CN113655449A - A kind of device and method for reducing the coupled signal of transceiver antenna in RCS test - Google Patents

A kind of device and method for reducing the coupled signal of transceiver antenna in RCS test Download PDF

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CN113655449A
CN113655449A CN202110878133.9A CN202110878133A CN113655449A CN 113655449 A CN113655449 A CN 113655449A CN 202110878133 A CN202110878133 A CN 202110878133A CN 113655449 A CN113655449 A CN 113655449A
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signal
antenna
transmitting
receiving antenna
control device
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唐文杰
张国荣
李世泉
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AVIC Research Institute Special Structures Aeronautical Composites
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract

本发明属于航空航天天线测试技术领域，公开了一种降低RCS测试中收发天线耦合信号的装置和方法，在用信号反射法对被测物体进行RCS测试中，使用发射天线将发射信号发射向被测物体，此时发射天线处于开路状态，接收天线处于闭合状态；被测物体被发射信号打中后，被测物体将发射信号反射为反射信号，当反射信号到达接收天线时，接收天线处于开路状态接收信号，发射天线处于闭合状态不向外发射信号。本发明通过控制发射天线发射时间和接收天线的接收时间，使收发天线信号不同步，错峰发射信号和接收信号，大大避免了收发天线之间的耦合信号的发生，提高了RCS的测试准确性。

Figure 202110878133

The invention belongs to the technical field of aerospace antenna testing, and discloses a device and method for reducing the coupled signal of a receiving and transmitting antenna in RCS testing. When measuring the object, the transmitting antenna is in an open state and the receiving antenna is in a closed state; after the measured object is hit by the transmitting signal, the measured object reflects the transmitting signal into a reflected signal. When the reflected signal reaches the receiving antenna, the receiving antenna is in an open circuit. The state receives the signal, and the transmitting antenna is in the closed state and does not transmit the signal outward. By controlling the transmitting time of the transmitting antenna and the receiving time of the receiving antenna, the invention makes the transmitting and receiving antenna signals unsynchronized and staggers the peak transmitting and receiving signals, thus greatly avoiding the occurrence of coupled signals between the transmitting and receiving antennas, and improving the test accuracy of the RCS. .

Figure 202110878133

Description

Device and method for reducing coupling signals of transmitting and receiving antenna in RCS test
Technical Field
The invention belongs to the technical field of aerospace antenna testing, relates to a testing device and method for testing a tested object by using a reflection method, and particularly relates to a device and method for reducing transmitting and receiving antenna coupling signals in RCS testing.
Background
The compact field generates a plane wave with good performance in a test dead zone, and the plane wave irradiates a tested object. Firstly, testing a background scattering signal of an empty darkroom (comprising a bracket turntable); finally, placing the target to be tested on a support turntable, and testing the scattering signal of the target in the range of a specified frequency domain and an angular domain; after the test data is finished, processing the data; vector background cancellation and time domain gate processing are carried out on the collected calibration data, the target data and the background data, and influences of clutter such as a support turntable, coupling of a transmitting and receiving antenna, tight range edge strong reflection, rear wall strong reflection and the like are eliminated.
Due to the influence of clutter such as support turntable, transmitting-receiving antenna coupling, strong reflection at the edge of compact range, strong reflection at the rear wall and the like. The performance of the RCS test dead zone is influenced, and the test accuracy of the target RCS is reduced.
In the existing RCS testing technology, foam wave-absorbing materials are placed between receiving and transmitting antennas to eliminate testing influence caused by coupling of the receiving and transmitting antennas, but the foam wave-absorbing materials cannot be completely wrapped on the receiving and transmitting antennas, so that coupling signals of the receiving and transmitting antennas cannot be completely absorbed, interference signals of the coupling signals can appear in a testing dead zone, and errors are caused in analysis of testing results.
Disclosure of Invention
In order to solve the above problems, the present invention provides an apparatus and a method for reducing the coupling signal of the transmitting and receiving antenna in the RCS test, which can effectively eliminate the coupling signal of the transmitting and receiving antenna and effectively improve the quiet zone performance of the RCS test.
The technical scheme of the invention is as follows:
a device for reducing coupling signals of a transmitting antenna and a receiving antenna in an RCS test comprises a transmitting antenna and a receiving antenna, wherein the transmitting antenna is connected with a first control device, the receiving antenna is connected with a second control device, the transmitting antenna transmits signals under the control of the first control device and strikes an object to be tested through a reflecting surface, the transmitting signals are reflected by the object to be tested to be changed into reflecting signals, and the reflecting signals are transmitted back to the receiving antenna controlled by the second control device through the reflecting surface; the transmitting antenna and the receiving antenna are arranged in the same area.
Further, the first control device and the second control device each include a PIN switch; the PIN switch of the first control device is connected with and controls the transmitting antenna, when the PIN switch of the first control device is switched on, the transmitting antenna is in an open-circuit state, and when the PIN switch of the first control device is switched off, the transmitting antenna is in a closed state; and when the PIN switch of the second control device is switched on, the receiving antenna is in an open-circuit state, and when the PIN switch of the second control device is switched off, the receiving antenna is in a closed state. The open circuit and the close circuit of the transmitting antenna and the receiving antenna are controlled by the PIN switch, the reaction time is short, the state switching is rapid, and the requirement of the method can be met.
Further, the first control device and the second control device each include a timer, and the PIN switches of the first control device and the second control device are connected and controlled by the timers of the first control device and the second control device. The timer is the simplest time gate control mechanism, and has low cost, high reliability and low possibility of failure.
A method for reducing the coupling signal of the receiving and transmitting antenna in the RCS test, in RCS test to the testee with the signal reflection method, use the transmitting antenna to transmit the transmitting signal to the testee, the transmitting antenna is in the open circuit state at this moment, the receiving antenna is in the closed state; after the object to be measured is hit by the emission signal, the object to be measured reflects the emission signal into a reflection signal, when the reflection signal reaches the receiving antenna, the receiving antenna is in an open circuit state to receive the signal, and the emission antenna is in a closed state to not emit the signal outwards.
Further, the switching of the open and closed states of the transmitting antenna and the receiving antenna is controlled by respective time gate mechanisms, specifically a timer and a PIN switch.
Further, the method specifically comprises the following steps:
when a transmitting antenna receives a source signal, a PIN switch at a transmitting antenna end is powered on to enable the PIN switch to be in a conducting state, the signal is transmitted out through the transmitting antenna at the moment, and the PIN switch at a receiving antenna end is in a closed state at the moment, so that the receiving antenna does not receive the transmitting signal from the transmitting antenna;
step two, after the signal is transmitted by the transmitting antenna, the timer records that a certain time t1 passes, the PIN switch at the transmitting antenna end is closed to enable the PIN switch to be in a closed state, the PIN switch at the receiving antenna end is opened to enable the PIN switch to be in an open state, and the receiving antenna starts to receive the reflected signal from the measured object;
step three, after the two PIN switches are respectively switched into the states, after the timer records that a certain time t2 passes, the PIN switch at the transmitting antenna end is opened to enable the PIN switch to be in the open-circuit state, the PIN switch at the receiving antenna end is closed to enable the PIN switch to be in the closed state, and the transmitting antenna restarts to transmit signals;
and step four, repeating the step two and the step three until the RCS test is completed.
Further, the t1 time is: the transmission signal is transmitted by the transmitting antenna and then reaches the object to be measured in the form of parallel waves through the reflecting surface, and the time taken at this time is t 1. By measuring in advance and determining the time of t1 to set the timer, the receiving antenna can be ensured not to receive signals when the signals are transmitted, and the transmitting antenna can not transmit signals when the receiving antenna receives the signals, thereby avoiding mutual interference from influencing the RCS test.
Further, the t2 time is: when the reflected signal of the object to be measured reaches the receiving antenna through the reflecting surface, the signal is amplified through the low-noise amplifier, and the time used after the signal enters the vector network to read data is t 2. By setting the timer in advance of the time measured and determined at t2, it is ensured that the test runs continuously and uninterruptedly and that the transmitting and receiving antennas do not interfere with each other.
The invention has the advantages that:
1. the invention controls the transmitting time of the transmitting antenna and the receiving time of the receiving antenna, so that the signals of the transmitting antenna and the receiving antenna are asynchronous, and the signals are transmitted and received by staggering peaks, thereby greatly avoiding the generation of coupling signals between the transmitting antenna and the receiving antenna and improving the test accuracy of RCS;
2. the invention uses a simple time door mechanism, has high reliability and low cost, and can ensure long-time uninterrupted operation;
3. the invention has little change to the original RCS test and is convenient for the tester to test.
Drawings
FIG. 1 is a schematic diagram of the RCS test principle of the present invention;
FIG. 2 is a schematic diagram of the timer and PIN switch of the present invention;
the system comprises a transmitting antenna 1, a receiving antenna 2, a first control device 3, a second control device 4, a reflecting surface 5, a measured object 6, a timer 7, a power amplifier 8, a source signal 9, a low noise amplifier 10 and a vector network 11.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention.
A device for reducing the coupling signal of a transmitting antenna and a receiving antenna in an RCS test comprises a transmitting antenna 1 and a receiving antenna 2, wherein the transmitting antenna 1 is connected with a first control device 3, the receiving antenna 2 is connected with a second control device 4, the transmitting antenna 1 transmits a signal under the control of the first control device 3 and strikes a measured object 6 through a reflecting surface 5, the transmitted signal is reflected by the measured object 6 to become a reflected signal, and the reflected signal is transmitted back to the receiving antenna 2 controlled by the second control device 4 through the reflecting surface 5; the transmitting antenna 1 and the receiving antenna 2 are arranged in the same area.
The first control means 3 and the second control means 4 each comprise a PIN switch; the PIN switch of the first control device 3 is connected with and controls the transmitting antenna 1, when the PIN switch of the first control device 3 is switched on, the transmitting antenna 1 is in an open-circuit state, and when the PIN switch of the first control device 3 is switched off, the transmitting antenna 1 is in a closed state; the PIN switch of the second control device 4 is connected with and controls the receiving antenna 2, when the PIN switch of the second control device 4 is turned on, the receiving antenna 2 is in an open state, and when the PIN switch of the second control device 4 is turned off, the receiving antenna 2 is in a closed state. The open circuit and the close circuit of the transmitting antenna 1 and the receiving antenna 2 are controlled by the PIN switch, the reaction time is short, the state switching is rapid, and the method can meet the requirements of the method.
The first control means 3 and the second control means 4 each comprise a timer, and the PIN switches of the first control means 3 and the second control means 4 are connected and controlled by the respective timers 7 of the first control means 3 and the second control means 4. The timer 7 is the simplest time gate control mechanism, and has low cost, high reliability and difficult failure.
A method for reducing the coupling signal of the receiving and transmitting antenna in the RCS test, in RCS test to the testee with the signal reflection method, use the transmitting antenna to transmit the transmitting signal to the testee, the transmitting antenna is in the open circuit state at this moment, the receiving antenna is in the closed state; after the object to be measured is hit by the emission signal, the object to be measured reflects the emission signal into a reflection signal, when the reflection signal reaches the receiving antenna, the receiving antenna is in an open circuit state to receive the signal, and the emission antenna is in a closed state to not emit the signal outwards.
The switching of the open and closed states of the transmitting and receiving antennas is controlled by respective time gate mechanisms, in particular a timer and a PIN switch.
The method specifically comprises the following steps:
when a transmitting antenna receives a source signal, a PIN switch at a transmitting antenna end is powered on to enable the PIN switch to be in a conducting state, the signal is transmitted out through the transmitting antenna at the moment, and the PIN switch at a receiving antenna end is in a closed state at the moment, so that the receiving antenna does not receive the transmitting signal from the transmitting antenna;
step two, after the signal is transmitted by the transmitting antenna, the timer records that a certain time t1 passes, the PIN switch at the transmitting antenna end is closed to enable the PIN switch to be in a closed state, the PIN switch at the receiving antenna end is opened to enable the PIN switch to be in an open state, and the receiving antenna starts to receive the reflected signal from the measured object;
step three, after the two PIN switches are respectively switched into the states, after the timer records that a certain time t2 passes, the PIN switch at the transmitting antenna end is opened to enable the PIN switch to be in the open-circuit state, the PIN switch at the receiving antenna end is closed to enable the PIN switch to be in the closed state, and the transmitting antenna restarts to transmit signals;
and step four, repeating the step two and the step three until the RCS test is completed.
time t1 is: the transmission signal is transmitted by the transmitting antenna and then reaches the object to be measured in the form of parallel waves through the reflecting surface, and the time taken at this time is t 1. By measuring in advance and determining the time of t1 to set the timer, the receiving antenna can be ensured not to receive signals when the signals are transmitted, and the transmitting antenna can not transmit signals when the receiving antenna receives the signals, thereby avoiding mutual interference from influencing the RCS test.
time t2 is: when the reflected signal of the object to be measured reaches the receiving antenna through the reflecting surface, the signal is amplified through the low-noise amplifier, and the time used after the signal enters the vector network to read data is t 2. By setting the timer in advance of the time measured and determined at t2, it is ensured that the test runs continuously and uninterruptedly and that the transmitting and receiving antennas do not interfere with each other.
The method and the principle of the invention are as follows:
the invention designs a device for reducing coupling signals of a transmitting antenna and a receiving antenna in an RCS test, which consists of a timer and a PIN switch, wherein the device is respectively connected with the receiving antenna and the transmitting antenna, a 'time gate' is added to the transmitting antenna in the RCS test, and the receiving antenna is in a closed state when the transmitting antenna transmits signals under the control of the 'time gate' of the device. When the receiving antenna receives signals, the transmitting antenna is in a closed state, so that the signals of the transmitting and receiving antennas are asynchronous, the signals are transmitted and received in a staggered peak mode, the occurrence of coupling signals between the transmitting and receiving antennas is greatly avoided, and the test accuracy of RCS is improved. The device controls the transmitting time of the transmitting antenna and the receiving time of the receiving antenna, so that the signals of the transmitting antenna and the receiving antenna are asynchronous, the signals are transmitted and received in a staggered peak mode, the occurrence of coupling signals between the transmitting antenna and the receiving antenna is greatly avoided, and the test accuracy of RCS is improved.
The invention discloses a device for reducing coupling signals of a receiving antenna and a transmitting antenna in an RCS test.
Step 1: the source signal transmitting signal reaches the device at the transmitting antenna end through the power amplifier, the PIN switch of the device at the transmitting antenna end is powered on to enable the PIN switch to be in a conducting state, the signal is transmitted out through the transmitting antenna at the moment, and the PIN switch of the device at the receiving antenna end is in a closed state to enable the receiving antenna not to receive the transmitting signal from the transmitting antenna at the moment.
Step 2: after the signal is transmitted by the transmitting antenna, the signal reaches a measured object in a parallel wave mode through the reflecting surface, the time used at this time is t1, the PIN switch of the device at the transmitting antenna end is always powered on to enable the PIN switch to be in a conducting state, and the PIN switch of the device at the receiving antenna end is in a closed state. And after t1, the signal generates a reflected signal through the measured object, and at the moment, the timer of the device at the transmitting antenna end records that after t1 time, the PIN switch of the device at the transmitting antenna end is powered off, so that the PIN switch is in a closed state, and the transmitting antenna does not transmit the signal. And at the receiving antenna end, the timer of the device is powered on and in a conducting state after t1 time, so that the receiving antenna starts to receive the reflected signal from the measured object.
And step 3: after the reflected signal of the object to be measured reaches the receiving antenna through the reflecting surface, the signal is amplified through the low-noise amplifier by the device, and the time used after the signal enters the vector network to read data is t 2. The source signal re-emission signal at this time, after the timer of the device at the transmitting antenna end records t2 time, the PIN switch of the device at the transmitting antenna end is powered on to enable the PIN switch to be in a conducting state, so that the transmitting antenna transmits the signal. And at the receiving antenna end, the timer of the device is powered off and is in a closed state after t2 time, so that the receiving antenna does not receive the reflected signal from the measured object.

Claims (8)

1.一种降低RCS测试中收发天线耦合信号的装置，其特征在于，包括发射天线(1)和接收天线(2)，发射天线(1)连接第一控制装置(3)，接收天线(2)连接第二控制装置(4)，发射天线(1)在第一控制装置(3)的控制下发射信号通过反射面(5)击打在被测物体(6)上，发射信号经过被测物体(6)反射变为反射信号，反射信号通过反射面(5)传回由第二控制装置(4)控制的接收天线(2)；发射天线(1)和接收天线(2)设在同一块区域。1. a device for reducing the coupled signal of receiving and transmitting antennas in the RCS test, is characterized in that, comprising a transmitting antenna (1) and a receiving antenna (2), the transmitting antenna (1) is connected to the first control device (3), and the receiving antenna (2) ) is connected to the second control device (4), the transmitting antenna (1) under the control of the first control device (3) transmits a signal through the reflective surface (5) and hits the measured object (6), and the transmitted signal passes through the measured object (6). The reflection of the object (6) becomes a reflected signal, and the reflected signal is transmitted back to the receiving antenna (2) controlled by the second control device (4) through the reflecting surface (5); the transmitting antenna (1) and the receiving antenna (2) are located at the same location. an area. 2.根据权利要求1所述的一种降低RCS测试中收发天线耦合信号的装置，其特征在于，第一控制装置(3)和第二控制装置(4)各自都包括PIN开关；第一控制装置(3)的PIN开关连接并控制发射天线(1)，第一控制装置(3)的PIN开关导通时，发射天线(1)处于开路状态，第一控制装置(3)的PIN开关闭合时，发射天线(1)处于闭合状态；第二控制装置(4)的PIN开关连接并控制接收天线(2)，第二控制装置(4)的PIN开关导通时，接收天线(2)处于开路状态，第二控制装置(4)的PIN开关闭合时，接收天线(2)处于闭合状态。2. a kind of device that reduces transceiver antenna coupling signal in RCS test according to claim 1, is characterized in that, first control device (3) and second control device (4) all comprise PIN switch respectively; The PIN switch of the device (3) is connected to and controls the transmitting antenna (1). When the PIN switch of the first control device (3) is turned on, the transmitting antenna (1) is in an open state, and the PIN switch of the first control device (3) is closed. When the transmitting antenna (1) is in a closed state; the PIN switch of the second control device (4) is connected to and controls the receiving antenna (2), and when the PIN switch of the second control device (4) is turned on, the receiving antenna (2) is in In the open circuit state, when the PIN switch of the second control device (4) is closed, the receiving antenna (2) is in a closed state. 3.根据权利要求2所述的一种降低RCS测试中收发天线耦合信号的装置，其特征在于，第一控制装置(3)和第二控制装置(4)各自都包括定时器，第一控制装置(3)和第二控制装置(4)各自的PIN开关都由第一控制装置(3)和第二控制装置(4)各自的定时器(7)连接并控制。3. a kind of device that reduces the coupling signal of transmitting and receiving antenna in RCS test according to claim 2, it is characterized in that, the first control device (3) and the second control device (4) each comprise a timer, the first control The respective PIN switches of the device (3) and the second control device (4) are connected and controlled by the respective timers (7) of the first control device (3) and the second control device (4). 4.一种降低RCS测试中收发天线耦合信号的方法，其特征在于，在用信号反射法对被测物体进行RCS测试中，使用发射天线将发射信号发射向被测物体，此时发射天线处于开路状态，接收天线处于闭合状态；被测物体被发射信号打中后，被测物体将发射信号反射为反射信号，当反射信号到达接收天线时，接收天线处于开路状态接收信号，发射天线处于闭合状态不向外发射信号。4. a method for reducing the coupled signal of transceiver antenna in RCS test, it is characterized in that, in carrying out RCS test to the object under test with the signal reflection method, the transmitting antenna is used to transmit the transmitting signal to the object under test, and the transmitting antenna is at this moment. In open circuit state, the receiving antenna is in closed state; after the measured object is hit by the transmitted signal, the measured object reflects the transmitted signal into a reflected signal. When the reflected signal reaches the receiving antenna, the receiving antenna is in an open state to receive the signal, and the transmitting antenna is closed. States do not emit signals outward. 5.根据权利要求4所述的一种降低RCS测试中收发天线耦合信号的方法，其特征在于，发射天线和接收天线的开路和闭合状态的切换是通过各自的时间门机构来控制的，时间门机构具体为定时器和PIN开关。5. a kind of method that reduces transceiver antenna coupling signal in RCS test according to claim 4, it is characterized in that, the switching of open circuit and closed state of transmitting antenna and receiving antenna is controlled by respective time gate mechanism, time The door mechanism is specifically a timer and a PIN switch. 6.根据权利要求5所述的一种降低RCS测试中收发天线耦合信号的方法，其特征在于，具体包括以下步骤：6. a kind of method that reduces transceiver antenna coupling signal in RCS test according to claim 5, is characterized in that, specifically comprises the following steps: 步骤一，发射天线收到源信号时，发射天线端的PIN开关加电使PIN开关处于导通状态，这时信号经过发射天线发射出去，而这时的接收天线端的PIN开关处于闭合状态，使接收天线不接收来自发射天线的发射信号；Step 1: When the transmitting antenna receives the source signal, the PIN switch at the transmitting antenna end is powered on to make the PIN switch in a conducting state. At this time, the signal is transmitted through the transmitting antenna, and the PIN switch at the receiving antenna end is in a closed state at this time, so that the receiving antenna is in a closed state. The antenna does not receive the transmitted signal from the transmitting antenna; 步骤二，信号经发射天线发射出去后，定时器记录经过一定时间t1后，关闭发射天线端的PIN开关使之处于闭合状态，打开接收天线端的PIN开关使之处于开路状态，接收天线开始接收来自被测物体的反射信号；Step 2, after the signal is transmitted by the transmitting antenna, the timer records after a certain time t1, close the PIN switch on the transmitting antenna end to make it in a closed state, open the PIN switch on the receiving antenna end to make it in an open state, and the receiving antenna begins to receive incoming messages from the receiver. Measure the reflected signal of the object; 步骤三，两个PIN开关各自切换状态后，定时器记录经过一定时间t2后，打开发射天线端的PIN开关使之处于开路状态，关闭接收天线端的PIN开关使之处于闭合状态，发射天线重新开始发射信号；Step 3: After the two PIN switches are switched respectively, and after a certain time t2 is recorded by the timer, open the PIN switch on the transmitting antenna side to make it open, close the PIN switch on the receiving antenna side to make it in a closed state, and the transmitting antenna starts transmitting again. Signal; 步骤四，重复步骤二和步骤三，直至完成RCS测试。Step 4: Repeat steps 2 and 3 until the RCS test is completed. 7.根据权利要求6所述的一种降低RCS测试中收发天线耦合信号的方法，其特征在于，t1时间是：发射信号经发射天线发射出去后，经过反射面以平行波的形式到达被测物体，这时所用的时间为t1。7. a kind of method that reduces the coupled signal of transceiver antenna in RCS test according to claim 6, is characterized in that, t1 time is: after transmitting signal is transmitted through transmitting antenna, arrives under test in the form of parallel wave through reflecting surface object, the time used at this time is t1. 8.根据权利要求6所述的一种降低RCS测试中收发天线耦合信号的方法，其特征在于，t2时间是：当被测物体的反射信号经过反射面到达接收天线后，经过低噪声放大器放大，使信号进入矢网读取数据后，所用的时间为t2。8. a kind of method that reduces the coupled signal of transmitting and receiving antenna in RCS test according to claim 6, it is characterized in that, t2 time is: when the reflected signal of the measured object reaches the receiving antenna through the reflective surface, it is amplified by the low-noise amplifier. , after the signal enters the vector network to read the data, the time used is t2.
CN202110878133.9A 2021-07-30 2021-07-30 A kind of device and method for reducing the coupled signal of transceiver antenna in RCS test Pending CN113655449A (en)

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CN103308898A (en) * 2013-05-20 2013-09-18 中国电子科技集团公司第四十一研究所 Single-station pulse RCS (Radar Cross Section) testing system based on switch shifting
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CN109917344A (en) * 2019-03-28 2019-06-21 北京环境特性研究所 Corner reflector RCS single antenna measuring system and measurement method in a kind of Compact Range
CN112230209A (en) * 2020-09-28 2021-01-15 北京环境特性研究所 Remote double-station RCS measuring device and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471146A (en) * 1993-06-14 1995-11-28 Motorola, Inc. Method and apparatus for measuring return loss
US6061017A (en) * 1998-05-22 2000-05-09 The United States Of America As Represented By The Secretary Of The Navy System for increasing isolation in active radar augmentation systems
CN102590795A (en) * 2012-02-29 2012-07-18 中国电子科技集团公司第二十二研究所 Microwave scattering property test system based on vector network analyzer
CN102955151A (en) * 2012-10-09 2013-03-06 中国人民解放军63892部队 Adaptive cross-polarization active jamming method and device
CN103308898A (en) * 2013-05-20 2013-09-18 中国电子科技集团公司第四十一研究所 Single-station pulse RCS (Radar Cross Section) testing system based on switch shifting
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CN112230209A (en) * 2020-09-28 2021-01-15 北京环境特性研究所 Remote double-station RCS measuring device and method

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