阅读说明：本技术 一种小型电扫小目标探测雷达 (Small-size electric scanning small-target detection radar ) 是由 刘建平 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种小型电扫小目标探测雷达,N个第一天线辐射单元所在面相对,并且环绕发射机呈圆周排列,形成N个方向上的第一辐射波瓣；每个第二天线辐射单元对应设置于每个第一天线辐射单元的外段并呈相切状,N个第二天线辐射单元环绕呈圆周排列,形成N个方向的第二辐射波瓣；本发明,通过改变辐射天线的形状,当遇到目标物时,第一天线辐射单元的为现有技术中的发射波,其主要目的是反弹用于工作人员计算距离；第二辐射单元为本申请的改进技术,其为非波动性的直线传播,其遇到目的物时,在第一天线辐射单元的发射波的作用下同样发生折返,此时,其形状已发生改变。工作人员可通过该折返图案判断目标物的大小以及具体形态。(The invention relates to a small-sized electrically scanned small target detection radar.N first antenna radiating units are opposite in the surface and are circumferentially arranged around a transmitter to form first radiating lobes in N directions; each second antenna radiation unit is correspondingly arranged at the outer section of each first antenna radiation unit and is tangent, and N second antenna radiation units are arranged circumferentially to form N second radiation lobes in the directions; according to the invention, by changing the shape of the radiation antenna, when a target object is met, the first antenna radiation unit is a transmission wave in the prior art, and the main purpose of the first antenna radiation unit is to rebound for a worker to calculate the distance; the second radiating element is an improved technology of the application, and is non-fluctuating straight-line propagation, when the second radiating element meets an object, the second radiating element is folded back under the action of the transmitted wave of the first radiating element, and at the moment, the shape of the second radiating element is changed. The worker can judge the size and the specific form of the target object through the foldback pattern.)

1. A small-sized electrically scanned small-target detection radar characterized in that: the antenna comprises a transmitting/receiving integrated machine, N first antenna radiation units and N second antenna radiation units; the N first antenna radiating units are opposite in surface and circumferentially arranged around the transmitter to form first radiating lobes in N directions; each second antenna radiation unit is correspondingly arranged at the outer section of each first antenna radiation unit and is tangent, and N second antenna radiation units are arranged circumferentially to form N second radiation lobes in the directions;

the transmitting/receiving integrated machine is connected with the N first antenna radiation units and the N second antenna radiation units through N matrix switches, and each matrix switch is used for controlling the connection and disconnection of one group of first antenna radiation units and one group of second antenna radiation units;

the transmitting/receiving integrated machine controls the second antenna radiation unit and the first antenna radiation unit to continuously transmit signals through the matrix switch, and N first directions and N second directions continuously transmit signals to search a target; when the target object is met, the signal is reflected, the first direction signal and the second direction signal are changed, and the target direction and the target form can be determined.

2. The small electrically scanned small-target detection radar as recited in claim 1, wherein: the first antenna radiating element and the second antenna radiating element adopt printing dipole antenna radiating elements.

3. The small electrically scanned small-target detection radar as recited in claim 1, wherein: and the N matrix switches adopt PIN diode matrix switches.

4. The small electrically scanned small-target detection radar as recited in claim 1, wherein: the circle center of the circumferential plane where the N antenna radiation units are located is provided with a microstrip rectangular patch antenna, and the microstrip rectangular patch antenna is connected to a transmitter through a matrix switch.

5. The small electrically scanned small-target detection radar as recited in claim 1, wherein: the included angle between the plane where the first antenna radiation unit is located and the horizontal plane is 30 degrees, and the amplitude of the second antenna radiation unit is larger than that of the first antenna radiation unit.

6. The detection method of the small electric scanning small target detection radar is characterized in that: the sending/receiving integrated machine sends the first antenna radiation unit signal and the second antenna radiation unit signal.

Technical Field

The invention relates to a small electric scanning small target detection radar, and belongs to the technical field of airport airspace security.

Background

The flying bird is the traditional potential safety hazard in airport clearance area, and the prevention of the flying bird is an international problem threatening flight safety for a long time. With the continuous increase of the flight quantity and the continuous improvement of the ecological environment, the working pressure of bird strike prevention of airports in China is higher and higher. At present, radar is an important technical means for observing bird conditions.

For bird-detecting radar, birds are the main target for detection. Therefore, a small electrically scanned small target detection radar is required.

Disclosure of Invention

In order to solve the technical problems, the invention provides a small electric scanning small target detection radar, which has the following specific technical scheme: the antenna comprises a transmitting/receiving integrated machine, N first antenna radiation units and N second antenna radiation units; the N first antenna radiating units are opposite in surface and circumferentially arranged around the transmitter to form first radiating lobes in N directions; each second antenna radiation unit is correspondingly arranged at the outer section of each first antenna radiation unit and is tangent, and N second antenna radiation units are arranged circumferentially to form N second radiation lobes in the directions;

the transmitting/receiving integrated machine is connected with the N first antenna radiation units and the N second antenna radiation units through N matrix switches, and each matrix switch is used for controlling the connection and disconnection of one group of first antenna radiation units and one group of second antenna radiation units;

the transmitting/receiving integrated machine controls the second antenna radiation unit and the first antenna radiation unit to continuously transmit signals through the matrix switch, and N first directions and N second directions continuously transmit signals to search a target; when the target object is met, the signal is reflected, the first direction signal and the second direction signal are changed, and the target direction and the target form can be determined.

Further, the first antenna radiation unit and the second antenna radiation unit adopt a printing dipole antenna radiation unit.

Further, the N matrix switches are PIN diode matrix switches.

Furthermore, the circle center of the circumferential plane where the N antenna radiation units are located is provided with a microstrip rectangular patch antenna, and the microstrip rectangular patch antenna is connected to the transmitter through a matrix switch.

Furthermore, the included angle between the plane of the first antenna radiation unit and the horizontal plane is 30 degrees, and the amplitude of the second antenna radiation unit is greater than that of the first antenna radiation unit.

Furthermore, the sending/receiving integrated machine sends the first antenna radiation unit signal and the second antenna radiation unit signal

The invention has the beneficial effects that: according to the invention, by changing the shape of the radiation antenna, when a target object is met, the first antenna radiation unit is a transmission wave in the prior art, and the main purpose of the first antenna radiation unit is to rebound for a worker to calculate the distance; the second radiating element is an improved technology of the application, and is non-fluctuating straight-line propagation, when the second radiating element meets an object, the second radiating element is folded back under the action of the transmitted wave of the first radiating element, and at the moment, the shape of the second radiating element is changed. The worker can judge the size and the specific form of the target object through the foldback pattern.

Drawings

Figure 1 is a schematic view of the structure of the present invention,

in the figure: 1-sending/receiving integrated machine, 2-first antenna radiating unit, 3-second antenna radiating unit.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the small electrically scanned small target detection radar includes a transmitting/receiving integrated machine 1, N first antenna radiation units 2, and N second antenna radiation units 3; the N first antenna radiating units 1 are opposite in surface and arranged circumferentially around the transmitter 2 to form first radiating lobes in N directions; each second antenna radiation unit 3 is correspondingly arranged at the outer section of each first antenna radiation unit 1 and is tangent, and N second antenna radiation units 2 are arranged circumferentially to form N directional second radiation lobes;

the transmitting/receiving integrated machine 1 is connected with N first antenna radiating units 2 and N second antenna radiating units 3 through N matrix switches, and each matrix switch is used for controlling the connection and disconnection of a group of first antenna radiating units and second antenna radiating units;

the transmitting/receiving integrated machine controls the second antenna radiation unit 3 and the first antenna radiation unit 2 to continuously transmit signals through the matrix switch, and N first directions and N second directions continuously transmit signals to search a target; when the target object is met, the signal is reflected, the first direction signal and the second direction signal are changed, and the target direction and the target form can be determined. The first antenna radiation element 2 and the second antenna radiation element 3 adopt printed dipole antenna radiation elements. And the N matrix switches adopt PIN diode matrix switches. The circle center of the circumferential plane where the N antenna radiation units are located is provided with a microstrip rectangular patch antenna, and the microstrip rectangular patch antenna is connected to a transmitter through a matrix switch. The included angle between the plane of the first antenna radiation unit 2 and the horizontal plane is 30 degrees, and the amplitude of the second antenna radiation unit 3 is greater than that of the first antenna radiation unit 2. The sending/receiving integrated machine sends out signals of the first antenna radiation unit 2 and signals of the second antenna radiation unit 3.

A first antenna radiating element 2, which is responsible for transmission, and a second antenna radiating element 3, which is responsible for form. The combination is used in radar, and the distance and the morphological characteristics of the target can be obtained.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The meaning of "and/or" as used herein is intended to include both the individual components or both.

The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.