阅读说明：本技术 雷达收发组件 (Radar receiving and transmitting assembly ) 是由 包晓军 刘远曦 李琳 刘会涛 王育才 王永刚 黄辉 刘航 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种雷达收发组件,包括：公共输入端口、共用功分器、第一幅相控制模组、第二幅相控制模组、第一接收端口、第二接收端口、第一环形器、第二环形器、第一极化天线端口、第二极化天线端口、功分复用模组；公共输入端口与所述共用功分器信号连接；公共输入端口分别与第一幅相控制模组、第二幅相控制模组信号连接；第一幅相控制模组分别与第一环形器、第一接收端口信号连接；第二幅相控制模组分别与第二环形器、第二接收端口信号连接；功分复用模组分别与第一环形器、所述第二环形器、第一幅相控制模组、第二幅相控制模组信号连接；第一极化天线端口与第一环形器信号连接,第二极化天线端口与第二环形器信号连接。(The invention discloses a radar transceiving component, comprising: the antenna comprises a common input port, a shared power divider, a first amplitude-phase control module, a second amplitude-phase control module, a first receiving port, a second receiving port, a first circulator, a second circulator, a first polarized antenna port, a second polarized antenna port and a power division multiplexing module; the common input port is in signal connection with the common power divider; the common input port is respectively in signal connection with the first amplitude phase control module and the second amplitude phase control module; the first amplitude and phase control module is respectively in signal connection with the first circulator and the first receiving port; the second amplitude and phase control module is respectively in signal connection with the second circulator and the second receiving port; the power division multiplexing module is respectively in signal connection with the first circulator, the second circulator, the first amplitude-phase control module and the second amplitude-phase control module; the first polarized antenna port is in signal connection with the first circulator and the second polarized antenna port is in signal connection with the second circulator.)

1. A radar transceiving assembly, comprising: the antenna comprises a common input port, a shared power divider, a first amplitude-phase control module, a second amplitude-phase control module, a first receiving port, a second receiving port, a first circulator, a second circulator, a first polarized antenna port, a second polarized antenna port and a power division multiplexing module;

the common input port is in signal connection with the common power divider;

the common input port is respectively in signal connection with the first amplitude-phase control module and the second amplitude-phase control module;

the first amplitude and phase control module is respectively in signal connection with the first circulator and the first receiving port;

the second amplitude and phase control module is respectively in signal connection with the second circulator and the second receiving port;

the power division multiplexing module is respectively in signal connection with the first circulator, the second circulator, the first amplitude-phase control module and the second amplitude-phase control module;

the first polarized antenna port is in signal connection with the first circulator and the second polarized antenna port is in signal connection with the second circulator.

2. The radar transceiver component of claim 1, wherein the power division multiplexing module comprises a first power divider, a second power divider, a first rf switch, and a second rf switch;

the first power divider is in signal connection with the first radio frequency switch and the second radio frequency switch respectively;

the second power divider is in signal connection with the first radio frequency switch and the second radio frequency switch respectively.

3. The radar transceiver component of claim 1, wherein the power division multiplexing module comprises a first power divider, a second power divider, a first rf switch, a second rf switch, a seventh rf switch, and an eighth rf switch;

the first power divider is in signal connection with the seventh radio frequency switch;

the second power divider is in signal connection with the eighth radio frequency switch;

the first radio frequency switch is respectively in signal connection with the seventh radio frequency switch and the second power divider;

the second radio frequency switch is respectively in signal connection with the eighth radio frequency switch and the first power divider.

4. The radar transceiver assembly of claim 1 wherein said first phase control module comprises: the first radio frequency switch, the second amplitude control element, the second amplification element, the second phase control element and the third radio frequency switch are connected in series;

the third radio frequency switch is in signal connection with the shared power divider;

the first amplitude control element is in signal connection with the third radio frequency switch;

the first amplifying element is in signal connection with the first phase control element;

the fourth radio frequency switch is in signal connection with the first phase control element.

5. The radar transceiver assembly of claim 1 wherein said second phase control module comprises: a fifth radio frequency switch, a second amplitude control element, a second amplification element, a second phase control element, and a sixth radio frequency switch;

the fifth radio frequency switch is in signal connection with the shared power divider;

the second amplitude control element is in signal connection with the fifth radio frequency switch;

the second amplifying element is in signal connection with the second phase control element;

the sixth radio frequency switch is in signal connection with the second phase control element.

6. The radar transceiver component of claim 2, further comprising a first limiter, a first low noise amplifier;

the input end of the first amplitude limiter is in signal connection with the first circulator;

the input end of the low noise amplifier is in signal connection with the output end of the first amplitude limiter;

and the output end of the low-noise amplifier is in signal connection with the power division multiplexing module.

7. The radar transceiver component of claim 2, further comprising a second limiter, a second low noise amplifier;

the input end of the second amplitude limiter is in signal connection with a second circulator;

the input end of the second low noise amplifier is in signal connection with the output end of the second amplitude limiter;

and the output end of the second low-noise amplifier is in signal connection with the power division multiplexing module.

8. The radar transceiver assembly of any one of claims 1 to 7, wherein the first polarized antenna port is for transmitting horizontally polarized information;

the second polarized antenna port is for transmitting vertical polarization information.

9. The radar transceiver module as recited in claim 8, wherein a first polarized signal link is provided between said first circulator and said first amplitude control module;

and a second polarized signal link is arranged between the second circulator and the second amplitude-phase control module.

Technical Field

The invention relates to the field of radar detection, in particular to a radar transceiving component.

Background

Currently, in the application of a weather detection radar, a dual-polarization detection radar (or dual-polarization detection radar) mode is generally adopted to detect a weather target. Compared with the traditional mechanical radar, the dual-polarization detection radar has obvious advantages in the aspect of space-time resolution. In engineering application, the dual-polarization detection radar needs to support various working modes such as directional transmission, omnidirectional transmission and the like, and for a receiving and transmitting component of the dual-polarization detection radar, the two beams of a horizontal polarization beam and a vertical polarization beam need to be flexibly realized. Different implementation modes of the receiving and transmitting assembly of the dual-polarization detection radar have important influences on the implementation mode, technical difficulty and cost of the dual-polarization detection radar.

In order to satisfy the operating modes of dual-polarization detection radar, such as horizontal polarization beams, vertical polarization beam directional transmission, and omnidirectional transmission, the transceiver module usually employs a horizontal polarization channel and a vertical polarization channel that are physically independent from each other, so as to implement the operations of horizontal polarization beams, vertical polarization beam directional transmission, and omnidirectional transmission. The vertical polarization receiving channel, the vertical polarization transmitting channel, the horizontal polarization receiving channel and the horizontal polarization transmitting channel respectively and independently use a radio frequency port, a phase shifter and an attenuator to realize beam control of transmitting and receiving. The implementation mode increases the implementation cost of the receiving and transmitting assembly, and simultaneously, the receiving port and the transmitting port are physically separated, so that the number and the cost of external wiring or external radio frequency cables of the receiving and transmitting assembly are increased, and the complexity of a system and the design area of a circuit board are increased.

Disclosure of Invention

The present invention is directed to at least solving the problems of the prior art. Therefore, the invention provides a radar transceiving component which can multiplex transmission channels so as to perform power division processing through a common input port to further obtain excitation signals of horizontal polarized beams and vertical polarized beams, wherein the excitation signals are strictly synchronous.

A radar transceiving module according to an embodiment of the first aspect of the present invention comprises: the antenna comprises a common input port, a shared power divider, a first amplitude-phase control module, a second amplitude-phase control module, a first receiving port, a second receiving port, a first circulator, a second circulator, a first polarized antenna port, a second polarized antenna port and a power division multiplexing module;

the common input port is in signal connection with the common power divider;

the common input port is respectively in signal connection with the first amplitude-phase control module and the second amplitude-phase control module;

the first amplitude and phase control module is respectively in signal connection with the first circulator and the first receiving port;

the second amplitude and phase control module is respectively in signal connection with the second circulator and the second receiving port;

the power division multiplexing module is respectively in signal connection with the first circulator, the second circulator, the first amplitude-phase control module and the second amplitude-phase control module;

the first polarized antenna port is in signal connection with the first circulator and the second polarized antenna port is in signal connection with the second circulator.

The radar transceiving component provided by the embodiment of the invention at least has the following beneficial effects: the transmission channel can be multiplexed to carry out power division processing through the public input port so as to obtain the excitation signals of the horizontal polarization wave beam and the vertical polarization wave beam, the excitation signals are strictly synchronous, the complexity of the system is reduced, and the cost is saved.

According to some embodiments of the present invention, the power division multiplexing module includes a first power divider, a second power divider, a first rf switch, and a second rf switch;

the first power divider is in signal connection with the first radio frequency switch and the second radio frequency switch respectively;

the second power divider is in signal connection with the first radio frequency switch and the second radio frequency switch respectively.

The first radio frequency switch and the second radio frequency switch are respectively driven to be selectively closed, so that a vertical polarization response signal and a horizontal polarization response signal are input to the first receiving port and the second receiving port.

According to some embodiments of the present invention, the power division multiplexing module includes a first power divider, a second power divider, a first rf switch, a second rf switch, a seventh rf switch, and an eighth rf switch;

the first power divider is in signal connection with the seventh radio frequency switch;

the second power divider is in signal connection with the eighth radio frequency switch;

the first radio frequency switch is respectively in signal connection with the seventh radio frequency switch and the second power divider;

the second radio frequency switch is respectively in signal connection with the eighth radio frequency switch and the first power divider.

The seventh radio frequency switch and the eighth radio frequency switch are arranged to improve the isolation of the horizontal polarization response signal and the vertical polarization response signal

According to some embodiments of the invention, the first phase control module comprises: the first radio frequency switch, the second amplitude control element, the second amplification element, the second phase control element and the third radio frequency switch are connected in series;

the third radio frequency switch is in signal connection with the shared power divider;

the first amplitude control element is in signal connection with the third radio frequency switch;

the first amplifying element is in signal connection with the first phase control element;

the fourth radio frequency switch is in signal connection with the first phase control element.

The first amplitude and phase control module is arranged to perform amplitude and phase processing on the horizontal polarization response signal and the vertical polarization response signal so as to analyze amplitude information and phase information of the horizontal polarization response signal and the vertical polarization response signal. And performing amplitude phase processing on the horizontally polarized signal through the first amplitude phase control module so that the horizontally polarized signal has a preset phase and preset amplitude information.

According to some embodiments of the invention, the second phase control module comprises: a fifth radio frequency switch, a second amplitude control element, a second amplification element, a second phase control element, and a sixth radio frequency switch;

the fifth radio frequency switch is in signal connection with the shared power divider;

the second amplitude control element is in signal connection with the fifth radio frequency switch;

the second amplifying element is in signal connection with the second phase control element;

the sixth radio frequency switch is in signal connection with the second phase control element.

And a second amplitude and phase control module is arranged to perform amplitude and phase processing on the horizontal polarization response signal and the vertical polarization response signal so as to analyze amplitude information and phase information of the horizontal polarization response signal and the vertical polarization response signal. And performing amplitude phase processing on the vertical polarization signal through a second amplitude phase control module so that the horizontal polarization signal has a preset phase and preset amplitude information.

According to some embodiments of the invention, further comprising a first limiter, a first low noise amplifier;

the input end of the first amplitude limiter is in signal connection with the first circulator;

the input end of the low noise amplifier is in signal connection with the output end of the first amplitude limiter;

and the output end of the low-noise amplifier is in signal connection with the power division multiplexing module.

The first amplitude limiter is arranged to carry out amplitude limiting processing on the polarized response signal so as to prevent the amplitude of the polarized response signal received by the first polarized antenna port from exceeding a detectable amplitude, and the first low-noise amplifier is used for amplifying effective components in the polarized response signal.

According to some embodiments of the invention, further comprising a second limiter, a second low noise amplifier;

the input end of the second amplitude limiter is in signal connection with a second circulator;

the input end of the second low noise amplifier is in signal connection with the output end of the second amplitude limiter;

and the output end of the second low-noise amplifier is in signal connection with the power division multiplexing module.

The second amplitude limiter is arranged to carry out amplitude limiting processing on the polarization response signal so as to prevent the amplitude of the polarization response signal received by the second polarization antenna port from exceeding a detectable amplitude, and the second low-noise amplifier is used for amplifying effective components in the polarization response signal.

According to some embodiments of the invention, the first polarized antenna port is for transmitting horizontally polarized information;

the second polarized antenna port is for transmitting vertical polarization information.

According to some embodiments of the present invention, a first polarized signal link is provided between the first circulator and the first amplitude and phase control module;

and a second polarized signal link is arranged between the second circulator and the second amplitude-phase control module.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a radar transceiver module according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a power division multiplexing module of a radar transceiver module according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a power division multiplexing module of a radar transceiver module according to another embodiment of the present invention.

Fig. 4 is a partial schematic view of the radar transceiver assembly of fig. 1.

Description of the reference numerals

10. A common input port; 11. sharing a power divider; 20. a first amplitude and phase control module; 30. a second phase control module; 21. a fourth radio frequency switch; 22. a first phase control element; 23. a first amplifying element; 24. A first amplitude control element; 25. a third radio frequency switch; 31. a fifth radio frequency switch; 32. a second amplitude control element; 33. a second amplifying element; 34. a second phase control element; 35. a sixth radio frequency switch; 40. a power division multiplexing module; 41. a first radio frequency switch; 42. a second radio frequency switch; 43. a first power divider; 44. a second power divider; 45. a seventh radio frequency switch; 46. an eighth radio frequency switch; 51. a first receiving port; 52. a second receiving port; 53. a first polarized antenna port; 54. a second polarized antenna port; 61. a first circulator; 62. a second circulator; 71. a first limiter; 72. a second limiter; 81. a first low noise amplifier; 82. a second low noise amplifier; 91. a first polarized signal link; 92. a second polarized signal link.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

First embodiment

Referring to fig. 1, fig. 1 is a schematic structural diagram of a radar transceiver module according to an embodiment of the present invention. A radar transceiving assembly, comprising: the antenna comprises a common input port 10, a common power divider 11, a first amplitude-phase control module 20, a second amplitude-phase control module 30, a first receiving port 51, a second receiving port 52, a first circulator 61, a second circulator 62, a first polarized antenna port 53, a second polarized antenna port 54 and a power division multiplexing module 40; the common input port 10 is in signal connection with a common power divider 11; the common input port 10 is respectively in signal connection with the first amplitude-phase control module 20 and the second amplitude-phase control module 30; the first amplitude and phase control module 20 is respectively in signal connection with the first circulator 61 and the first receiving port 51; the second amplitude control module 30 is respectively connected with the second circulator 62 and the second receiving port 52 in a signal mode; the power division multiplexing module 40 is respectively in signal connection with the first circulator 61, the second circulator 62, the first amplitude-phase control module 20 and the second amplitude-phase control module 30; first polarized antenna port 53 is in signal connection with first circulator 61 and second polarized antenna port 54 is in signal connection with second circulator 62.

Referring to fig. 2, fig. 2 is a schematic diagram of a power division multiplexing module of a radar transceiver module according to an embodiment of the present invention.

The power division multiplexing module 40 includes a first power divider 43, a second power divider 44, a first rf switch 41, and a second rf switch 42; the first power divider 43 is in signal connection with the first rf switch 41 and the second rf switch 42, respectively; the second power divider 44 is in signal connection with the first rf switch 41 and the second rf switch 42, respectively.

Second embodiment

Referring to fig. 3, fig. 3 is a schematic diagram of a power division multiplexing module of a radar transceiver module according to another embodiment of the present invention. The power division multiplexing module 40 includes a first power divider 43, a second power divider 44, a first rf switch 41, a second rf switch 42, a seventh rf switch 45, and an eighth rf switch 46; the first power divider 43 is in signal connection with a seventh radio frequency switch 45; the second power divider 44 is in switching signal connection with an eighth rf switch 46; the first rf switch 41 is respectively in signal connection with the seventh rf switch 45 and the second power divider 44; the second rf switch 42 is respectively connected to the eighth rf switch 46 and the first power divider 43.

Referring to fig. 3, the first rf switch 41, the second rf switch 42, the seventh rf switch 45, the eighth rf switch 46, the first power divider 43, and the second power divider 44 are driven in a time-sharing manner to selectively transmit the horizontal polarization response signal and the vertical polarization response signal to the first receiving port 51 and the second receiving port 52.

Referring to fig. 4, fig. 4 is a partial schematic view of the radar transceiver module of fig. 1. The first phase control module 20 includes: a third rf switch 25, a first amplitude control element 24, a first amplification element 23, a first phase control element 22, a fourth rf switch 21; the third radio frequency switch 25 is in signal connection with the shared power divider 11;

the first amplitude control element 24 is in signal connection with a third radio frequency switch 25; the first amplifying element 23 is in signal connection with the first phase control element 22; the fourth rf switch 21 is in signal connection with the first phase control element 22.

The second phase control module 30 includes: a fifth radio frequency switch 31, a second amplitude control element 32, a second amplification element 33, a second phase control element 34, a sixth radio frequency switch 35; the fifth radio frequency switch 31 is in signal connection with the shared power divider 11; the second amplitude control element 32 is in signal connection with the fifth radio frequency switch 31; the second amplifying element 33 is in signal connection with a second phase control element 34; the sixth radio frequency switch 35 is in signal connection with the second phase control element 34.

Referring to fig. 4 again, the radar transceiver module further includes a first limiter 71 and a first low noise amplifier 81; the input end of the first amplitude limiter 71 is in signal connection with the first circulator; the input end of the low noise amplifier is in signal connection with the output end of the first amplitude limiter 71; the output end of the low noise amplifier is connected with the power division multiplexing module 40 through signals.

The radar transceiver component further comprises a second limiter 72, a second low noise amplifier 82; the input of the second limiter 72 is signal connected to the second circulator; the input terminal of the second low noise amplifier 82 is in signal connection with the output terminal of the second limiter 72; the output terminal of the second low noise amplifier 82 is connected to the power division multiplexing module 40.

The first polarized antenna port 53 is used for transmitting horizontally polarized information; the second polarized antenna port 54 is used to transmit vertically polarized information. A first polarized signal link 91 is arranged between the first circulator and the first amplitude-phase control module 20; a second polarized signal link 92 is provided between the second circulator and the second amplitude and phase control module 30.

The radar transceiver module is described below with reference to specific signal transmission paths.

The common input port 10 is used for transmitting a horizontally polarized signal and a vertically polarized signal, and transmits the horizontally polarized signal to the first amplitude and phase control module 20 and the vertically polarized signal to the second amplitude and phase control module 30 through the shared power divider 11.

The first amplitude and phase control module 20 performs amplitude modulation and phase shift processing on the horizontally polarized signal, so that the horizontally polarized signal has preset amplitude information and phase information. The horizontally polarized signal is modulated by the first amplitude and phase control module 20 and transmitted to the circulator through the first polarized signal link 91 and transmitted to the first polarized antenna port 53, so as to be transmitted outward.

The second phase control module performs amplitude modulation and phase shift processing on the vertical polarization signal so that the vertical polarization signal has preset amplitude information and phase information. The vertically polarized signal is modulated by the second amplitude and phase control module 30 and transmitted to the circulator through the second polarized signal link 92 to the second polarized antenna port 54 to be transmitted outward.

When the horizontal polarization signal and the vertical polarization signal are transmitted to the surface of the target to be detected, the horizontal polarization signal and the vertical polarization signal are reflected to generate a horizontal polarization response signal and a vertical polarization response signal. The horizontal polarization response signal and the vertical polarization response signal carry characteristic information of the target to be detected, which is specifically represented as amplitude values and phase values in the horizontal polarization response signal and the vertical polarization response signal. And analyzing the amplitude difference value and the phase difference value in the horizontal polarization response signal, the vertical polarization response signal, the horizontal polarization signal and the vertical polarization signal to obtain the characteristic information of the target to be detected.

In the directional transmission mode, horizontally polarised response signals are received by the radar transceiver device via the first polarised antenna port 53. After being received by the first polarized antenna port 53, the horizontally polarized response signal is transmitted to the first amplitude limiter 71 through the first circulator for amplitude limiting processing, so as to adaptively modulate the amplitude of the horizontally polarized response signal. The first low-noise amplifier 81 performs low-noise amplification processing on the horizontally polarized response signal after the clipping processing.

The horizontally polarized response signal after the low noise amplification processing can be transmitted to the first amplitude and phase control module 20 through the first power divider 43 and the second rf switch 42, and output to the first receiving port 51 after the amplitude and phase modulation processing, so as to be received by the system for amplitude and phase analysis.

The vertically polarized response signal is received by the radar transceiver device via the second polarized antenna port 54. After being received by the second polarized antenna port 54, the vertical polarization response signal is transmitted to the second amplitude limiter 72 through the second circulator for amplitude limiting processing, so as to adaptively modulate the amplitude of the vertical polarization response signal. The second low noise amplifier 82 performs low noise amplification processing on the amplitude-limited vertically polarized response signal.

The vertical polarization response signal after the low noise amplification processing can be transmitted to the second amplitude and phase control module 30 through the second power divider 44 and the first rf switch 41, and output to the second receiving port 52 after the amplitude and phase shift processing, so as to be received by the system for amplitude and phase analysis.

In the omni-directional transmission mode, horizontally polarized response signals are received by the radar transceiver device via the first polarized antenna port 53. After being received by the first polarized antenna port 53, the horizontally polarized response signal is transmitted to the first amplitude limiter 71 through the first circulator for amplitude limiting processing, so as to adaptively modulate the amplitude of the horizontally polarized response signal. The first low-noise amplifier 81 performs low-noise amplification processing on the horizontally polarized response signal after the clipping processing.

The horizontally polarized response signal after the low noise amplification processing can be transmitted to the first amplitude and phase control module 20 through the first power divider 43 and the second rf switch 42, and output to the first receiving port 51 after the amplitude and phase modulation processing, so as to be received by the system for amplitude and phase analysis.

The vertically polarized response signal is received by the radar transceiver device via the second polarized antenna port 54. After being received by the second polarized antenna port 54, the vertical polarization response signal is transmitted to the second amplitude limiter 72 through the second circulator for amplitude limiting processing, so as to adaptively modulate the amplitude of the vertical polarization response signal. The second low noise amplifier 82 performs low noise amplification processing on the amplitude-limited vertically polarized response signal.

The vertical polarization response signal after the low noise amplification processing can be transmitted to the first amplitude and phase control module 20 through the second power divider 44, the first rf switch 41, and the second rf switch 42, and output to the first receiving port 51 after the amplitude and phase shift processing, so as to be received by the system for amplitude and phase analysis.

That is, the first rf switch 41 and the second rf switch 42 are driven to be selectively closed, so that the vertical polarization response signal and the horizontal polarization response signal are both input to the first receiving port 51.

In another omni-directional transmission mode, horizontally polarized response signals are received by the radar transceiver device via the first polarized antenna port 53. After being received by the first polarized antenna port 53, the horizontally polarized response signal is transmitted to the first amplitude limiter 71 through the first circulator for amplitude limiting processing, so as to adaptively modulate the amplitude of the horizontally polarized response signal. The first low-noise amplifier 81 performs low-noise amplification processing on the horizontally polarized response signal after the clipping processing.

The horizontally polarized response signal after the low noise amplification processing can be transmitted to the second amplitude and phase control module 30 through the first power divider 43, the first rf switch 41, and the second power divider 44, and output to the second receiving port 52 after the amplitude and phase shift processing, so as to be received by the system for amplitude and phase analysis.

The vertically polarized response signal is received by the radar transceiver device via the second polarized antenna port 54. After being received by the second polarized antenna port 54, the vertical polarization response signal is transmitted to the second amplitude limiter 72 through the second circulator for amplitude limiting processing, so as to adaptively modulate the amplitude of the vertical polarization response signal. The second low noise amplifier 82 performs low noise amplification processing on the amplitude-limited vertically polarized response signal.

The vertical polarization response signal after the low noise amplification processing can be transmitted to the second amplitude and phase control module 30 through the first rf switch 41 and the second power divider 44, and output to the second receiving port 52 after the amplitude and phase shift processing, so as to be received by the system for amplitude and phase analysis.

That is, the first power divider 43, the first rf switch 41, and the second rf switch 42 are selectively driven to be closed, so that the vertical polarization response signal and the horizontal polarization response signal are both input to the second receiving port 52.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.