KR102112186B1 - Active array radar apparatus and performance test method using the same - Google Patents

Abstract

The present invention relates to an active array radar apparatus and a performance test method using the same and, more specifically, to a full-digital active array radar apparatus simulating a real environment to test performance and a performance test method using the same. According to one embodiment of the present invention, the active array radar apparatus comprises: a plurality of array elements for receiving a signal; a plurality of conversion units for converting a reception signal inputted from the plurality of array elements into a digital reception signal; a synthesis unit for generating a first beam signal from the digital reception signal inputted from the plurality of conversion units; a beam control unit for generating a second beam signal from the first beam signal inputted from the synthesis unit; a signal processing unit for processing the second beam signal inputted from the beam control unit to extract target information; and a simulation signal input unit for inputting a simulation signal to the signal processing unit.

Description

ACTIVE ARRAY RADAR APPARATUS AND PERFORMANCE TEST METHOD USING THE SAME

The present invention relates to an active array radar device and a performance test method using the same, and more particularly, to an active array radar device and a performance test method using the same for simulating a real environment.

A radar device emits electromagnetic waves to a target using an antenna having high directivity, and then receives a reflected wave reflected from the target to obtain target information such as a distance to the target, direction, and shape of the target. to be.

With the development of radar technology, the antenna used for radar has also evolved from passive to active. In addition, a radar device using such an active antenna has also developed into a digital active array radar that synthesizes digital beams in individual element units or sub-array units in the form of beams in the existing analog method.

Recently, in the case of an active array radar device developed in Korea, for high directivity and low side level, fast beam scanning and low power characteristics, the received signal is converted into an I / Q (In phase / Quadrature phase) digital signal in individual element units. It uses a fully digital method of converting and synthesizing beams. On the other hand, in the case of a radar device, it is necessary to have a performance test mode function in order to simulate the real environment and to verify the performance from time to time, and in this case, the performance test mode needs to be simulated to the same level as the actual operating conditions of the equipment. However, research on a fully digital active array radar device having a performance test mode suitable for a full digital system is still incomplete.

KR 10-2010-0079715 A

The present invention provides an active array radar device capable of performing a performance test with a structure suitable for a fully digital method and a performance test method using the same.

Active array radar device according to an embodiment of the present invention, a plurality of array elements for receiving a signal; A plurality of conversion units for converting a received signal input from the plurality of array elements into a digital received signal; A synthesis unit for generating a first beam signal from digital reception signals input from the plurality of conversion units; A beam control unit for generating a second beam signal from the first beam signal input from the synthesis unit; A signal processing unit for processing the second beam signal input from the beam control unit to extract target information; And a simulated signal input unit for inputting a simulated signal to the signal processing unit.

In addition, the active array radar device according to an embodiment of the present invention, a plurality of array elements for receiving a signal; A plurality of conversion units connected to the plurality of array elements to convert received signals input from the array elements into digital reception signals; A synthesis unit connected to the plurality of conversion units to generate a first beam signal from a digital received signal input from each conversion unit; A beam control unit connected to the synthesis unit to generate a second beam signal from a first beam signal input from the synthesis unit; A signal processing unit connected to the beam control unit to process a second beam signal input from the beam control unit and extract target information; And a simulation signal input unit connected between the beam control unit and the signal processing unit to input a simulated signal to the signal processing unit.

The simulated signal may include a digital signal.

The synthesis unit may be provided in plural, and the beam control unit may generate a second beam signal by merging the first beam signals input from the plurality of synthesis units.

The simulation signal input unit, a simulation signal generation unit for generating a simulation signal; And an input control unit provided on each of a plurality of connection paths connecting the beam control unit and the signal processing unit, and providing a simulated signal generated from the simulation signal generation unit to the signal processing unit.

The input controller may selectively provide a second beam signal input from the beam controller and a simulated signal generated from the simulated signal generator to the signal processor.

The input control unit may include a mixing unit for merging the second beam signal input from the beam control unit and the simulated signal generated by the simulation signal generation unit; And a switching unit for selectively connecting the beam control unit, the simulated signal generation unit, and the mixing unit to the signal processing unit.

The input control unit may include a first storage unit provided between the beam control unit and the mixing unit to store a second beam signal input from the beam control unit; A second storage unit provided between the simulation signal generation unit and the mixing unit to store simulated signals generated from the simulation signal generation unit; And a third storage unit provided between the switching unit and the signal processing unit.

In addition, the performance test method according to an embodiment of the present invention converts a received signal into a digital received signal and sequentially generates and processes a first beam signal and a second beam signal from the digital received signal. A method for testing the performance of a device, comprising: generating a simulated signal; And a process of inputting the simulated signal, wherein the process of inputting the simulated signal inputs the simulated signal through a path through which the second beam signal is input.

The process of generating the simulated signal may include: generating a digital signal; And converting the digital signal into an optical signal.

In the process of inputting the simulated signal, the simulated signal may be merged and input to the second beam signal.

The simulated signal may include at least one of a simulated target signal simulating a target and a simulated clutter signal simulating a clutter.

According to an active array radar device and a performance test method using the same according to an embodiment of the present invention, it is possible to verify a function of a radar device by various environments or signals before target tracking of the radar device, thereby minimizing technical errors.

In addition, by using a digital signal as a simulated signal that simulates a target or clutter, it is possible to omit the digital conversion process within the simulated signal input unit, and the accuracy of the signal increases as the conversion process is omitted, thereby testing the performance of the radar device in various ways. can do.

1 is a view showing a schematic view of a fully digital active array radar device according to an embodiment of the present invention.
2 is a view showing a schematic view of an input control unit according to an embodiment of the present invention.
3 is a view showing a schematic view of a fully digital active array radar device according to another embodiment of the present invention.
4 is a view showing a schematic view of an input control unit according to another embodiment of the present invention.
5 is a view showing a schematic view of a fully digital active array radar device according to another embodiment of the present invention.
6 is a view showing a schematic view of an input control unit according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the embodiments of the present invention allow the disclosure of the present invention to be complete, and the scope of the invention to those skilled in the art It is provided to inform you completely. The drawings may be exaggerated to illustrate the invention in detail, and the same reference numerals in the drawings refer to the same elements.

The phased array radar arranges several elements and transmits / receives radio waves having different phases to concentrate the direction of radio waves to obtain target information. The fully digital active array radar has many advantages over the analog beam forming method using a conventional analog type displacement device using a full digital beam forming method, and a digital beam forming method using a digital displacement device and applying the sub-array concept. That is, the full digital active array radar has significantly improved sensitivity than the active array radar of the sub-array concept. In addition, since multiple beams can be formed on a device basis, multiple beams can be made without deterioration of multibeam performance.

1 is a view showing a schematic view of a fully digital active array radar device according to an embodiment of the present invention, and FIG. 2 is a view showing a schematic view of an input control section according to an embodiment of the present invention.

1 and 2, a fully digital active array radar apparatus according to an embodiment of the present invention includes a plurality of array elements 100 for receiving signals, and a received signal input from the plurality of array elements 100. A plurality of conversion unit 300 for converting to a digital received signal, the synthesis unit 400 for generating a first beam signal from the digital reception signal input from the plurality of conversion unit 300, the synthesis unit 400 ), A beam control unit 500 for generating a second beam signal from the first beam signal, and a signal processing unit 600 for processing the second beam signal input from the beam control unit 500 to extract target information And a simulation signal input unit 700 for inputting a simulation signal to the synthesis unit 400.

That is, the fully digital active array radar apparatus according to an embodiment of the present invention is a plurality of array elements 100 for receiving a signal, each connected to the plurality of array elements 100 input from each array element 100 Generating a first beam signal from a plurality of conversion units 300 for converting the received signal into a digital reception signal, the digital reception signal connected to the plurality of conversion units 300 input from each conversion unit 300 Synthesis unit 400, the beam control unit 500 and the plurality of conversion units for generating a second beam signal from the first beam signal input from the synthesis unit 400 is connected to the synthesis unit 400 ( 300) and a synthesis unit 400 may include a simulation signal input unit 700 for inputting a simulation signal to the synthesis unit 400.

The plurality of array elements 100 serves as an antenna for transmitting and receiving signals. The array elements 100 may be provided in hundreds to thousands, and electronic beamforming and beam-steering are possible by individually controlling the array elements 100. At this time, the array elements 100 may be disposed adjacent to each other in a flat shape.

Each array element 100 may be composed of a radiation element and a transmit / receive module (TRM). Generally, a single transmission / reception module (TRM) is disposed at the rear of each radiation element to be connected to each other. With respect to the array element 100, a structure applied to a general active array radar may be applied in the same manner, so a detailed description thereof will be omitted.

The fully digital active array radar apparatus according to an embodiment of the present invention may further include an amplifying unit 200. The amplifying unit 200 may include a low noise amplifier (LNA) composed of an amplifying circuit or the like, and serves to amplify a signal input from the array element 100. The amplifying unit 200 may be provided in the same number as the plurality of arraying elements 100 so that each amplifying unit 200 is connected to each arraying element 100.

The conversion unit 300 converts a received signal input from the plurality of array elements 100 into a digital received signal. The signal input from the plurality of array elements 100, and more specifically, the signal input from the plurality of array elements 100 and input through the amplification unit 200 to the conversion unit 300 is an analog signal. The conversion unit 300 converts the analog-type received signal into a digital-type digital received signal. The conversion unit 300 is provided in the same number as the plurality of array elements 100, so that each conversion unit 300 is connected to each array element 100 or each amplification unit 200 connected to each array element 100. It may have a structure to be connected.

Here, the conversion unit 300 may generate a digital reception signal by sampling the input reception signal at predetermined time intervals. In this case, the digital reception signal may be an intermediate frequency (IF) signal in which the received high frequency (RF) signal is down-converted at least once, or in some cases, a high frequency (RF) signal. That is, the received signal input from the array element 100 is an analog received signal, and the samples generated as a result of sampling are discrete signals in the time domain, quantized every sampling time, and converted into digital bits of a predetermined bit.

The synthesis unit 400 generates a first beam signal from digital reception signals input from the plurality of conversion units 300. The fully digital active array radar performs spatial processing on a digital received signal from the converter 300. That is, the fully digital active array radar first samples the received signals from the plurality of array elements 100 and then converts the received signals received from each array element 100 into a digital received signal in digital form by the converter 300. To convert. The result value in this process is a set of received signals having different directions in space. At this time, the synthesis unit 400 may be provided in a smaller number than the plurality of conversion unit 300. That is, the synthesis unit 400 may generate a first beam signal from a digital received signal input from some of the conversion units 300 among the plurality of conversion units 300. For example, when a plurality of array elements 100, a plurality of amplification units 200, and a plurality of conversion units 300 are provided in M × N pieces, the synthesis unit 400 is provided in N pieces and M conversion units ( The first beam signal may be generated from the digital received signal input from 300). At this time, the synthesis unit 400 extracts a received signal having a specific direction from a set of received signals having different directions to generate a first beam signal. For example, the synthesis unit 400 may generate a first beam signal by extracting received signals having directions of 10 °, 20 °, ..., 360 °, respectively.

The beam control unit 500 generates a second beam signal from the first beam signal input from the synthesis unit 400. As described above, a plurality of synthesis units 400 may be provided, and the beam control unit 500 may generate a second beam signal by merging the first beam signals input from the plurality of synthesis units 400. . That is, the received signals input from the plurality of array elements 100 are distributed to the plurality of synthesis units 400 and input. Here, when the array elements 100 are provided in M × N pieces, the synthesis unit 400 may be provided in N pieces, and the M array elements 100 and the conversion unit 300 are provided in each synthesis unit 400. Through this, M digital reception signals may be input. In this case, the synthesizing unit 400 may classify the M digital reception signals into digital reception signals having L directions to generate a first beam signal. As described above, when the first beam signals having the L directions are generated by the respective synthesis units 400, the beam controller 500 merges the first beam signals having the same direction to generate the L second beam signals. That is, the first beam signal refers to a beam signal that classifies digital received signals input from the M array elements 100 according to directions, and the second beam signal is a first beam signal input from each synthesis unit 400. By combining, it means a beam signal that classifies digital received signals input from M × N array elements 100 according to directions.

In a fully digital active array radar according to an embodiment of the present invention, the simulated signal input unit 700 is connected between the plurality of conversion units 300 and the synthesis unit 400 to input a simulation signal to the synthesis unit 400. At this time, the simulated signal input unit 700 is provided in each of a plurality of connection paths connecting the simulation signal generator 710 for generating a simulated signal and the plurality of converters 300 and the synthesizer 400, respectively The input control unit 730 may provide a simulation signal generated from the signal generation unit 710 to the synthesis unit 400.

The simulated signal generator 710 generates a simulated signal. Here, the simulated signal may include at least one of a simulated target signal simulating a target and a simulated clutter signal simulating a clutter. That is, the simulated signal may be a simulated target signal or a clutter signal, and may include both a simulated target signal and a simulated clutter signal. In this way, since the simulated signal includes not only a simulated target signal but also a simulated clutter signal, it is possible to perform a performance test in consideration of not only the target detection performance of the radar device, but also the influence of the clutter by terrain features outside the target.

Also, the simulated signal generator 710 generates a simulated signal as a digital signal having a digital format. That is, the simulated signal generator 710 generates a digital signal, directly inputs the generated digital signal to the synthesizer 400 through the input controller 730, which will be described later, or converts the digital signal into an optical signal and synthesizes it. It can be input to the negative 400. When a digital signal is converted into an optical signal and input to the synthesis unit 400, loss of the signal can be prevented and the transmission speed of the signal can be improved.

The input control unit 730 may selectively provide the digital reception signal input from the conversion unit 300 and the simulation signal generated by the simulation signal generation unit 710 to the synthesis unit 400. That is, the input control unit 730 provides only the digital reception signal input from the conversion unit 300 to the synthesis unit 400, or only the simulation signal generated from the simulation signal generation unit 710 to the synthesis unit 400, or , The digital reception signal input from the conversion unit 300 and the simulation signal generated from the simulation signal generation unit 710 may be merged and provided to the synthesis unit 400.

To this end, the input control unit 730 includes a mixing unit 731 and a conversion unit 300 for merging the digital received signal input from the conversion unit 300 and the simulation signal generated from the simulation signal generation unit 710, A conversion unit 733 for selectively connecting the simulation signal generation unit 710 and the mixing unit 731 to the synthesis unit 400 may be included. Here, the mixing unit 731 may be composed of a mixer or the like, and may merge the digital received signal input from the conversion unit 300 and the simulated signal generated from the simulated signal generation unit 710. In addition, the switching unit 733 is composed of a switch (switch) and the like, the conversion unit 300, the simulated signal generation unit 710 and the mixing unit 731 can be selectively connected to the synthesis unit 400. For example, when the conversion unit 733 is connected to the conversion unit 300, only the digital received signal input from the conversion unit 300 is provided to the synthesis unit 400, and the conversion unit 733 generates a simulated signal When connected to the unit 710, only the simulated signal input from the simulation signal generation unit 710 is provided to the synthesis unit 400, and when the switching unit 733 is connected to the mixing unit 731, the digital received signal and The combined signal of the simulated signal is provided to the synthesis unit 400.

As described above, the input control unit 730 includes a mixing unit 731 for merging the digital reception signal and the simulated signal, so that the fully digital active array radar apparatus according to an embodiment of the present invention receives a digital reception signal from an actual target. You can test the performance of a radar device by merging with and simulated signals, in which case the radar device's performance to track multiple targets, including real and virtual targets, and radar to track real targets in a virtual clutter environment. It will effectively test the performance of the device, the performance of the radar device to track virtual targets in a real clutter environment, and so on.

At this time, the input control unit 730 is provided between the conversion unit 300 and the mixing unit 731, the first storage unit 735 for storing the digital received signal input from the conversion unit 300, the simulation signal The second storage unit 737 and the switching unit 733 and the synthesis unit 400 provided between the generation unit 710 and the mixing unit 731 to store the simulated signal generated from the simulation signal generation unit 710. ) It may include a third storage unit 739 provided between. The first storage unit 735 may temporarily store the digital received signal input from the conversion unit 300. That is, the first storage unit 735 may function as a buffer between the conversion unit 300 and the synthesis unit 400. The second storage unit 737 stores the simulated signal generated from the simulated signal generator 710. Various types of simulated target signals and simulated clutter signals generated from the simulated signal generator 710 may be stored in the second storage unit 737, and various types of simulated target signals stored in the second storage unit 737 may be stored. And a simulated clutter signal may be provided to the synthesizer 400. Also, the third storage unit 739 may temporarily store a signal transmitted through the switching unit 733. That is, the third storage unit 739 functions as a buffer between the switching unit 733 and the synthesis unit 400 in the same manner as the first storage unit 735.

As described above, when the simulation signal input unit 700 is connected between the plurality of conversion units 300 and the synthesis unit 400, the simulation signal input unit 700 is connected to the synthesis unit 400 at the rear end of the conversion unit 300. It is possible to input a digital signal of the baseband. Accordingly, the simulated signal input unit 700 inputs a simulated signal that simulates the digital received signal input from the array element 100 and the conversion unit 300 before forming the beam signal, whereby the full digital active array radar It is possible to test the performance of the entire structure from the receiving end to the signal processing end.

Hereinafter, a performance test method using a fully digital active array radar device according to an embodiment of the present invention will be described. In the description of the performance test method using the all-digital active array radar device according to an embodiment of the present invention, the description overlapping with the above-described description with respect to the all-digital active array radar device according to an embodiment of the present invention It will be omitted.

A performance test method using a fully digital active array radar apparatus according to an embodiment of the present invention converts a received signal into a digital received signal, and sequentially generates and processes a first beam signal and a second beam signal from the digital received signal As a performance test method of a fully digital active array radar device, including a process of generating a simulated signal and a process of inputting the simulated signal, the process of inputting the simulated signal is performed through a path through which the digital received signal is input. Input a simulated signal.

As described above, in the case of a fully digital active array radar device according to an embodiment of the present invention, each array element is connected to a plurality of array elements 100 and a plurality of array elements 100 for receiving signals. A plurality of conversion units 300 for converting the received signal input from the (100) to a digital received signal, the first connection from the digital received signal connected to the plurality of conversion unit 300 input from each conversion unit 300 It includes a synthesis unit 400 for generating a beam signal and a beam control unit 500 connected to the synthesis unit 400 to generate a second beam signal from a first beam signal input from the synthesis unit 400. In this case, the simulated signal input unit 700 is connected between the plurality of conversion units 300 and the synthesis unit 400 to input a simulated signal to the synthesis unit 400.

The simulated signal input unit 700 is provided in each of a plurality of connection paths connecting the simulated signal generation unit 710 and the plurality of conversion units 300 and the synthesis unit 400 to generate a simulated signal, and generating the simulated signal It may include an input control unit 730 that provides a simulation signal generated from the unit 710 to the synthesis unit 400, wherein the process of generating the simulation signal is performed by the simulation signal generation unit 710, The process of inputting the simulated signal may be performed by the input controller 730.

In the process of generating a simulated signal, a digital signal may be generated, and a digital signal may be directly input to the synthesis unit 400, or a digital signal may be converted into an optical signal and input to the synthesis unit 400. When a digital signal is converted into an optical signal and input to the synthesis unit 400, the loss of the signal can be prevented and the transmission speed can be improved. Therefore, the process of generating the simulated signal includes the process of generating the digital signal and the digital signal. And converting to an optical signal.

In addition, as described above, the input control unit 730 is a mixing unit 731 and a conversion unit 300 for merging the digital received signal input from the conversion unit 300 and the simulation signal generated from the simulation signal generation unit 710. ), A conversion unit 733 for selectively connecting the simulated signal generation unit 710 and the mixing unit 731 to the synthesis unit 400. Accordingly, in the process of inputting the simulated signal, only the digital received signal may be input to the synthesizer 400, only the simulated signal may be input to the synthesizer 400, or the simulated signal may be merged and input to the digital received signal. . As described above, in the process of inputting the simulation signal, when the simulation signal is merged with the digital reception signal and input to the synthesis unit 400, not only the target detection performance of the radar device but also the effect of clutter due to terrain features other than the target is considered. Performance tests can be performed.

3 is a view showing a schematic view of a fully digital active array radar device according to another embodiment of the present invention, and FIG. 4 is a view showing a schematic view of an input control section according to another embodiment of the present invention.

3 and 4, a fully digital active array radar apparatus according to another embodiment of the present invention includes a plurality of array elements 100 for receiving signals, and a received signal input from the plurality of array elements 100. A plurality of conversion unit 300 for converting to a digital received signal, the synthesis unit 400 for generating a first beam signal from the digital reception signal input from the plurality of conversion unit 300, the synthesis unit 400 ), A beam control unit 500 for generating a second beam signal from the first beam signal, and a signal processing unit 600 for processing the second beam signal input from the beam control unit 500 to extract target information And a simulation signal input unit 700 for inputting a simulation signal to the beam control unit 500.

That is, the fully digital active array radar apparatus according to another embodiment of the present invention is a plurality of array elements 100 for receiving a signal, each of which is connected to the plurality of array elements 100 input from each array element 100 Generating a first beam signal from a plurality of conversion units 300 for converting the received signal into a digital reception signal, the digital reception signal connected to the plurality of conversion units 300 input from each conversion unit 300 Synthesis unit 400 for, the beam control unit 500 and the synthesis unit 400 for generating a second beam signal from the first beam signal input from the synthesis unit 400 is connected to the synthesis unit 400 And a beam control unit 500 to include a simulation signal input unit 700 for inputting a simulation signal to the beam control unit 500.

The configuration of the array element 100, the conversion unit 300, the synthesis unit 400, the beam control unit 500, and the signal processing unit 600 of the all-digital active array radar device according to another embodiment of the present invention is described above. It is the same as the fully digital active array radar device according to an embodiment of the present invention, and only the connection location of the simulated signal input unit 700 and the transmission path of the simulated signal are different. Hereinafter, the differences will be mainly described.

In a fully digital active array radar according to another embodiment of the present invention, the simulated signal input unit 700 is connected between the synthesis unit 400 and the beam control unit 500 to input a simulated signal to the beam control unit 500. At this time, the simulation signal input unit 700 is provided in each of a plurality of connection paths connecting the simulation signal generation unit 710 and the synthesis unit 400 and the beam control unit 500 to generate a simulation signal, generating the simulation signal An input control unit 730 that provides a simulation signal generated from the unit 710 to the beam control unit 500 may be included.

The input control unit 730 may selectively provide the first beam signal input from the synthesis unit 400 and the simulated signal generated by the simulation signal generation unit 710 to the beam control unit 500. That is, the input control unit 730 provides only the first beam signal input from the synthesis unit 400 to the beam control unit 500 or only the simulated signal generated by the simulation signal generation unit 710 to the beam control unit 500. Alternatively, the first beam signal input from the synthesis unit 400 and the simulation signal generated from the simulation signal generation unit 710 may be merged and provided to the beam control unit 500.

To this end, the input control unit 730 is a mixing unit 731 and a synthesis unit 400 for merging the first beam signal input from the synthesis unit 400 and the simulation signal generated from the simulation signal generation unit 710, The simulation signal generation unit 710 and the mixing unit 731 may include a switching unit 733 for selectively connecting the beam control unit 500. Here, the mixing unit 731 may be composed of a mixer or the like, and may merge the first beam signal input from the synthesis unit 400 and the simulation signal generated from the simulation signal generation unit 710. In addition, the switching unit 733 is composed of a switch (switch) and the like, the synthesis unit 400, the simulated signal generation unit 710 and the mixing unit 731 and the synthesis unit 400 can be selectively connected. For example, when the switching unit 733 is connected to the combining unit 400, only the first beam signal input from the combining unit 400 is provided to the beam control unit 500, and the switching unit 733 simulates the signal. When connected to the generator 710, only the simulated signal input from the simulated signal generator 710 is provided to the beam control unit 500, and when the switching unit 733 is connected to the mixing unit 731, the first beam The signal obtained by combining the signal and the simulated signal is provided to the beam controller 500.

At this time, the input control unit 730 is provided between the synthesis unit 400 and the mixing unit 731, the first storage unit 735 for storing the first beam signal input from the synthesis unit 400, the simulation The second storage unit 737 and the switching unit 733 and the beam control unit provided between the signal generation unit 710 and the mixing unit 731 to store the simulated signal generated from the simulation signal generation unit 710 500) may be provided between the third storage unit 739. The first storage unit 735 may temporarily store the first beam signal input from the synthesis unit 400. That is, the first storage unit 735 may function as a buffer between the synthesis unit 400 and the mixing unit 731. The second storage unit 737 stores the simulated signal generated from the simulated signal generator 710. Various types of simulated target signals and simulated clutter signals generated from the simulated signal generator 710 may be stored in the second storage unit 737, and various types of simulated target signals stored in the second storage unit 737 may be stored. And a simulated clutter signal may be provided to the synthesizer 400. Also, the third storage unit 739 may temporarily store a signal transmitted through the switching unit 733. That is, the third storage unit 739 functions as a buffer between the switching unit 733 and the beam control unit 500 in the same manner as the first storage unit 735.

As described above, when the simulation signal input unit 700 is connected between the synthesis unit 400 and the beam control unit 500, the simulation signal input unit 700 inputs a digital signal that simulates the first beam signal from the digital beam synthesis terminal. I can do it. In this case, it is possible to input a simulated signal after synthesizing the first beam signal, so there is no need to add or interlock a separate hardware board in the digital transmission / reception board, and the first beam is added only by adding software. It is possible to provide a simulated signal corresponding to the signal.

Hereinafter, a performance test method using a fully digital active array radar device according to another embodiment of the present invention will be described. In the description of the performance test method using the all-digital active array radar device according to another embodiment of the present invention, the description overlapping with the above-described description with respect to the all-digital active array radar device according to another embodiment of the present invention It will be omitted.

A performance test method using a fully digital active array radar device according to another embodiment of the present invention converts a received signal into a digital received signal and sequentially generates and processes a first beam signal and a second beam signal from the digital received signal. As a performance test method of a fully digital active array radar device, the method includes generating a simulated signal and inputting the simulated signal, and inputting the simulated signal is performed through a path through which the first beam signal is input. The simulation signal is input.

As described above, in the case of a fully digital active array radar device according to another embodiment of the present invention, a plurality of array elements 100 for receiving a signal, each array element connected to the plurality of array elements 100, respectively A plurality of conversion units 300 for converting the received signal input from the (100) to a digital received signal, the first connection from the digital received signal connected to the plurality of conversion unit 300 input from each conversion unit 300 It includes a synthesis unit 400 for generating a beam signal and a beam control unit 500 connected to the synthesis unit 400 to generate a second beam signal from a first beam signal input from the synthesis unit 400. At this time, the simulation signal input unit 700 is connected between the synthesis unit 400 and the beam control unit 500 to input a simulation signal to the beam control unit 500.

The simulated signal input unit 700 is provided on each of a plurality of connection paths connecting the simulated signal generation unit 710 and the synthesis unit 400 and the beam control unit 500 to generate a simulated signal, and the simulated signal generation unit ( It may include an input control unit 730 that provides a simulation signal generated from the 710 to the beam control unit 500, wherein the process of generating the simulation signal is performed by the simulation signal generation unit 710, the simulation signal The process of inputting may be performed by the input control unit 730.

In the process of generating a simulated signal, a digital signal may be generated, and a digital signal may be directly input to the beam control unit 500 or a digital signal may be converted into an optical signal and input to the beam control unit 500. When a digital signal is converted into an optical signal and input to the beam control unit 500, the loss of the signal can be prevented and the transmission speed can be improved. Therefore, the process of generating the simulated signal includes generating the digital signal and digital signal. And converting to an optical signal.

In addition, as described above, the input controller 730 combines the first beam signal input from the synthesizer 400 and the simulated signal generated from the simulated signal generator 710 and the synthesizer 731 and synthesizer ( 400), a switching unit 733 for selectively connecting the simulation signal generating unit 710 and the mixing unit 731 to the beam control unit 500. Accordingly, in the process of inputting the simulated signal, only the first beam signal is input to the beam control unit 500, only the simulated signal is input to the beam control unit 500, or the first beam signal is merged and input by the simulation signal. Can be. As described above, when the simulation signal is input to the beam control unit 500 by combining the simulation signal with the first beam signal in the process of inputting the simulation signal, not only the target detection performance of the radar device but also the influence of clutter due to terrain features other than the target is considered. This allows performance tests to be performed.

5 is a view showing a schematic view of a fully digital active array radar device according to another embodiment of the present invention, and FIG. 6 shows a schematic view of the input control section 730 according to another embodiment of the present invention It is a drawing.

5 and 6, a fully digital active array radar apparatus according to another embodiment of the present invention includes a plurality of array elements 100 for receiving signals, and inputs received from the plurality of array elements 100 A plurality of conversion units 300 for converting a signal into a digital reception signal, a synthesis unit 400 for generating a first beam signal from the digital reception signal input from the plurality of conversion units 300, the synthesis unit ( 400) a beam control unit 500 for generating a second beam signal from a first beam signal input from the 400, a signal processing unit 600 for processing the second beam signal input from the beam control unit 500 to extract target information ) And a simulated signal input unit 700 for inputting a simulated signal to the signal processing unit 600.

That is, the fully digital active array radar apparatus according to another embodiment of the present invention is a plurality of array elements 100 for receiving a signal, each connected to the plurality of array elements 100 from each array element 100 A plurality of converters 300 for converting an input received signal into a digital received signal, and connected to the plurality of converters 300 to generate a first beam signal from a digital received signal input from each converter 300 Synthesis unit 400 to be connected to the synthesis unit 400, the beam control unit 500 and the beam control unit 500 for generating a second beam signal from the first beam signal input from the synthesis unit 400 ) And a signal processing unit 600 to include a simulation signal input unit 700 for inputting a simulated signal to the signal processing unit 600.

The configuration of the array element 100, the conversion unit 300, the synthesis unit 400, the beam control unit 500 and the signal processing unit 600 of the all-digital active array radar device according to another embodiment of the present invention is described above It is the same as the fully digital active array radar device according to an embodiment or another embodiment of the present invention, and only the connection location of the simulated signal input unit 700 and the transmission path of the simulated signal are different, hereinafter, focusing on differences. I will explain.

In a fully digital active array radar according to another embodiment of the present invention, the simulated signal input unit 700 is connected between the beam control unit 500 and the signal processing unit 600 to input a simulated signal to the signal processing unit 600. At this time, the simulation signal input unit 700 is provided in each of a plurality of connection paths connecting the simulation signal generation unit 710 and the beam control unit 500 and the signal processing unit 600 for generating a simulation signal, generating the simulation signal It may include an input control unit 730 that provides the simulated signal generated from the unit 710 to the signal processing unit 600.

The input control unit 730 may selectively provide the second beam signal input from the beam control unit 500 and the simulated signal generated by the simulation signal generation unit 710 to the signal processing unit 600. That is, the input control unit 730 provides only the second beam signal input from the beam control to the signal processing unit 600, or only the simulated signal generated from the simulation signal generation unit 710 to the signal processing unit 600, or the beam The second beam signal input from the controller 500 and the simulated signal generated from the simulated signal generator 710 may be merged and provided to the signal processor 600.

To this end, the input control unit 730 includes a mixing unit 731 and a beam control unit 500 for merging the second beam signal input from the beam control unit 500 and the simulated signal generated by the simulation signal generation unit 710, The simulation unit 710 and the mixing unit 731 may include a switching unit 733 for selectively connecting the signal processing unit 600. Here, the mixing unit 731 may be composed of a mixer or the like, and may merge the second beam signal input from the beam control unit 500 and the simulated signal generated by the simulation signal generation unit 710. In addition, the switching unit 733 is composed of a switch (switch) and the like, the beam control unit 500, the simulation signal generation unit 710 and the mixing unit 731 and the signal processing unit 600 may be selectively connected. For example, when the switching unit 733 is connected to the beam control unit 500, only the second beam signal input from the beam control unit 500 is provided to the signal processing unit 600, and the switching unit 733 simulates the signal When connected to the generator 710, only the simulated signal input from the simulated signal generator 710 is provided to the signal processor 600, and when the switch 733 is connected to the mixer 731, the second beam The signal combined with the simulated signal is provided to the signal processor 600.

At this time, the input control unit 730 is provided between the beam control unit 500 and the mixing unit 731, the first storage unit 735 for storing the second beam signal input from the beam control unit 500, the simulation A second storage unit 737 and a switching unit 733 and a signal processing unit provided between the signal generation unit 710 and the mixing unit 731 to store the simulated signal generated from the simulation signal generation unit 710. 600) may include a third storage unit 739 provided between. The first storage unit 735 may temporarily store the second beam signal input from the beam control unit 500. That is, the first storage unit 735 may function as a buffer between the beam control unit 500 and the mixing unit 731. The second storage unit 737 stores the simulated signal generated from the simulated signal generator 710. Various types of simulated target signals and simulated clutter signals generated from the simulated signal generator 710 may be stored in the second storage unit 737, and various types of simulated target signals stored in the second storage unit 737 may be stored. And a simulated clutter signal may be provided to the synthesizer 400. Also, the third storage unit 739 may temporarily store a signal transmitted through the switching unit 733. That is, the third storage unit 739 functions as a buffer between the switching unit 733 and the signal processing unit 600 in the same manner as the first storage unit 735.

As described above, when the simulated signal input unit 700 is connected between the beam control unit 500 and the signal processing unit 600, the simulated signal input unit 700 inputs a digital signal that simulates the second beam signal from the digital beam synthesis terminal. I can do it. In this case, it is possible to input a simulated signal after synthesizing the second beam signal, so there is no need to add or interlock a separate hardware board in the digital transmission / reception board, and the first beam is added only by adding software. It is possible to provide a simulated signal corresponding to the signal. In addition, the number of simulated signals and the number of input controllers 730 for providing them can be minimized to simplify the equipment structure and improve manufacturing efficiency.

Hereinafter, a performance test method using a fully digital active array radar apparatus according to another embodiment of the present invention will be described. In the description of the performance test method using the all-digital active array radar device according to another embodiment of the present invention, it overlaps with the above-described content with respect to the all-digital active array radar device according to another embodiment of the present invention The description will be omitted.

A performance test method using a fully digital active array radar device according to another embodiment of the present invention converts a received signal into a digital received signal, and sequentially generates a first beam signal and a second beam signal from the digital received signal As a performance test method of a fully digital active array radar device, a process of generating a simulated signal and a process of inputting the simulated signal, wherein the process of inputting the simulated signal includes a path through which the second beam signal is input. The simulation signal is inputted through.

As described above, in the case of a fully digital active array radar device according to another embodiment of the present invention, each array is connected to a plurality of array elements 100 and a plurality of array elements 100 for receiving a signal, respectively. A plurality of converters 300 for converting a received signal input from the device 100 into a digital received signal, connected to the plurality of converters 300, the digital received signal input from each of the converter 300 The synthesis unit 400 for generating a beam signal and the beam control unit 500 connected to the synthesis unit 400 for generating a second beam signal from the first beam signal input from the synthesis unit 400 are provided. In this case, the simulated signal input unit 700 is connected between the beam control unit 500 and the signal processing unit 600 to input a simulated signal to the signal processing unit 600.

The simulated signal input unit 700 is provided on each of a plurality of connection paths connecting the simulated signal generation unit 710 and the beam control unit 500 and the signal processing unit 600 to generate a simulated signal, and the simulated signal generation unit ( It may include an input control unit 730 that provides a simulation signal generated from the 710 to the signal processing unit 600, wherein the process of generating a simulation signal is performed by the simulation signal generation unit 710, the simulation signal The process of inputting may be performed by the input control unit 730.

In the process of generating a simulated signal, a digital signal may be generated, and a digital signal may be directly input to the signal processing unit 600 or a digital signal may be converted into an optical signal and input to the signal processing unit 600. When a digital signal is converted into an optical signal and input to the signal processing unit 600, the loss of the signal can be prevented and the transmission speed can be improved. Therefore, the process of generating the simulated signal includes the process of generating the digital signal and the digital signal. And converting to an optical signal.

In addition, as described above, the input control unit 730 includes a mixing unit 731 and a beam control unit for merging the second beam signal input from the beam control unit 500 and the simulated signal generated by the simulation signal generation unit 710. 500), a conversion unit 733 for selectively connecting the simulation signal generation unit 710 and the mixing unit 731 to the signal processing unit 600 may be included. Accordingly, in the process of inputting the simulated signal, only the second beam signal is input to the signal processing unit 600, only the simulated signal is input to the signal processing unit 600, or the simulated signal is merged and input to the second beam signal. Can be. As described above, in the process of inputting the simulated signal, when the simulated signal is merged with the second beam signal and input to the signal processing unit 600, not only the target detection performance of the radar device but also the effect of clutter due to terrain features other than the target is considered. This allows performance tests to be performed.

As described above, according to the fully digital active array radar device and the performance test method using the same according to an embodiment of the present invention, it is possible to verify the function of the radar device by various environments or signals before target tracking of the radar device, thereby minimizing technical errors. can do.

In addition, by using a digital signal as a simulated signal that simulates a target or clutter, it is possible to omit the digital conversion process within the simulated signal input unit, and the accuracy of the signal increases as the conversion process is omitted, thereby testing the performance of the radar device in various ways. can do.

In the above, although preferred embodiments of the present invention have been described and illustrated using specific terms, such terms are only intended to clearly describe the present invention, and embodiments and described terms of the present invention are the technical spirit of the following claims. And it is obvious that various changes and changes can be made without deviating from the scope. Such modified embodiments should not be understood individually from the spirit and scope of the present invention and should be said to fall within the scope of the claims of the present invention.

100: array element 200: amplification unit
300: conversion unit 400: synthesis unit
500: beam control unit 600: signal processing unit
700: simulation signal input unit 710: simulation signal generation unit
730: input control unit 731: mixing unit
733: switching unit 735: first storage unit
737: second storage unit 739: third storage unit

Claims (12)

A plurality of array elements for receiving a signal;
A plurality of conversion units for converting a received signal input from the plurality of array elements into a digital received signal;
A synthesis unit for generating a first beam signal from digital reception signals input from the plurality of conversion units;
A beam control unit for generating a second beam signal from the first beam signal input from the synthesis unit;
A signal processing unit for processing the second beam signal input from the beam control unit to extract target information; And
Includes; a simulated signal input unit for inputting a simulated signal to the signal processing unit,
The simulation signal input unit,
A simulated signal generator for generating a simulated signal; And
And an input control unit provided in each of a plurality of connection paths connecting the beam control unit and the signal processing unit to provide a simulated signal generated from the simulation signal generation unit to the signal processing unit. A plurality of array elements for receiving a signal;
A plurality of conversion units connected to the plurality of array elements to convert received signals input from the array elements into digital reception signals;
A synthesis unit connected to the plurality of conversion units to generate a first beam signal from a digital received signal input from each conversion unit;
A beam control unit connected to the synthesis unit to generate a second beam signal from a first beam signal input from the synthesis unit;
A signal processing unit connected to the beam control unit to process a second beam signal input from the beam control unit and extract target information; And
It is connected between the beam control unit and the signal processing unit, a simulated signal input unit for inputting a simulated signal to the signal processing unit.
The simulation signal input unit,
A simulated signal generator for generating a simulated signal; And
And an input control unit provided in each of a plurality of connection paths connecting the beam control unit and the signal processing unit to provide a simulated signal generated from the simulation signal generation unit to the signal processing unit. The method according to claim 1 or claim 2,
The simulated signal is an active array radar device comprising a digital signal. The method according to claim 1 or claim 2,
A plurality of the synthesis unit is provided,
The beam control unit is an active array radar device that generates a second beam signal by merging the first beam signals input from the plurality of synthesis units. delete The method according to claim 1 or claim 2,
The input control unit,
An active array radar device selectively providing a second beam signal input from the beam control unit and a simulated signal generated from the simulation signal generation unit to the signal processing unit. The method according to claim 1 or claim 2,
The input control unit,
A mixing unit for merging the second beam signal input from the beam control unit and the simulated signal generated by the simulation signal generation unit; And
And a switching unit for selectively connecting the beam control unit, the simulated signal generation unit, and the mixing unit to the signal processing unit. The method according to claim 7,
The input control unit,
A first storage unit provided between the beam control unit and the mixing unit to store a second beam signal input from the beam control unit;
A second storage unit provided between the simulation signal generation unit and the mixing unit to store simulated signals generated from the simulation signal generation unit; And
And a third storage unit provided between the switching unit and the signal processing unit. As a performance test method of an active array radar device that converts a received signal into a digital received signal and sequentially generates and processes a first beam signal and a second beam signal from the digital received signal,
Generating a simulated signal; And
Including the process of inputting the simulated signal; includes,
The process of inputting the simulated signal,
The simulated signal is input through a path through which the second beam signal is input,
The process of generating the simulated signal,
Generating a digital signal; And
And converting the digital signal into an optical signal. delete The method according to claim 9,
The process of inputting the simulated signal,
A performance test method for merging and inputting the simulated signal into the second beam signal. The method according to claim 9,
The simulation signal is a performance test method comprising at least one of a mock target signal simulating a target and a mock clutter signal simulating a clutter.

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