A passive reconnaissance radio frequency array multiplexing device and method

Abstract

A passive reconnaissance radio frequency array multiplexing device and method, comprising an array multiplexing front-end component, a bidirectional transmission cable and an array multiplexing signal branching component; the array multiplexing front-end component is connected with the array multiplexing signal branching component through the bidirectional transmission cable; the array multiplexing front-end component is used for receiving different frequency band input signals, dividing the input signals into receiver input signals and multiplexing input signals; the receiver input signals are output; the multiplexing input signals are transmitted to the array multiplexing signal branching component after frequency band fusion; the bidirectional transmission cable is used for realizing signal transmission between the array multiplexing front-end component and the array multiplexing signal branching component; the array multiplexing signal branching component is used for receiving and transmitting the multiplexing input signals output by the array multiplexing front-end component; the application solves the problem that the working quadrant of the equipment is complex due to the complex working target environment and insufficient resources; the application improves the equipment use efficiency, reliability and service life.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic reconnaissance, and in particular to a radio frequency array multiplexing device and method for passive reconnaissance. Background Art

[0002] With the continuous advancement and development of communications technology, research in electronic reconnaissance technology is also deepening. The wide frequency band of passive reconnaissance equipment enables a diverse array of front-end antenna units, a large number of front-end devices, and high-precision array installation. Furthermore, due to the diverse operating environments, the layout of antenna arrays also varies. Antenna arrays cover an increasing number of frequency bands, and designers of miniaturized integration are increasingly requiring the same antenna array to operate in multiple frequency bands. In actual reconnaissance operations, due to the concentration of reconnaissance targets, one or more quadrants of the equipment are often idle. However, due to the complex working environment, resources in the working quadrant are insufficient. To enable the equipment to effectively mobilize idle resources and efficiently and variably handle multi-dimensional dynamic targets in the working quadrant, a passive reconnaissance RF array multiplexing device has been designed to enable flexible resource scheduling between the equipment front-end and receiver. Summary of the Invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to propose a radio frequency array multiplexing device and method for passive reconnaissance. By adding an array multiplexing front-end component between the original equipment receiving front-end and the receiver, the antenna receiving signal in this quadrant can be used and analyzed and processed by the other three quadrants, and the receiver in this quadrant can also process the front-end signals of the other three quadrants, thereby improving the equipment utilization efficiency, basic functional reliability and service life of the equipment.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A radio frequency array multiplexing device for passive reconnaissance comprises: an array multiplexing front-end component, a bidirectional transmission cable, and an array multiplexing signal branching component; the array multiplexing front-end component is connected to the array multiplexing signal branching component via the bidirectional transmission cable;

[0006] The array multiplexing front-end component is used to receive input signals of different frequency bands, divide the input signals of different frequency bands into receiver input signals and multiplexed input signals; output the receiver input signals; and transmit the multiplexed input signals to the array multiplexing signal branching component after frequency band fusion;

[0007] Bidirectional transmission cable, used to realize bidirectional signal transmission between array multiplexing front-end components and array multiplexing signal branching components;

[0008] The array multiplexing signal branching component is used to receive and send the multiplexed input signal output by the array multiplexing front-end component.

[0009] The array multiplexing front-end components include array 1 array multiplexing front-end components, array 2 array multiplexing front-end components, array 3 array multiplexing front-end components and array 4 array multiplexing front-end components;

[0010] The array face 1 array face multiplexing front end component, the array face 2 array face multiplexing front end component, the array face 3 array face multiplexing front end component and the array face 4 array face multiplexing front end component are respectively connected to the array face multiplexing signal branching component through a bidirectional transmission cable;

[0011] Array 1 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into first quadrant receiver input signals and other quadrant multiplexing input signals; output the first quadrant receiver input signals; perform frequency band fusion on the other quadrant multiplexing input signals and then transmit them to the array multiplexing signal branching component; the other quadrant multiplexing input signals include second quadrant multiplexing input signals, third quadrant multiplexing input signals and fourth quadrant multiplexing input signals;

[0012] Array 2 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into second quadrant receiver input signals and other quadrant multiplexing input signals; output the second quadrant receiver input signals; perform frequency band fusion on the other quadrant multiplexing input signals and then transmit them to the array multiplexing signal branching component; the other quadrant multiplexing input signals include the first quadrant multiplexing input signals, the third quadrant multiplexing input signals and the fourth quadrant multiplexing input signals;

[0013] Array 3 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into the third quadrant receiver input signal and the other quadrant multiplexing input signal; output the third quadrant receiver input signal; perform frequency band fusion on the other quadrant multiplexing input signal and then pass it to the array multiplexing signal branching component; the other quadrant multiplexing input signal includes the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the fourth quadrant multiplexing input signal;

[0014] The array 4 array multiplexing front-end component is used to receive input signals of different frequency bands, divide the input signals of different frequency bands into the fourth quadrant receiver input signal and the multiplexed input signals of other quadrants; output the fourth quadrant receiver input signal; perform frequency band fusion on the multiplexed input signals of other quadrants and then pass them to the array multiplexing signal branching component; the multiplexed input signals of other quadrants include the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the third quadrant multiplexing input signal.

[0015] The array 1 array multiplexing front-end component, the array 2 array multiplexing front-end component, the array 3 array multiplexing front-end component and the array 4 array multiplexing front-end component each include a plurality of first power splitters, a plurality of SPST switches, a plurality of first equalizers, a combiner, a first amplifier, a plurality of attenuators, a plurality of second equalizers, a plurality of first SPDT switches, a plurality of second amplifiers, a second SPDT switch, a third amplifier and a second power splitter;

[0016] The first power divider is used to split the signals of the same frequency band among the input signals of different frequency bands received by the corresponding array surface, one path is for the input signal of the receiver in the same frequency band in the current quadrant, and the other path is for the multiplexed input signal of other quadrants in the same frequency band, the multiplexed input signal of other quadrants in the same frequency band is transmitted to the SPST switch, and the input signal of the receiver in the same frequency band in the current quadrant is transmitted to the attenuator;

[0017] The SPST switch is used to receive the multiplexed input signals of other quadrants in the same frequency band output by the first power divider, and to select the multiplexed input signals of other quadrants in the same frequency band and then transmit them to the first equalizer;

[0018] The first equalizer is used to adjust the frequency components of the multiplexed input signals in other quadrants of the same frequency band output by the SPST switch, compensate for the attenuation or phase change caused by channel characteristics during transmission, and transmit the signals to the combiner;

[0019] a combiner, configured to perform frequency band fusion on other quadrant multiplexed input signals of different frequency bands output by the first equalizers to obtain a fused signal, and transmit the fused signal to the first amplifier;

[0020] The first amplifier is used to amplify the power of the fused signal output by the combiner to obtain the multiplexed input signal of other quadrants and transmit it to the second SPDT switch;

[0021] an attenuator, configured to receive the input signal of the receiver in the same frequency band as output by the first power divider, reduce the signal strength of the input signal of the receiver in the same frequency band, and transmit the signal to the second equalizer;

[0022] a second equalizer for adjusting the frequency component of the input signal of the receiver in the same frequency band as the output of the attenuator, compensating for the attenuation or phase change caused by the channel characteristics during the transmission process, and transmitting the signal to the first SPDT switch;

[0023] The first SPDT switch is used to select the input signal of the receiver in the same frequency band output by the second equalizer and transmit it to the second amplifier; and is used to select the signals of different frequency bands of other arrays output by the second power divider and transmit them to the second amplifier;

[0024] The second amplifier is used to amplify and output the power of the input signal of the current quadrant receiver in the same frequency band output by the first SPDT switch and the signals of different frequency bands in other arrays;

[0025] The second SPDT switch is used to select the multiplexed input signals of other quadrants output by the first amplifier and transmit them to the array multiplexed signal branching component; and is used to receive and select the multiplexed input signals of other quadrants of other arrays transmitted by the array multiplexed signal branching component and transmit them to the third amplifier;

[0026] The third amplifier is used to amplify the power of the multiplexed input signals of other quadrants of other arrays output by the second SPDT switch and transmit them to the second power divider;

[0027] The second power divider receives the multiplexed input signals of other quadrants of other array surfaces output by the third amplifier, divides them according to different frequency bands, obtains signals of different frequency bands of other array surfaces, and transmits the signals of different frequency bands of other array surfaces to the corresponding first SPDT switches.

[0028] The array multiplexing signal branching component includes an array 1 SPDT switch, an array 1 power splitter, an array 1 SP3T switch, an array 1 amplifier, an array 2 SPDT switch, an array 2 power splitter, an array 2 SP3T switch, an array 2 amplifier, an array 3 SPDT switch, an array 3 power splitter, an array 3 SP3T switch, an array 3 amplifier, an array 4 SPDT switch, an array 4 power splitter, an array 4 SP3T switch and an array 4 amplifier;

[0029] The array 1 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 1 array multiplexing front-end component, and transmit them to the array 1 power splitter; it is used to receive and select the first quadrant multiplexing input signal output by the array 1 amplifier, and transmit it to the array 1 array multiplexing front-end component;

[0030] The array face 1 power splitter is used to split the other quadrant multiplexing input signals output by the array face 1 SPDT switch into the second quadrant multiplexing input signal, the third quadrant multiplexing input signal, and the fourth quadrant multiplexing input signal; transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch;

[0031] The array plane 1 SP3T switch is used to receive and select the first quadrant multiplexed input signal transmitted by the array plane 2 power divider and / or the array plane 3 power divider and / or the array plane 4 power divider;

[0032] The array 1 amplifier is used to amplify the power of the first quadrant multiplexed input signal output by the array 1 SP3T switch and transmit it to the array 1 SPDT switch;

[0033] The array 2 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 2 array multiplexing front-end component, and transmit them to the array 2 power splitter; it is used to receive and select the second quadrant multiplexing input signal output by the array 2 amplifier, and transmit it to the array 2 array multiplexing front-end component;

[0034] The array face 2 power splitter is used to split the other quadrant multiplexing input signals output by the array face 2 SPDT switch into the first quadrant multiplexing input signal, the third quadrant multiplexing input signal and the fourth quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch;

[0035] The array 2SP3T switch is used to receive and select the second quadrant multiplexed input signal transmitted by the array 1 power divider and / or the array 3 power divider and / or the array 4 power divider;

[0036] The array 2 amplifier is used to power amplify the second quadrant multiplexed input signal output by the array 2 SP3T switch and transmit it to the array 2 SPDT switch;

[0037] The array 3 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 3 array multiplexing front-end component, and transmit them to the array 3 power splitter; it is used to receive and select the third quadrant multiplexing input signal output by the array 3 amplifier, and transmit it to the array 3 array multiplexing front-end component;

[0038] The array face 3 power splitter is used to split the other quadrant multiplexing input signals output by the array face 3 SPDT switch into the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the fourth quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch;

[0039] The array face 3SP3T switch is used to receive and select the third quadrant multiplexed input signal transmitted by the array face 1 power divider and / or the array face 2 power divider and / or the array face 4 power divider;

[0040] The array face 3 amplifier is used to amplify the power of the third quadrant multiplexed input signal output by the array face 3SP3T switch and transmit it to the array face 3SPDT switch;

[0041] The array 4 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 4 array multiplexing front-end component, and transmit them to the array 4 power splitter; it is used to receive and select the fourth quadrant multiplexing input signal output by the array 4 amplifier, and transmit it to the array 4 array multiplexing front-end component;

[0042] The array face 4 power splitter is used to split the other quadrant multiplexing input signals output by the array face 4 SPDT switch into the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the third quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, and transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch;

[0043] The array 4SP3T switch is used to receive and select the fourth quadrant multiplexed input signal transmitted by the array 1 power divider and / or the array 2 power divider and / or the array 3 power divider;

[0044] The array 4 amplifier is used to power amplify the fourth quadrant multiplexed input signal output by the array 4 SP3T switch and transmit it to the array 4 SPDT switch.

[0045] A radio frequency array multiplexing method for passive reconnaissance is implemented based on the above radio frequency array multiplexing device for passive reconnaissance, characterized in that the method includes:

[0046] Step 1: The array multiplexing front-end component of array face 1 receives input signals of different frequency bands, inputs the signals of the same frequency band among the input signals of different frequency bands into the same first power divider, and splits the signals into two paths, thereby obtaining the receiver input signal of the same frequency band in the current quadrant and the multiplexed input signals of the same frequency band in other quadrants;

[0047] Step 2: The input signal of the current quadrant receiver of the same frequency band is processed by the attenuator and the second equalizer in sequence, and then is selected by the first SPDT switch. The second amplifier amplifies the power of the selected input signal of the current quadrant receiver of the same frequency band and outputs it;

[0048] Step 3: After the SPST switch is selected, the multiplexed input signals of other quadrants in the same frequency band are passed to the first equalizer. The first equalizer adjusts the frequency components and then passes them to the combiner. The combiner performs frequency band fusion on the multiplexed input signals of other quadrants in the same frequency band to obtain a fused signal, and passes it to the first amplifier. The first amplifier amplifies the power of the fused signal to obtain multiplexed input signals of other quadrants. After the second SPDT switch is selected, the multiplexed input signals of other quadrants are passed to the array 1 SPDT switch in the array multiplexing signal branching component.

[0049] Step 4: The array face 1 SPDT switch receives the multiplexed input signals of other quadrants and transmits them to the array face 1 power splitter. The array face 1 power splitter splits the multiplexed input signals of other quadrants into the second quadrant multiplexed input signals, the third quadrant multiplexed input signals, and the fourth quadrant multiplexed input signals. The second quadrant multiplexed input signals are transmitted to the array face 2 SP3T switch, the third quadrant multiplexed input signals are transmitted to the array face 3 SP3T switch, and the fourth quadrant multiplexed input signals are transmitted to the array face 4 SP3T switch.

[0050] Step 5: If the second-quadrant multiplexing input signal is to be multiplexed to the array 2 array multiplexing front-end component, the array 2 SP3T switch selects the second-quadrant multiplexing input signal. The second-quadrant multiplexing input signal passes through the array 2 amplifier and the array 2 SPDT switch in sequence. The array 2 SPDT switch selects the second-quadrant multiplexing input signal and then passes it to the second SPDT switch in the array 2 array multiplexing front-end component. The second SPDT switch passes the second-quadrant multiplexing input signal to the third amplifier and the second power divider in sequence. The second power divider splits the second-quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are then output.

[0051] If the third-quadrant multiplexing input signal is to be multiplexed to the array 3 array multiplexing front-end component, the array 3 SP3T switch selects the third-quadrant multiplexing input signal, and the third-quadrant multiplexing input signal passes through the array 3 amplifier and the array 3 SPDT switch in sequence. The array 3 SPDT switch selects the third-quadrant multiplexing input signal and then transmits it to the second SPDT switch in the array 3 array multiplexing front-end component; the second SPDT switch transmits the third-quadrant multiplexing input signal to the third amplifier and the second power divider in sequence, and the second power divider splits the second-quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are then output;

[0052] If the fourth quadrant multiplexing input signal is to be multiplexed to the array 4 array multiplexing front-end component, the array 4 SP3T switch selects the fourth quadrant multiplexing input signal, and the fourth quadrant multiplexing input signal passes through the array 4 amplifier and the array 4 SPDT switch in sequence. The array 4 SPDT switch selects the fourth quadrant multiplexing input signal and then passes it to the second SPDT switch in the array 4 array multiplexing front-end component; the second SPDT switch passes the fourth quadrant multiplexing input signal to the third amplifier and the second power divider in sequence, and the second power divider divides the second quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are output.

[0053] The array face 1 multiplexing front-end component in step 1 can also be the array face 2 multiplexing front-end component, the array face 3 multiplexing front-end component, or the array face 4 multiplexing front-end component, so as to realize the multiplexing of the signal received by any array face multiplexing front-end component to the other three array face multiplexing front-end components.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] 1. The present invention increases the adaptability of the original single quadrant to complex multi-target environments by adding an array multiplexing front-end component to process the signals of the current quadrant and the signals of other quadrants separately.

[0056] 2. The multiple components in the array multiplexing front-end assembly of the present invention can be increased or decreased according to actual working conditions, which can optimize the equipment receiving resources and improve the equipment utilization efficiency.

[0057] 3. Since the back-end of the present invention can be selected in multiple dimensions and the receivers of each quadrant function in parallel, the basic functional reliability and service life of the device of the present invention are improved.

[0058] In summary, the present invention installs an array multiplexing front-end component between the original device's receiving front-end and the receiver, so that the antenna receiving signal in this quadrant can be used and analyzed and processed by the other three quadrants, and the receiver in this quadrant can also process the front-end signals of the other three quadrants; through the transmission of radio frequency signals between the array multiplexing front-end component and the array multiplexing signal branching component, each quadrant receiving antenna can be connected to one or more back-end receivers; and through the design of the transceiver switch and the fused frequency band network within the device, the number of cables for transmitting signals between quadrants is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a structural schematic diagram of the present invention.

[0060] Figure 2 It is a schematic diagram of the working principle of the present invention.

[0061] Figure 3 It is a structural diagram of the array multiplexing front-end component of the present invention.

[0062] Figure 4 It is a structural schematic diagram of the array multiplexing signal branching component of the present invention.

[0063] Figure 5 Schematic diagram of multiplexing the frequency band 1 signal of array face 1 to the reception and processing of array face 2. DETAILED DESCRIPTION

[0064] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0065] A radio frequency array multiplexing device for passive reconnaissance, such as Figure 1 As shown, it includes: an array multiplexing front-end component, a bidirectional transmission cable and an array multiplexing signal branching component; the array multiplexing front-end component is connected to the array multiplexing signal branching component through the bidirectional transmission cable;

[0066] The array multiplexing front-end component is used to receive input signals of different frequency bands, divide the input signals of different frequency bands into receiver input signals and multiplexed input signals; output the receiver input signals; and transmit the multiplexed input signals to the array multiplexing signal branching component after frequency band fusion;

[0067] Bidirectional transmission cable, used to realize bidirectional signal transmission between array multiplexing front-end components and array multiplexing signal branching components;

[0068] The array multiplexing signal branching component is used to receive and send the multiplexed input signal output by the array multiplexing front-end component.

[0069] By adding array multiplexing front-end components, bidirectional transmission cables, and array multiplexing signal splitting components to the original equipment, any receiving array front end can be connected to one or more back-end receivers, specifically:

[0070] The array multiplexing front-end assembly is installed between the original equipment's receiving front-end and receiver, forming a signal network with the array multiplexing front-end assemblies in each quadrant through the array multiplexing signal splitter assembly. The array multiplexing front-end assembly and the array multiplexing signal splitter assembly are connected by a bidirectional transmission cable. Through control commands, any receiving front-end of the original equipment can share the received external signals with the four quadrant receivers, and any receiver of the original equipment can freely receive external signals from any antenna pedestal.

[0071] The front-end component of the array reuse has the following functions:

[0072] 1. The input signal splitting function is realized by the first power splitter. One path of the first power splitter is used for the signal input of the current quadrant, and the other path is used for transmission to the array multiplexing signal splitting component;

[0073] 2. The multi-band signal fusion function of this quadrant uses SPST switches and combiners to perform band fusion and selection output on the three band signals (if there are more bands, this method can still be used, only the number of power splitter channels will be increased);

[0074] 3. Transmit and receive selection function: the second SPDT switch selects the working mode according to the receive or send command, and combines with the first SPDT switch to make the receiving front end of this quadrant send signals to the array multiplexing signal branching component, or the external signals of other antenna bases of this quadrant receiver.

[0075] The array multiplexing front-end components are as follows Figure 2As shown, it includes array face 1 array face multiplexing front-end component, array face 2 array face multiplexing front-end component, array face 3 array face multiplexing front-end component and array face 4 array face multiplexing front-end component;

[0076] The array face 1 multiplexing front-end component, the array face 2 multiplexing front-end component, the array face 3 multiplexing front-end component and the array face 4 multiplexing front-end component are respectively connected to the multiplexing signal branching component through a bidirectional transmission cable;

[0077] Array 1 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into first quadrant receiver input signals and other quadrant multiplexing input signals; output the first quadrant receiver input signals; perform frequency band fusion on the other quadrant multiplexing input signals and then transmit them to the array multiplexing signal branching component; the other quadrant multiplexing input signals include second quadrant multiplexing input signals, third quadrant multiplexing input signals and fourth quadrant multiplexing input signals;

[0078] Array 2 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into second quadrant receiver input signals and other quadrant multiplexing input signals; output the second quadrant receiver input signals; perform frequency band fusion on the other quadrant multiplexing input signals and then transmit them to the array multiplexing signal branching component; the other quadrant multiplexing input signals include the first quadrant multiplexing input signals, the third quadrant multiplexing input signals and the fourth quadrant multiplexing input signals;

[0079] Array 3 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into the third quadrant receiver input signal and the other quadrant multiplexing input signal; output the third quadrant receiver input signal; perform frequency band fusion on the other quadrant multiplexing input signal and then pass it to the array multiplexing signal branching component; the other quadrant multiplexing input signal includes the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the fourth quadrant multiplexing input signal;

[0080] The array 4 array multiplexing front-end component is used to receive input signals of different frequency bands, divide the input signals of different frequency bands into the fourth quadrant receiver input signal and the multiplexed input signals of other quadrants; output the fourth quadrant receiver input signal; perform frequency band fusion on the multiplexed input signals of other quadrants and then pass them to the array multiplexing signal branching component; the multiplexed input signals of other quadrants include the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the third quadrant multiplexing input signal.

[0081] The array face 1 array face multiplexing front end component, the array face 2 array face multiplexing front end component, the array face 3 array face multiplexing front end component and the array face 4 array face multiplexing front end component are as follows: Figure 3As shown, each includes a plurality of first power dividers, a plurality of SPST switches, a plurality of first equalizers, a combiner, a first amplifier, a plurality of attenuators, a plurality of second equalizers, a plurality of first SPDT switches, a plurality of second amplifiers, a second SPDT switch, a third amplifier and a second power divider;

[0082] The first power divider is used to split the signals of the same frequency band among the input signals of different frequency bands received by the corresponding array surface, one path is for the input signal of the receiver in the same frequency band in the current quadrant, and the other path is for the multiplexed input signal of other quadrants in the same frequency band, the multiplexed input signal of other quadrants in the same frequency band is transmitted to the SPST switch, and the input signal of the receiver in the same frequency band in the current quadrant is transmitted to the attenuator;

[0083] The SPST switch is used to receive the multiplexed input signals of other quadrants in the same frequency band output by the first power divider, and to select the multiplexed input signals of other quadrants in the same frequency band and then transmit them to the first equalizer;

[0084] The first equalizer is used to adjust the frequency components of the multiplexed input signals in other quadrants of the same frequency band output by the SPST switch, compensate for the attenuation or phase change caused by channel characteristics during transmission, and transmit the signals to the combiner;

[0085] a combiner, configured to perform frequency band fusion on other quadrant multiplexed input signals of different frequency bands output by the plurality of first equalizers to obtain a fused signal, and transmit the fused signal to the first amplifier;

[0086] The first amplifier is used to amplify the power of the fused signal output by the combiner to obtain the multiplexed input signal of other quadrants and transmit it to the second SPDT switch;

[0087] an attenuator, configured to receive the input signal of the receiver in the same frequency band as output by the first power divider, reduce the signal strength of the input signal of the receiver in the same frequency band, and transmit the signal to the second equalizer;

[0088] a second equalizer for adjusting the frequency component of the input signal of the receiver in the same frequency band as the output of the attenuator, compensating for the attenuation or phase change caused by the channel characteristics during the transmission process, and transmitting the signal to the first SPDT switch;

[0089] The first SPDT switch is used to select the input signal of the receiver in the same frequency band output by the second equalizer and transmit it to the second amplifier; and is used to select the signals of different frequency bands of other arrays output by the second power divider and transmit them to the second amplifier;

[0090] The second amplifier is used to amplify and output the power of the input signal of the current quadrant receiver in the same frequency band output by the first SPDT switch and the signals of different frequency bands in other arrays;

[0091] The second SPDT switch is used to select the multiplexed input signals of other quadrants output by the first amplifier and transmit them to the array multiplexed signal branching component; and is used to receive and select the multiplexed input signals of other quadrants of other arrays transmitted by the array multiplexed signal branching component and transmit them to the third amplifier;

[0092] The third amplifier is used to amplify the power of the multiplexed input signals of other quadrants of other arrays output by the second SPDT switch and transmit them to the second power divider;

[0093] The second power divider receives the multiplexed input signals of other quadrants of other array surfaces output by the third amplifier, divides them according to different frequency bands, obtains signals of different frequency bands of other array surfaces, and transmits the signals of different frequency bands of other array surfaces to the corresponding first SPDT switches.

[0094] Among them, the first power divider forms a power divider switch network with its corresponding SPST switch. The first power divider generates the receiver signal input signal of this quadrant and the multiplexing input signal of other quadrants. The high-isolation single-pole double-throw switch (first SPDT switch) ensures that the signal of this quadrant does not interfere with the signals of other quadrants.

[0095] The signal-to-noise ratio degradation in the quadrant of the array multiplexing front-end components is minimal. In the link design, which includes the first power splitter, attenuator, second equalizer, first SPDT switch, and second amplifier, the signal-to-noise ratio degradation, dynamic compression, and gain variation are minimal, based on the iterative implementation of the original equipment's front-end gain array multiplexing function.

[0096] The array multiplexing front-end assembly can combine signals from multiple non-overlapping frequency bands within a quadrant and output them through a single input and output interface, significantly reducing the number of transmission cables required between devices. The frequency-band fusion transceiver network, formed by the SPST switch, combiner, second SPDT switch, first amplifier, third amplifier, and second power splitter, can combine (combine) and split (second power splitter) different operating frequency bands when outputting signals from the current quadrant or receiving multiplexed signals from other quadrants. The transceiver switch design (second SPDT switch) reduces the number of bidirectional transmission cables required, while the first and third amplifiers compensate for the loss and noise degradation of long bidirectional transmission cables between quadrants.

[0097] The array multiplexing signal branching component is as follows Figure 4 As shown, it includes array face 1 SPDT switch, array face 1 power divider, array face 1 SP3T switch, array face 1 amplifier, array face 2 SPDT switch, array face 2 power divider, array face 2 SP3T switch, array face 2 amplifier, array face 3 SPDT switch, array face 3 power divider, array face 3 SP3T switch, array face 3 amplifier, array face 4 SPDT switch, array face 4 power divider, array face 4 SP3T switch and array face 4 amplifier;

[0098] The array 1 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 1 array multiplexing front-end component, and transmit them to the array 1 power splitter; it is used to receive and select the first quadrant multiplexing input signal output by the array 1 amplifier, and transmit it to the array 1 array multiplexing front-end component;

[0099] The array face 1 power splitter is used to split the other quadrant multiplexing input signals output by the array face 1 SPDT switch into the second quadrant multiplexing input signal, the third quadrant multiplexing input signal, and the fourth quadrant multiplexing input signal; transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch;

[0100] The array plane 1 SP3T switch is used to receive and select the first quadrant multiplexed input signal transmitted by the array plane 2 power divider and / or the array plane 3 power divider and / or the array plane 4 power divider;

[0101] The array 1 amplifier is used to amplify the power of the first quadrant multiplexed input signal output by the array 1 SP3T switch and transmit it to the array 1 SPDT switch;

[0102] The array 2 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 2 array multiplexing front-end component, and transmit them to the array 2 power splitter; it is used to receive and select the second quadrant multiplexing input signal output by the array 2 amplifier, and transmit it to the array 2 array multiplexing front-end component;

[0103] The array face 2 power splitter is used to split the other quadrant multiplexing input signals output by the array face 2 SPDT switch into the first quadrant multiplexing input signal, the third quadrant multiplexing input signal and the fourth quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch;

[0104] The array 2SP3T switch is used to receive and select the second quadrant multiplexed input signal transmitted by the array 1 power divider and / or the array 3 power divider and / or the array 4 power divider;

[0105] The array 2 amplifier is used to power amplify the second quadrant multiplexed input signal output by the array 2 SP3T switch and transmit it to the array 2 SPDT switch;

[0106] The array 3 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 3 array multiplexing front-end component, and transmit them to the array 3 power splitter; it is used to receive and select the third quadrant multiplexing input signal output by the array 3 amplifier, and transmit it to the array 3 array multiplexing front-end component;

[0107] The array face 3 power splitter is used to split the other quadrant multiplexing input signals output by the array face 3 SPDT switch into the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the fourth quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch;

[0108] The array face 3SP3T switch is used to receive and select the third quadrant multiplexed input signal transmitted by the array face 1 power divider and / or the array face 2 power divider and / or the array face 4 power divider;

[0109] The array face 3 amplifier is used to amplify the power of the third quadrant multiplexed input signal output by the array face 3SP3T switch and transmit it to the array face 3SPDT switch;

[0110] The array 4 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 4 array multiplexing front-end component, and transmit them to the array 4 power splitter; it is used to receive and select the fourth quadrant multiplexing input signal output by the array 4 amplifier, and transmit it to the array 4 array multiplexing front-end component;

[0111] The array face 4 power splitter is used to split the other quadrant multiplexing input signals output by the array face 4 SPDT switch into the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the third quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, and transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch;

[0112] The array 4SP3T switch is used to receive and select the fourth quadrant multiplexed input signal transmitted by the array 1 power divider and / or the array 2 power divider and / or the array 3 power divider;

[0113] The array 4 amplifier is used to power amplify the fourth quadrant multiplexed input signal output by the array 4 SP3T switch and transmit it to the array 4 SPDT switch.

[0114] Within the array multiplexing signal branching assembly, the array 1 SPDT switch, array 2 SPDT switch, array 3 SPDT switch, array 4 SPDT switch, array 1 power splitter, array 2 power splitter, array 3 power splitter, array 4 power splitter, array 1 SP3T switch, array 2 SP3T switch, array 3 SP3T switch, array 4 SP3T switch, array 1 amplifier, array 2 amplifier, array 3 amplifier, and array 4 amplifier form a transceiver branching network. The transceiver switches establish the transceiver relationship of each quadrant in the multiplexing function. The combination of power splitters and switches allows any quadrant to multiplex or be multiplexed by the other three quadrants. The amplifiers provide gain compensation for link loss introduced by the network.

[0115] The array multiplexing signal branching assembly is interconnected with the array multiplexing front-end assembly of the four arrays. The SPDT switches on arrays 1, 2, 3, and 4 are linked to the second SPDT switches within the array multiplexing front-end assembly of each quadrant, selecting the receive and transmit functions of each quadrant. The received signal is distributed to the other three quadrants through the power dividers on arrays 1, 2, 3, and 4. The SP3T switches on arrays 1, 2, 3, and 4 in each quadrant select the receive quadrant to achieve signal cross-conduction.

[0116] A radio frequency array multiplexing method for passive reconnaissance is implemented based on the radio frequency array multiplexing device for passive reconnaissance described above, and the method comprises:

[0117] Step 1: The array multiplexing front-end component of array face 1 receives input signals of different frequency bands, inputs the signals of the same frequency band among the input signals of different frequency bands into the same first power divider, and splits the signals into two paths, thereby obtaining the receiver input signal of the same frequency band in the current quadrant and the multiplexed input signals of the same frequency band in other quadrants;

[0118] Step 2: The input signal of the current quadrant receiver of the same frequency band is processed by the attenuator and the second equalizer in sequence, and then is selected by the first SPDT switch. The second amplifier amplifies the power of the selected input signal of the current quadrant receiver of the same frequency band and outputs it;

[0119] Step 3: After the SPST switch is selected, the multiplexed input signals of other quadrants in the same frequency band are passed to the first equalizer. The first equalizer adjusts the frequency components and then passes them to the combiner. The combiner performs frequency band fusion on the multiplexed input signals of other quadrants in the same frequency band to obtain a fused signal, and passes it to the first amplifier. The first amplifier amplifies the power of the fused signal to obtain multiplexed input signals of other quadrants. After the second SPDT switch is selected, the multiplexed input signals of other quadrants are passed to the array 1 SPDT switch in the array multiplexing signal branching component.

[0120] Step 4: The array face 1 SPDT switch receives the multiplexed input signals of other quadrants and transmits them to the array face 1 power splitter. The array face 1 power splitter splits the multiplexed input signals of other quadrants into the second quadrant multiplexed input signals, the third quadrant multiplexed input signals, and the fourth quadrant multiplexed input signals. The second quadrant multiplexed input signals are transmitted to the array face 2 SP3T switch, the third quadrant multiplexed input signals are transmitted to the array face 3 SP3T switch, and the fourth quadrant multiplexed input signals are transmitted to the array face 4 SP3T switch.

[0121] Step 5: If the second-quadrant multiplexing input signal is to be multiplexed to the array 2 array multiplexing front-end component, the array 2 SP3T switch selects the second-quadrant multiplexing input signal. The second-quadrant multiplexing input signal passes through the array 2 amplifier and the array 2 SPDT switch in sequence. The array 2 SPDT switch selects the second-quadrant multiplexing input signal and then passes it to the second SPDT switch in the array 2 array multiplexing front-end component. The second SPDT switch passes the second-quadrant multiplexing input signal to the third amplifier and the second power divider in sequence. The second power divider splits the second-quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are then output.

[0122] If the third-quadrant multiplexing input signal is to be multiplexed to the array 3 array multiplexing front-end component, the array 3 SP3T switch selects the third-quadrant multiplexing input signal, and the third-quadrant multiplexing input signal passes through the array 3 amplifier and the array 3 SPDT switch in sequence. The array 3 SPDT switch selects the third-quadrant multiplexing input signal and then transmits it to the second SPDT switch in the array 3 array multiplexing front-end component; the second SPDT switch transmits the third-quadrant multiplexing input signal to the third amplifier and the second power divider in sequence, and the second power divider splits the second-quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are then output;

[0123] If the fourth quadrant multiplexing input signal is to be multiplexed to the array 4 array multiplexing front-end component, the array 4 SP3T switch selects the fourth quadrant multiplexing input signal, and the fourth quadrant multiplexing input signal passes through the array 4 amplifier and the array 4 SPDT switch in sequence. The array 4 SPDT switch selects the fourth quadrant multiplexing input signal and then passes it to the second SPDT switch in the array 4 array multiplexing front-end component; the second SPDT switch passes the fourth quadrant multiplexing input signal to the third amplifier and the second power divider in sequence, and the second power divider divides the second quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are output.

[0124] The above steps are the process of multiplexing the signal received by the array face 1 array multiplexing front-end component to the array face 2 array multiplexing front-end component or the array face 3 array multiplexing front-end component and the array face 4 array multiplexing front-end component. The array face 1 array multiplexing front-end component in step 1 can also be replaced with the array face 2 array multiplexing front-end component or the array face 3 array multiplexing front-end component or the array face 4 array multiplexing front-end component, and the corresponding components in the step are replaced, so as to realize the multiplexing of the signal received by any array face multiplexing front-end component to the other three array face multiplexing front-end components.

[0125] Figure 5 This diagram illustrates the multiplexing of the Band 1 signal from Face 1 to Face 2 for reception and processing. The Band 1 signal from Face 1 is split into one path by the first power divider in Face 1's Face Multiplexing Front-End Assembly, then selected by the SPST switch and transmitted and output via the transceiver switch (second SPDT switch). A long cable (bidirectional transmission cable) transmits the signal from Face 1 to the Face Multiplexing Signal Branching Assembly in the central cabinet. The SPDT switch for Face 1 is set to receive, while the SPDT switch for Face 2 is set to transmit. The signal is then transmitted and output via the SPDT switch for Face 2. A long cable (bidirectional transmission cable) transmits the signal from the Face Multiplexing Signal Branching Assembly in the central cabinet to the Face Multiplexing Front-End Assembly in Face 2. The second SPDT switch is set to receive, while the first SPDT switch is set to receive signals from other faces. As a result, the Band 1 RF signal from Face 1 is ultimately routed to the Face 2 receiver for processing.

[0126] In summary, the present invention installs an array multiplexing front-end component between the original device's receiving front-end and the receiver, so that the antenna receiving signal in this quadrant can be used and analyzed and processed by the other three quadrants, and the receiver in this quadrant can also process the front-end signals of the other three quadrants; through the transmission of radio frequency signals between the array multiplexing front-end component and the array multiplexing signal branching component, each quadrant receiving antenna can be connected to one or more back-end receivers; and through the design of the transceiver switch and the fused frequency band network within the device, the number of cables for transmitting signals between quadrants is greatly reduced.

[0127] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present application, and that in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A radio frequency array multiplexing device for passive reconnaissance, characterized in that: include: Array multiplexing front-end components, bidirectional transmission cables and array multiplexing signal branching components; The array multiplexing front-end component is connected to the array multiplexing signal branching component via a bidirectional transmission cable; The array multiplexing front-end component is used to receive input signals of different frequency bands, divide the input signals of different frequency bands into receiver input signals and multiplexed input signals; output the receiver input signals; and transmit the multiplexed input signals to the array multiplexing signal branching component after frequency band fusion; Bidirectional transmission cable, used to realize bidirectional signal transmission between array multiplexing front-end components and array multiplexing signal branching components; The array multiplexing signal branching component is used to receive and send the multiplexed input signal output by the array multiplexing front-end component; The array face multiplexing front-end component includes an array face 1 array face multiplexing front-end component, an array face 2 array face multiplexing front-end component, an array face 3 array face multiplexing front-end component, and an array face 4 array face multiplexing front-end component; The array 1 array multiplexing front-end component, the array 2 array multiplexing front-end component, the array 3 array multiplexing front-end component and the array 4 array multiplexing front-end component each include a plurality of first power splitters, a plurality of SPST switches, a plurality of first equalizers, a combiner, a first amplifier, a plurality of attenuators, a plurality of second equalizers, a plurality of first SPDT switches, a plurality of second amplifiers, a second SPDT switch, a third amplifier and a second power splitter; The first power divider is used to split the signals of the same frequency band among the input signals of different frequency bands received by the corresponding array surface, one path is for the input signal of the receiver in the same frequency band in the current quadrant, and the other path is for the multiplexed input signal of other quadrants in the same frequency band, the multiplexed input signal of other quadrants in the same frequency band is transmitted to the SPST switch, and the input signal of the receiver in the same frequency band in the current quadrant is transmitted to the attenuator; The SPST switch is used to receive the multiplexed input signals of other quadrants in the same frequency band output by the first power divider, and to select the multiplexed input signals of other quadrants in the same frequency band and then transmit them to the first equalizer; The first equalizer is used to adjust the frequency components of the multiplexed input signals in other quadrants of the same frequency band output by the SPST switch, compensate for the attenuation or phase change caused by channel characteristics during transmission, and transmit the signals to the combiner; a combiner, configured to perform frequency band fusion on other quadrant multiplexed input signals of different frequency bands output by the first equalizers to obtain a fused signal, and transmit the fused signal to the first amplifier; The first amplifier is used to amplify the power of the fused signal output by the combiner to obtain the multiplexed input signal of other quadrants and transmit it to the second SPDT switch; an attenuator, configured to receive the input signal of the receiver in the same frequency band as output by the first power divider, reduce the signal strength of the input signal of the receiver in the same frequency band, and transmit the signal to the second equalizer; A second equalizer is used to adjust the frequency component of the input signal of the receiver in the same frequency band as the attenuator output, compensate for the attenuation or phase change caused by the channel characteristics during the transmission process, and transmit it to the first SPDT switch; The first SPDT switch is used to select the input signal of the receiver in the same frequency band output by the second equalizer and transmit it to the second amplifier; and is used to select the signals of different frequency bands of other arrays output by the second power divider and transmit them to the second amplifier; The second amplifier is used to amplify and output the power of the input signal of the current quadrant receiver in the same frequency band output by the first SPDT switch and the signals of different frequency bands in other arrays; The second SPDT switch is used to select the multiplexed input signals of other quadrants output by the first amplifier and transmit them to the array multiplexed signal branching component; and is used to receive and select the multiplexed input signals of other quadrants of other arrays transmitted by the array multiplexed signal branching component and transmit them to the third amplifier; The third amplifier is used to amplify the power of the multiplexed input signals of other quadrants of other arrays output by the second SPDT switch and transmit them to the second power divider; The second power divider receives the multiplexed input signals of other quadrants of other array surfaces output by the third amplifier, divides them according to different frequency bands, obtains signals of different frequency bands of other array surfaces, and transmits the signals of different frequency bands of other array surfaces to the corresponding first SPDT switches.

2. The radio frequency array multiplexing device for passive reconnaissance according to claim 1, characterized in that: The array face 1 array face multiplexing front end component, the array face 2 array face multiplexing front end component, the array face 3 array face multiplexing front end component and the array face 4 array face multiplexing front end component are respectively connected to the array face multiplexing signal branching component through bidirectional transmission cables; Array 1 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into first quadrant receiver input signals and other quadrant multiplexing input signals; output the first quadrant receiver input signals; perform frequency band fusion on the other quadrant multiplexing input signals and then transmit them to the array multiplexing signal branching component; the other quadrant multiplexing input signals include second quadrant multiplexing input signals, third quadrant multiplexing input signals and fourth quadrant multiplexing input signals; Array 2 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into second quadrant receiver input signals and other quadrant multiplexing input signals; output the second quadrant receiver input signals; perform frequency band fusion on the other quadrant multiplexing input signals and then transmit them to the array multiplexing signal branching component; the other quadrant multiplexing input signals include the first quadrant multiplexing input signals, the third quadrant multiplexing input signals and the fourth quadrant multiplexing input signals; Array 3 array multiplexing front-end component, used to receive input signals of different frequency bands, divide the input signals of different frequency bands into the third quadrant receiver input signal and the other quadrant multiplexing input signal; output the third quadrant receiver input signal; perform frequency band fusion on the other quadrant multiplexing input signal and then pass it to the array multiplexing signal branching component; the other quadrant multiplexing input signal includes the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the fourth quadrant multiplexing input signal; The array 4 array multiplexing front-end component is used to receive input signals of different frequency bands, divide the input signals of different frequency bands into the fourth quadrant receiver input signal and the multiplexed input signals of other quadrants; output the fourth quadrant receiver input signal; perform frequency band fusion on the multiplexed input signals of other quadrants and then pass them to the array multiplexing signal branching component; the multiplexed input signals of other quadrants include the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the third quadrant multiplexing input signal.

3. The radio frequency array multiplexing device for passive reconnaissance according to claim 1, characterized in that: The array multiplexing signal branching component includes an array 1 SPDT switch, an array 1 power splitter, an array 1 SP3T switch, an array 1 amplifier, an array 2 SPDT switch, an array 2 power splitter, an array 2 SP3T switch, an array 2 amplifier, an array 3 SPDT switch, an array 3 power splitter, an array 3 SP3T switch, an array 3 amplifier, an array 4 SPDT switch, an array 4 power splitter, an array 4 SP3T switch and an array 4 amplifier; The array 1 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 1 array multiplexing front-end component, and transmit them to the array 1 power splitter; it is used to receive and select the first quadrant multiplexing input signal output by the array 1 amplifier, and transmit it to the array 1 array multiplexing front-end component; The array face 1 power splitter is used to split the other quadrant multiplexing input signals output by the array face 1 SPDT switch into the second quadrant multiplexing input signal, the third quadrant multiplexing input signal, and the fourth quadrant multiplexing input signal; transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch; The array plane 1 SP3T switch is used to receive and select the first quadrant multiplexed input signal transmitted by the array plane 2 power divider and / or the array plane 3 power divider and / or the array plane 4 power divider; The array 1 amplifier is used to amplify the power of the first quadrant multiplexed input signal output by the array 1 SP3T switch and transmit it to the array 1 SPDT switch; The array 2 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 2 array multiplexing front-end component, and transmit them to the array 2 power splitter; it is used to receive and select the second quadrant multiplexing input signal output by the array 2 amplifier, and transmit it to the array 2 array multiplexing front-end component; The array face 2 power splitter is used to split the other quadrant multiplexing input signals output by the array face 2 SPDT switch into the first quadrant multiplexing input signal, the third quadrant multiplexing input signal and the fourth quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch; The array 2SP3T switch is used to receive and select the second quadrant multiplexed input signal transmitted by the array 1 power divider and / or the array 3 power divider and / or the array 4 power divider; The array 2 amplifier is used to power amplify the second quadrant multiplexed input signal output by the array 2 SP3T switch and transmit it to the array 2 SPDT switch; The array 3 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 3 array multiplexing front-end component, and transmit them to the array 3 power splitter; it is used to receive and select the third quadrant multiplexing input signal output by the array 3 amplifier, and transmit it to the array 3 array multiplexing front-end component; The array face 3 power splitter is used to split the other quadrant multiplexing input signals output by the array face 3 SPDT switch into the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the fourth quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, and transmit the fourth quadrant multiplexing input signal to the array face 4 SP3T switch; The array face 3SP3T switch is used to receive and select the third quadrant multiplexed input signal transmitted by the array face 1 power divider and / or the array face 2 power divider and / or the array face 4 power divider; The array face 3 amplifier is used to amplify the power of the third quadrant multiplexed input signal output by the array face 3SP3T switch and transmit it to the array face 3SPDT switch; The array 4 SPDT switch is used to receive and select the other quadrant multiplexing input signals output by the array 4 array multiplexing front-end component, and transmit them to the array 4 power splitter; it is used to receive and select the fourth quadrant multiplexing input signal output by the array 4 amplifier, and transmit it to the array 4 array multiplexing front-end component; The array face 4 power splitter is used to split the other quadrant multiplexing input signals output by the array face 4 SPDT switch into the first quadrant multiplexing input signal, the second quadrant multiplexing input signal and the third quadrant multiplexing input signal, and transmit the first quadrant multiplexing input signal to the array face 1 SP3T switch, transmit the second quadrant multiplexing input signal to the array face 2 SP3T switch, and transmit the third quadrant multiplexing input signal to the array face 3 SP3T switch; The array 4SP3T switch is used to receive and select the fourth quadrant multiplexed input signal transmitted by the array 1 power divider and / or the array 2 power divider and / or the array 3 power divider; The array 4 amplifier is used to power amplify the fourth quadrant multiplexed input signal output by the array 4 SP3T switch and transmit it to the array 4 SPDT switch.

4. A radio frequency array multiplexing method for passive reconnaissance, implemented based on a radio frequency array multiplexing device for passive reconnaissance according to any one of claims 1 to 3, characterized in that: The method comprises: Step 1: The array multiplexing front-end component of array face 1 receives input signals of different frequency bands, inputs the signals of the same frequency band among the input signals of different frequency bands into the same first power divider, and splits the signals into two paths, thereby obtaining the receiver input signal of the same frequency band in the current quadrant and the multiplexed input signals of the same frequency band in other quadrants; Step 2: The input signal of the current quadrant receiver of the same frequency band is processed by the attenuator and the second equalizer in sequence, and then is selected by the first SPDT switch. The second amplifier amplifies the power of the selected input signal of the current quadrant receiver of the same frequency band and outputs it; Step 3: After the SPST switch is selected, the multiplexed input signals of other quadrants in the same frequency band are passed to the first equalizer. The first equalizer adjusts the frequency components and then passes them to the combiner. The combiner performs frequency band fusion on the multiplexed input signals of other quadrants in the same frequency band to obtain a fused signal, and passes it to the first amplifier. The first amplifier amplifies the power of the fused signal to obtain multiplexed input signals of other quadrants. After the second SPDT switch is selected, the multiplexed input signals of other quadrants are passed to the array 1 SPDT switch in the array multiplexing signal branching component. Step 4: The array face 1 SPDT switch receives the multiplexed input signals of other quadrants and transmits them to the array face 1 power splitter. The array face 1 power splitter splits the multiplexed input signals of other quadrants into the second quadrant multiplexed input signals, the third quadrant multiplexed input signals, and the fourth quadrant multiplexed input signals. The second quadrant multiplexed input signals are transmitted to the array face 2 SP3T switch, the third quadrant multiplexed input signals are transmitted to the array face 3 SP3T switch, and the fourth quadrant multiplexed input signals are transmitted to the array face 4 SP3T switch. Step 5: If the second-quadrant multiplexing input signal is to be multiplexed to the array 2 array multiplexing front-end component, the array 2 SP3T switch selects the second-quadrant multiplexing input signal. The second-quadrant multiplexing input signal passes through the array 2 amplifier and the array 2 SPDT switch in sequence. The array 2 SPDT switch selects the second-quadrant multiplexing input signal and then passes it to the second SPDT switch in the array 2 array multiplexing front-end component. The second SPDT switch passes the second-quadrant multiplexing input signal to the third amplifier and the second power divider in sequence. The second power divider splits the second-quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are then output. If the third-quadrant multiplexing input signal is to be multiplexed to the array 3 array multiplexing front-end component, the array 3 SP3T switch selects the third-quadrant multiplexing input signal, and the third-quadrant multiplexing input signal passes through the array 3 amplifier and the array 3 SPDT switch in sequence. The array 3 SPDT switch selects the third-quadrant multiplexing input signal and then transmits it to the second SPDT switch in the array 3 array multiplexing front-end component; the second SPDT switch transmits the third-quadrant multiplexing input signal to the third amplifier and the second power divider in sequence, and the second power divider splits the second-quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are then output; If the fourth quadrant multiplexing input signal is to be multiplexed to the array 4 array multiplexing front-end component, the array 4 SP3T switch selects the fourth quadrant multiplexing input signal, and the fourth quadrant multiplexing input signal passes through the array 4 amplifier and the array 4 SPDT switch in sequence. The array 4 SPDT switch selects the fourth quadrant multiplexing input signal and then passes it to the second SPDT switch in the array 4 array multiplexing front-end component; the second SPDT switch passes the fourth quadrant multiplexing input signal to the third amplifier and the second power divider in sequence, and the second power divider divides the second quadrant multiplexing input signal into signals of different frequency bands. The signals of different frequency bands pass through the first SPDT switch and the second amplifier in sequence and are output.

5. The radio frequency array multiplexing method for passive reconnaissance according to claim 4, characterized in that: The array face 1 multiplexing front-end component in step 1 can also be the array face 2 multiplexing front-end component, the array face 3 multiplexing front-end component, or the array face 4 multiplexing front-end component, so as to realize the multiplexing of the signal received by any array face multiplexing front-end component to the other three array face multiplexing front-end components.

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