the emission antenna, and two groups of horizontal plane reception antennas which are arranged on two sides of the vertical plane of the emission antenna, wherein the two groups of the vertical plane reception antennas and the two groups of the horizontal plane reception antennas respectively form a pair of dual-polarized antennas. The invention is compact in structure, low in manufacture cost, can realize object 3D position measurement, and obtains multi-polarized object information.

Description

technical field [0001] The invention relates to the technical field of frequency modulation continuous wave radar, in particular to an antenna device of frequency modulation continuous wave radar. Background technique [0002] FM continuous wave radar transmits high-frequency electromagnetic waves through the transmitting antenna, and then receives the reflected echo of the target through the receiving antenna, so as to output target information through frequency mixing, zero-IF filtering, intermediate frequency amplification, AD sampling, and signal processing. Due to the advantages of low radiation power, high accuracy of distance measurement and speed measurement, high degree of integration, and low cost, FM continuous wave radar is widely used in civilian fields such as traffic monitoring, car driving, industrial control, and anti-intrusion detection. In the application of frequency modulation continuous wave radar, it is usually necessary to obtain the angle information...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): H01Q21/00H01Q21/24H01Q1/38
Inventor易浩王波韩明华衣晓飞
OwnerHUNAN NOVASKY ELECTRONICS TECH