KR101083169B1 - The device and the method of synchronization radiotracking between radar and target - Google Patents

Abstract

PURPOSE: A wireless remote synchronization apparatus between a simulated target signal generator and radar and a method thereof are provided to be easily moved and arranged without a wired data network since being wirelessly synchronized in remote. CONSTITUTION: A linked communications module(110) receives a timing signal or a pulse repetition frequency, a synchronizing signal, and a frequency signal from a radar controller(100) and queues. A simulated target generating command is sensed in the operation controller of a simulated target signal generating apparatus. A pulse signal and a frequency signal are modulated with a frequency and a pulse and wirelessly transmitted to a remote communications module(111) through an antenna. The remote communications module modulates the timing signal and the frequency signal, which are received through the antenna, with the frequency and the pulse. The timing signal and the frequency signal which are the same as that of test radar through time delay are generated and are sent to the simulated target signal generating apparatus(120).

Description

Radio remote synchronization device and method between radar and simulated target signal generator {The device and the method of synchronization radiotracking between RADAR and target}

The present invention relates to a wireless remote synchronization device and method between the radar and the simulated target signal generator for testing the performance of the radar system, and more particularly, inputs timing data and frequency data of a frequency hopping pulse radar. The present invention relates to an apparatus and a method for synchronizing timing and frequency between a pulse radar and a simulated target signal generator in real time by receiving, transmitting wirelessly, receiving and restoring.

In general, radar (RADAR: Detection and Ranging) is an abbreviation for radio detection and distance measurement. It emits microwaves (microwaves, 10cm ~ 100cm) on the object and receives the electromagnetic wave reflected from the object to get the distance from the object. It is a wireless monitoring device that finds direction, altitude, etc.

These radars are sensors that detect the presence of objects at distances beyond human visibility, and are unique in their ability to detect short distances and long distance objects on the other side of the earth beyond the horizon, with all-weather capabilities, regardless of weather conditions or day or night. Due to the characteristics of the signal, an electromagnetic sensor is completely different from the conventional method using optical means.

It is used for military purposes such as early warning, port monitoring, anti-air defense, missile guidance control, as well as civil use such as air navigation and control, earth and space exploration, weather observation, ship navigation, vehicle speed measurement and collision prevention.

In order to test the performance of the radar described above, a simulation is generally performed. The commonly used simulation method is to test by floating the actual target, to install and test the simulation target at a spaced distance, and to generate and test the simulated target signal from external equipment to input the signal to the radar input stage. There is a method and a test method using a simulated target signal generator that generates one or more simulated targets having the speed, size, distance information of the target, etc. Recently, simulations using the simulated target signal generator have been conducted.

1 illustrates an operation concept of testing the performance of a radar system using a general simulated target signal generator, and radiating a radar signal through an antenna in a radar system to transmit and receive an antenna of a simulated target signal generator installed at a predetermined distance Receive and store signals, correct the time corresponding to the distance between the radar and the actual target, compensate for the speed and signal strength of the target to generate the simulated target signal, and then radiate back to the radar system through the transmitting and receiving antennas. Allows you to check target signal processing and detection performance.

However, in developing or operating a radar system, when conducting a simulation test using a conventional general simulated target signal generator, a wired cable (LAN, Fiber optic cable) or wireless communication network, which has been operated, and generates simulation target signal from the remote target receiving control command and generates only the target simulation signal due to the problem of communication speed transmitted through communication network. There was a limit.

Patent Registration 10-248047

None

Therefore, the present invention is a device for synchronizing the frequency and timing between the test target radar and the simulated target signal generator in real time through wireless telecommunication in order to solve the problem of the limited simulation target signal generation of the conventional simulated target signal generator as described above And a method thereof to enable testing without limitation for a radar system that rapidly hops in a broadband operating frequency.

In order to solve the above problems the wireless remote synchronization device of the present invention

Interworking communication module;

And a telecommunication module connected to the interworking communication module by wireless communication.

The interlocking communication module receives a pre-PRI and synchronization signal from a radar controller and generates a simulation target signal generation command from the operation controller 201 and is synchronized with the first pulse signal based on the generation command input time point. A trigger generation circuit 210 for generating a trigger signal terminated in synchronization with the first pulse signal;

When the trigger signal generated by the trigger generation circuit 210 is input, when the trigger signal is a rising start signal, a frequency data signal is provided to the data communication circuit 214, and the trigger signal is An interlocking control circuit 211 for providing a pre-PRI signal to the pulse communication circuit 212 when the falling start signal;

A data communication circuit 214 for frequency-modulating the frequency data signal provided from the interlocking control circuit 211 and outputting the frequency data signal to the transmitter 213;

A pulse communication circuit 212 for pulse-modulating the Pre-PRI signal provided from the interlocking control circuit 211 and outputting the pulse to the transmitter 213;

A transmitter 213 for amplifying a frequency or pulse modulated signal input from the data communication circuit 214 and the pulse communication circuit 212 and outputting the amplified signal to the antenna 215;

An antenna 215 for radiating a signal received from the transmitter 213; Consists of

The telecommunication module

An antenna 300 for receiving the signal radiated from the interworking communication module and providing the received signal to the receiving unit 301;

A receiver 301 which selects, distributes and amplifies a band with respect to the signal received from the antenna 300 and transmits the band to the pulse communication circuit 302 and the data communication circuit 306;

A pulse communication circuit 302 and a data communication circuit 306 for demodulating a signal received from the receiver 301 according to a control signal;

A timing generating circuit (303) for generating a timing signal by synchronizing the pulse signal input through the pulse communication circuit (302) with a timing signal (PRI) appropriately and then transmitting it to the simulation target signal generator;

A reference voltage generation circuit 304 for adjusting a output voltage according to a pulse signal receiving end gain and a simulation target signal generator installation distance to eliminate a malfunction of a noise signal flowing through the reception antenna;

A frequency generating circuit 307 which receives a signal output from the data communication circuit 306 and outputs a frequency data signal synchronized with the output timing signal of the timing generating circuit 303 to the simulation target signal generating apparatus 310; ;

A remote control circuit 305 for controlling the operation of the pulse communication circuit 302, the data communication circuit 306, the reference voltage generating circuit 304 and the frequency generating circuit 307;

It is composed of a wireless remote synchronization device between the radar and the simulated target signal generator characterized in that the configuration.

In addition, the present invention to solve the above problems more effectively

When the trigger generation circuit 210 receives the pre-PRI and synchronization signal from the radar controller and the simulation target signal generation command is input from the operation controller 201, the first pulse signal and Generating a trigger signal that is generated in synchronization and terminates in synchronization with the second pulse signal;

When the trigger signal generated by the trigger generation circuit 210 is input from the interlocking control circuit 211 and the trigger signal is a rising start signal, a frequency data signal is provided to the data communication circuit 214. Providing a pre-PRI signal to a pulse communication circuit (212) when the trigger signal is a falling start signal;

The frequency data signal received from the interlocking control circuit 211 is frequency-modulated through the data communication circuit 214 and output to the transmitter 213,

Pulse-modulating the Pre-PRI signal provided from the interlocking control circuit 211 through a pulse communication circuit 212 and outputting the pulse to the transmitter 213;

Amplifying the frequency or pulse modulated signal inputted to the transmitter 213 and outputting the amplified signal to the antenna 215;

Radiating the signal received from the transmitter 213 to the antenna 301 of the telecommunication module through the antenna 215;

Inputting a signal received from the antenna (301) to a receiver (301);

Demodulating a signal received from the receiver 301 according to a control command of a remote control circuit 305 through a pulse communication circuit 302 and a data communication circuit 306;

A pulse signal demodulated through the pulse communication circuit (302) is transmitted to the mock target signal generating apparatus through a timing generating circuit (303) in synchronization with the timing signal (PRI) as appropriate;

Transmitting the demodulated data signal through the data communication circuit 306 to the mock target signal generating apparatus through a frequency generating circuit 307 in proper synchronization with the timing signal; It provides a wireless remote synchronization method between the radar and the simulated target signal generator as a main means for solving the problem.

The present invention provides more accurate and effective testing and simple operation in developing and testing a radar system by synchronizing operation timing and frequency signals between a test target radar and a simulated target signal generator in real time through wireless telecommunication. .

1 is a block diagram illustrating an operation concept for testing the performance of a radar system using a general simulated target signal generator.
2 is a block diagram showing a circuit configuration of a transceiver of a mock target signal generator.
3 is a block diagram showing the basic configuration of a wireless remote synchronization device between the radar and the simulated target signal generator of the present invention.
Figure 4 is a block diagram showing the detailed configuration of the interlocking communication module and the connection of the radar controller and the operation controller.
5 is a block diagram showing the detailed configuration of the telecommunication module and the connection with the simulated target signal generator.
FIG. 6 is a diagram illustrating a signal flow in real time timing and frequency synchronization between a test target radar and a simulated target signal generator. FIG.

The present invention relates to an apparatus and method for synchronizing operation timing and frequency signals of a test target radar and a simulated target signal generator in real time. Synchronization between the test target radar and the simulated target signal generator is performed by wireless communication, and consists of interlocked communication module and telecommunication module.

The interlocking communication module is installed in the radar operating room and interfaces with the radar controller and operation controller of the test radar. It receives pulse signal and frequency signal from radar controller, receives target generation command in the form of control signal from operation controller, modulates pulse signal and frequency signal and emits it through transmitting antenna.

The telecommunication module receives the pulse signal and the frequency signal radiated through the transmitting antenna, restores the pulse signal and the frequency signal through the demodulation circuit and the delay circuit, and performs local area network (LAN) communication and RS-232 data. It provides a pulse signal and a frequency signal to the simulated target signal generator through communication.

Synchronization of the pulse signal is achieved through pulse communication between the interlocking communication module and the telecommunication module by receiving the Pri-PRI signal from the radar controller. The Pri-PRI signal refers to a signal generated several tens of usec before a pulse (Pulse Repetition Interval) signal. The time required to perform pulse communication depends on the separation distance between the radar under test and the simulated target signal generator, which is usually several tens of usec when the separation distance is within 2 km.

Synchronization of the frequency signal is received through a local area network (LAN) communication to receive a randomly generated frequency signal from the radar controller through the frequency communication between the interworking communication module and the telecommunication module. Simulated Target Signal Generator Applies the target signal generation command from the operation controller to frequency modulated and transmitted by the timing signal of the trigger generation circuit of the interlocking communication module, and restores it from the telecommunication module to provide the operating frequency to the simulated target signal generator.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

3 is a block diagram showing a basic configuration of a synchronization device of the present invention. As shown, the synchronization device of the present invention is composed of an interlocking communication module and a remote communication module, and the connection between the devices is connected by wireless communication. The interlocking communication module is connected to the radar controller and the operation controller and receives the radar timing signal, the frequency signal and the simulation target generation control signal, and modulates the pulse and emits the frequency through the antenna.

The telecommunication module receives the transmission signal of the interworking communication module through the antenna, restores the pulse signal and the frequency signal through the demodulation circuit and the delay circuit, and transmits timing, frequency and control signals to the simulation target signal generator.

In more detail, the interlocking communication module 110 receives the pulse repetition period (PRI), the synchronization signal and the frequency signal, which are timing signals, from the radar controller 100 at all times, and then simulates the target signal generator. When a simulation target generation command is detected from the operation controller, the pulse signal and the frequency signal are pulsed and frequency modulated according to the synchronization signal, and transmitted to the telecommunication module 111 through the antenna 112 wirelessly. The remote communication module 111 demodulates a timing signal and a frequency signal received through an antenna and pulses and frequency demodulates the signal, and generates the same timing signal and frequency signal as the radar under test and provides the simulated signal generator 120 to the target target signal. do.

Figure 4 is a block diagram showing the detailed configuration of the interworking communication module and the connection and transmission and reception of the radar controller and operation controller. As shown, the interlocking communication module of the present invention includes an interlocking control circuit 211, a trigger generation circuit 210, a pulse communication circuit 212, a data communication circuit 214, a transmitter 213, an antenna 215. It is configured to include).

The trigger generation circuit 210 receives a pre-PRI and synchronization signal from the radar controller through an RS-232 data communication cable and receives a simulation target signal generation command from the operation controller 201 of the simulation target device. Interlocking control circuit by generating a trigger signal which is synchronized with the generation of the first synchronous pulse signal and the triggering signal is synchronized with the generation of the next second synchronous pulse signal based on the generation command input point. Provided at 211. The trigger signal generated by the trigger generation circuit 210 is used as a start signal for demodulating and transmitting the pulse signal and the frequency signal input from the radar controller in the interlocking communication module. The interlocking control circuit 211 receives a pre-PRI signal and a frequency data signal from the radar controller 200 in a standby mode and receives a start signal generated by the trigger generation circuit 210 to provide a rising edge trigger. Signal, the frequency data signal is provided to the data communication circuit 214, and when the falling edge trigger signal, the pre-PRI signal is provided to the pulse communication circuit 212. The frequency data signal provided from the interlocking control circuit 211 is frequency-modulated through the data communication circuit 214 and input to the transmitter 213. The pre-PRI signal is pulse-modulated through the pulse communication circuit 212 to transmit the transmitter 213. ) Is entered. The transmitter 213 amplifies the modulated signal input from the pulse communication circuit 212 and the data communication circuit 214 through a high output amplifier for wireless communication with a mock target signal generating device located at a long distance, and then selects and combines a band. And output. The antenna 215 receives the output signal of the transmitter 213 and radiates to the atmosphere using a directional antenna.

Figure 5 is a block diagram showing the detailed configuration of the telecommunications module and the transmission and reception with the simulated target signal generator. As shown, the telecommunication module of the present invention includes an antenna 300, a receiver 301, a pulse communication circuit 302, a timing generator 303, a reference voltage generator circuit 304, a remote control circuit 305, And a data communication circuit 306, a frequency generating circuit 307, and a timing signal connector 320.

The antenna 300 receives a signal radiated from the companion communication module and provides the received signal to the receiver 301. At this time, the antenna uses the directional antenna to improve the isolation of the signal outside the beam steering range of the transmission antenna of the interlocking communication module and to increase the reception sensitivity. The receiver 301 selects, distributes, and amplifies a band with respect to the signal received through the antenna 300, and transmits the band to the pulse communication circuit 302 and the data communication circuit 306, and the transmitted signal is a pulse communication circuit. 302 and data communication circuit 306 are demodulated. The demodulation process is performed by a control signal received from the remote control circuit 305.

The timing generating circuit 303 generates a timing signal by synchronizing the pulse signal input through the pulse communication circuit 302 with the operation timing signal PRI of the test target radar to generate a timing signal, and then generates a simulated target signal. Send to the device. The timing signal generation process is performed through a time delay circuit and a pulse signal reception intensity comparison circuit. The time delay circuit is expressed by the following equation (1).

Equation (1): time delay circuit = time delay + wireless communication time delay (modulation and demodulation, wireless communication according to the simulation target signal generator installation distance) = Pre-PRI signal

Here, the Pre-PRI signal is a signal generated several tens of times before the PRI signal from the radar controller, and the modulation and demodulation time delay depends on the data size and the baud rate. Preferably, the distance between the simulated target signal generator and the radar under test is within several Km (male usec) in consideration of the transmission power, but is not necessarily limited thereto.

The reference voltage generator circuit 304 adjusts the output voltage according to the gain of the pulse signal receiving end and the installation distance of the simulated target signal generator, and is provided as a reference signal of the received intensity comparator circuit of the timing generator circuit 303 so that the timing generator module can be used as a timing signal. Eliminates malfunction of the noise signal flowing through the receiving antenna.

The frequency generating circuit 307 receives the output of the data communication circuit 306 and outputs the frequency data signal synchronized with the output timing signal PRI of the timing generating circuit 303 to provide to the simulation target signal generating apparatus 310. . For this purpose, the frequency generating circuit 307 uses the same time delay circuit as the time delay circuit used in the timing generating circuit 303.

FIG. 6 is a diagram illustrating a signal flow in real time timing and frequency synchronization between a test target radar and a simulated target signal generator.

The interlocking communication module receives the sync signal 400 and the pre-PRI signal 401, which are timing signals, from the radar controller under test, and receives the frequency data F-data signal 402, which is a frequency signal, in standby mode. When the start signal 403, which is a signal generation command, is received from the remote controller, the signal generated in synchronization with the first sync pulse signal at the time when the start signal 403 is generated in the trigger generation circuit is the next second. Generates a Trigger 404 signal that terminates with a sync pulse signal. The frequency data (F-data) 405 is synchronized with the generation of the trigger signal and is inputted from the radar controller, and the frequency data signal waiting in the interlocking control circuit is frequency-modulated through the data communication module and radiated through the antenna. 406) The signal is synchronized to the end of the trigger signal and received from the radar controller, and the pre-PRI signal waiting for the interlocking control circuit is pulse-modulated through the pulse communication circuit and radiated through the antenna. The Pre-PRI signal received from the telecommunication module generates a PRI 408 signal synchronized with the operation timing of the test radar through a delay circuit. The frequency data F-data 407 is synchronized with the PRI 408 signal. Is generated. The interlocking module and telecommunication module continue to pre-PRI signal and F-data by using wireless communication until pre-PRI signal and F-data signal provided to the radar controller under test are received from the remote controller. Send and receive to perform timing and frequency synchronization.

According to the method proposed in the present invention, in the radar system, the pulse signal before the operation pulse signal and the frequency signal 1 batch before the operation frequency signal before the operation pulse signal are generated in advance, and the radar operation pulse signal and the frequency signal between the radar and the simulated target signal generator. To test the performance of a pulsed radar system that frequency hopping using a simulated target signal generator with a restoring communication module, it is possible to real-time that only limited testing is possible due to the communication time required to control the conventional simulated target signal generator. And the frequency signal can be synchronized to simulate the actual operating environment of the radar system.

none

Claims (2)

Interworking communication module;
And a telecommunication module connected to the interworking communication module by wireless communication.
The interlocking communication module receives a pre-PRI and synchronization signal from a radar controller and generates a simulation target signal generation command from the operation controller 201 and is synchronized with the first pulse signal based on the generation command input time point. A trigger generation circuit 210 for generating a trigger signal terminated in synchronization with the first pulse signal;
When the trigger signal generated by the trigger generation circuit 210 is input, when the trigger signal is a rising start signal, a frequency data signal is provided to the data communication circuit 214, and the trigger signal is An interlocking control circuit 211 for providing a pre-PRI signal to the pulse communication circuit 212 when the falling start signal;
A data communication circuit 214 for frequency-modulating the frequency data signal provided from the interlocking control circuit 211 and outputting the frequency data signal to the transmitter 213;
A pulse communication circuit 212 for pulse-modulating the Pre-PRI signal provided from the interlocking control circuit 211 and outputting the pulse to the transmitter 213;
A transmitter 213 for amplifying a frequency or pulse modulated signal input from the data communication circuit 214 and the pulse communication circuit 212 and outputting the amplified signal to the antenna 215;
An antenna 215 for radiating a signal received from the transmitter 213; Consists of
The telecommunication module
An antenna 300 for receiving the signal radiated from the interworking communication module and providing the received signal to the receiving unit 301;
A receiver 301 which selects, distributes and amplifies a band with respect to the signal received from the antenna 300 and transmits the band to the pulse communication circuit 302 and the data communication circuit 306;
A pulse communication circuit 302 and a data communication circuit 306 for demodulating a signal received from the receiver 301 according to a control signal;
A timing generation circuit 303 for generating a timing signal by synchronizing a pulse signal input through the pulse communication circuit 302 with a timing signal PRI and transmitting the generated timing signal to a simulation target signal generator;
A reference voltage generation circuit 304 for adjusting a output voltage according to a pulse signal receiving end gain and a simulation target signal generator installation distance to eliminate a malfunction of a noise signal flowing through the reception antenna;
A frequency generating circuit 307 which receives a signal output from the data communication circuit 306 and outputs a frequency data signal synchronized with the output timing signal of the timing generating circuit 303 to the simulation target signal generating apparatus 310; ;
A remote control circuit 305 for controlling the operation of the pulse communication circuit 302, the data communication circuit 306, the reference voltage generating circuit 304 and the frequency generating circuit 307;
Wireless remote synchronization device between radar and simulated target signal generator When the trigger generation circuit 210 receives the pre-PRI and synchronization signal from the radar controller and the simulation target signal generation command is input from the operation controller 201, the first pulse signal and Generating a trigger signal that is generated in synchronization and terminates in synchronization with the second pulse signal;
When the trigger signal generated by the trigger generation circuit 210 is input from the interlocking control circuit 211 and the trigger signal is a rising start signal, a frequency data signal is provided to the data communication circuit 214. Providing a pre-PRI signal to a pulse communication circuit (212) when the trigger signal is a falling start signal;
The frequency data signal received from the interlocking control circuit 211 is frequency-modulated through the data communication circuit 214 and output to the transmitter 213,
Pulse-modulating the Pre-PRI signal provided from the interlocking control circuit 211 through a pulse communication circuit 212 and outputting the pulse to the transmitter 213;
Amplifying the frequency or pulse modulated signal inputted to the transmitter 213 and outputting the amplified signal to the antenna 215;
Radiating the signal received from the transmitter 213 to the antenna 301 of the telecommunication module through the antenna 215;
Inputting a signal received from the antenna (301) to a receiver (301);
Demodulating a signal received from the receiver 301 according to a control command of a remote control circuit 305 through a pulse communication circuit 302 and a data communication circuit 306;
A pulse signal demodulated through the pulse communication circuit (302) is transmitted to a mock target signal generator in synchronization with a timing signal (PRI) through a timing generating circuit (303);
Transmitting the demodulated data signal through the data communication circuit (306) to the simulation target signal generator in synchronization with the timing signal through the frequency generating circuit (307); Wireless remote synchronization method between radar and simulated target signal generator

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