KR100483940B1 - Timing signal generating apparatus for electronic attack device and pulse radar - Google Patents

Abstract

The present invention relates to a timing signal generator for an electronic attack equipment and a pulse radar, in particular, for the configuration of various test environments and test scenarios in the interlocking or single test environment configuration of the electronic attack (EA) equipment and coherent pulse radar. The purpose is to enable the software to change key timing signals. The present invention for this purpose is a DT pulse generator 120 for generating a DT pulse corresponding to the maximum pulse accumulation period when the antenna rotates in the azimuth direction, and PRI corresponding to the time interval between the transmission pulse based on the DT pulse A transmission pulse generator 130 for generating a pulse and generating a transmission pulse therefrom, a CPI pulse generator 150 for generating a CPI pulse by counting a transmission pulse based on the DT pulse, and the azimuth pulse ARP The target trigger pulse in the azimuth direction is generated by counting the CPI pulses), and the target trigger pulse in the direction of the distance cell is generated by counting the A / D clock based on the transmit pulse, and then the two target trigger pulses are ORed. Target trigger pulse generation unit 160 for generating a target trigger pulse and target signal generation for generating target signals (I, Q) by inputting the target trigger pulse The configuration having a (170).

Description

TIMING SIGNAL GENERATING APPARATUS FOR ELECTRONIC ATTACK DEVICE AND PULSE RADAR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to wireless technology, and in particular, to a timing signal generator for electronic attack (EA) equipment and pulse radar.

Radar is a device that detects the distance and direction of an object using electromagnetic waves.EW (Electronic Warfare) equipment collects electromagnetic waves emitted by the radar to locate the radar, and if necessary, uses radar It is a device that hinders operation. Such electronic equipment is composed of an electronic support (ES) device that detects radio waves and an electronic attack (EA) device that interferes with the radar signal. In particular, the EA equipment is most effective when it can generate the same timing signals as the radar to interfere.

Modern radars use a coherent method that detects a target signal by comparing the phase of a transmission signal and a reception signal to reduce the electromagnetic interference effects of electronic warfare equipment, and requires a relatively complex timing signal.

Therefore, in order to evaluate the performance of the latest EA equipment and radar, a timing signal generator capable of operating the EA equipment and the coherent radar in consideration of the phase information of the radar signal is required when configuring the test environment.

For this purpose, the coherent pulse radar can be used to construct a simulated radar using real radar or a combination of various measurement equipment for various performance analysis. In addition, a plurality of pulse generators and signal synthesizers are used to generate timing signals and simulated target signals required for operation.

However, the prior art has a problem that it is very difficult to generate the timing signal required for the EA equipment and coherent pulse radar operation in real time while using relatively expensive equipment.

Therefore, in order to solve the conventional problem, the present invention provides a software program for key timing signals for various test environments and test scenarios in an electronic attack (EA) device and a coherent pulse radar. An object of the present invention is to provide a timing signal generator that can be modified.

In order to achieve the above object, the present invention is to design a hardware structure that can easily change the timing of DT pulse, transmit pulse, CPI pulse and target trigger pulse in software, so as to configure test environment and test scenario of EA equipment and pulse radar. It is characterized by the configuration so that it can be easily and variously set.

That is, the present invention, in order to achieve the above object in the configuration of the performance test environment of the electronic attack (EA) equipment and pulse radar, ARP and ACP generating unit for generating azimuth-related pulse (ARP), azimuth-change pulse (ACP) And a DT pulse generator for generating DT pulses by comparing the ACP value stored in the memory with the ACP, and a value counting an A / D clock based on the DT pulses with a pre-stored PRI pulse value. When the pulse width counted at the time point coincides with the pre-stored pulse width value, the transmit pulse generator generates a transmit pulse, and counts the transmit pulse based on the DT pulse and compares the counted value with the prestored transmit pulse. And a CPI pulse generator for generating a CPI pulse at a matched time point, and comparing the CPI pulse value with a pre-stored CPI pulse value while counting the CPI pulse based on ARP. Generates a trigger pulse, counts A / D clocks based on the transmit pulse, compares the distance cell value with a pre-stored distance cell value, generates a target trigger pulse in the direction of a distance cell, and generates a final target trigger pulse by performing a logical operation on the target trigger pulse. And a target signal generator configured to generate at least one target signal as the input of the target trigger pulse, and to output the target trigger pulse according to a D / A clock.

Therefore, the present invention not only configures the test environment of the two equipments at low cost, but also makes it easy to check / analyze the test results.

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

Timing signal generator required in the performance test environment of EA equipment and coherent pulse radar should be able to basically generate all timing signals necessary for EA equipment operation and coherent radar operation. Simulated target signal generation should be enabled so that synchronous jamming and more effective jamming effects can be analyzed.

For this purpose, Azimuth Reference Pulse (ARP), Azimuth Changing Pulse (ACP), Dwell Time (DT) pulses related to antenna rotation and beam width, transmit pulses related to transmission / reception timing of the transceiver, and coherent integration intervals of the signal processor. Baseband analog simulation and digital timing signals such as coherent processing integration (CPI) pulses, A / D sampling clocks for converting received signals into digital signals, and target trigger pulses for determining the location of the simulated target signals. Target signals should be provided.

Typically, DT pulses, CPI pulses, and transmit pulses of a coherent pulse radar have a timing relationship as shown in FIG. The time intervals associated with these pulses, the transmit pulse width, and the number of transmit pulses per CPI pulse have various values depending on the radar.

Accordingly, in the embodiment of the present invention, the timing signal generator enables various timing generation by software by storing a related parameter value in a memory and sequentially comparing the parameter values with a desired timing.

The parameter values related to the timing signal generation are transmitted from the control computer 200 to the timing signal generator 100, which can be changed in software.

That is, in the exemplary embodiment of the present invention, the timing signal generator 100 may include the ARP and ACP generators for generating an azimuth-related pulse (ARP) and an azimuth-change pulse (ACP), as shown in the block diagram of FIG. 110, a DT pulse generator 120 for counting the pulse ACP on the basis of the pulse ARP, comparing the pre-stored ACP value and outputting a DT pulse when the comparison result is matched, and the DT A transmission pulse generator 130 for counting the A / D clock based on the pulse and counting the pulse width when the A / D clock coincides with the pre-stored PRI value and generating a transmission pulse when the pulse width matches the pre-stored pulse width; The CPI pulse generator 150 generates a CPI pulse when the comparison result is counted based on the DT pulse and compared with a previously stored transmission pulse stored value, and the azimuth pulse ARP is generated. Counting CPI Pulses Compare the values of counting the A / D clock with the previously stored values based on the transmission pulses, and if the comparison results match, generate a target trigger pulse in the azimuth direction and the distance cell direction and logically match the target trigger pulse. A target trigger pulse generator 160 for generating the target signal, a target signal generator 170 for generating target signals I and Q with reference to the target trigger pulse, and an A / D clock; ) And a clock generator 140 inputting the target trigger pulse generator 160 and a D / A clock to the target signal generator 170.

In FIG. 1, the PCI interface unit 180 is responsible for a function for inputting and outputting control commands and control result data with the control computer 200.

As shown in the block diagram of FIG. 3, the DT pulse generator 120 includes an ACP counter 121 for counting the number of azimuth angle change pulses ACP based on the azimuth angle-related pulse ARP, and an azimuth angle-related pulse. An address generator 123 for generating a corresponding address by inputting (ARP), an ACP memory 122 for outputting an ACP value of a region designated by the address, an output value of the ACP counter 121, and an ACP memory 122 ) And compare output values and generate a DT pulse when the comparison results match.

As shown in the block diagram of FIG. 4, the transmission pulse generator 130 generates an address using an A / D clock counter 131 for counting an A / D clock based on a DT pulse and a DT pulse. An address generator 134, a PRI memory 132 for outputting a PRI value of a region designated by an address provided from the address generator 134, an output value of the A / D clock counter 131, and the PRI memory. Comparator 135 for generating a PRI pulse corresponding to the time interval between transmission pulses when the output value of 132 is compared and matched, and a pulse width triggered by the PRI pulse of the comparator 135 to count the A / D clock. A pulse width memory 133 for outputting a counter 136, a pulse width value of an area designated by the address in the address generator 134, an output value of the pulse width memory 133, and the pulse width counter 136 When generating pulses by comparing the count values of The key comprises a comparator 137.

As shown in the block diagram of FIG. 5, the CPI pulse generator 150 includes a transmission pulse counter 151 for counting transmission pulses based on a DT pulse, and an address generator for generating an address using the DT pulse as an input. 153, a transmission pulse memory 152 that outputs a transmission pulse value of the area designated by the address, and an output value of the transmission pulse memory 152 and a coefficient value of the transmission pulse counter 151 are matched. In this case, the comparator 154 generates a CPI pulse, and the blocking logic 155 removes the last CPI pulse generated in the DT section of the CPI pulse.

As shown in the block diagram of FIG. 6, the target trigger pulse generator 160 includes a CPI counter 161 for counting CPI pulses based on an azimuth reference pulse ARP, and the coefficient of the CPI counter 161. A comparator 166 for generating a target trigger pulse in the azimuth direction by comparing a value with an output value of the CPI memory 162, a distance cell counter 165 for counting an A / D clock based on a transmission pulse, and the distance cell. Comparator 167 which compares the count value of the counter 165 with the output value of the distance cell memory 164 to generate a target trigger pulse in the distance cell direction, and the target trigger by ORing the output values of the comparators 166 and 167. An end gate 168 for outputting a pulse is provided.

The operation and effect of the embodiment of the present invention configured as described above will be described with reference to FIGS. 2 to 6.

If the control computer 200 arbitrarily sets the test environment and test scenario, a message for generating a timing signal required for this is input to the timing signal generator 100 through the PCI interface unit 180, and the timing signal generator ( 100), Azimuth Reference Pulse (ARP) related to antenna rotation and beamwidth, Azimuth Changing Pulse (/ ACP) / Dwell Time (DT) pulse, transmit pulse related to transmit / receive timing of transceiver, coherent integration of signal processor Baseband analog and digital timing signals such as Coherent Processing Integration (CPI) pulses that indicate the interval, A / D sampling clocks for converting received signals into digital signals, and target trigger pulses that determine the location of the simulated target signals. A mock target signal is provided.

First, the ARP and APC generator 110 generates an azimuth-related pulse (ARP) and inputs the DT pulse generator 120 and the target trigger pulse generator 160 to input the azimuth angle change pulse (ACP). The clock generator 140 generates an A / D clock, inputs it to the transmission pulse generator and the target trigger pulse generator 150, and generates a D / A clock to generate a target signal. It is input to the generation unit 170.

In this case, when the antenna rotates in the azimuth direction, the DT pulse generator 120 generates a DT (Dwell Time) pulse corresponding to a maximum pulse integration section. Referring to FIG. 3, the ACP counter 121 counts the number of azimuth change pulses ACP based on the azimuth-related pulse ARP, and the address generator 123 inputs an address by inputting the azimuth-related pulse ARP. The ACP memory 122 outputs the ACP value of the area designated by the address. Accordingly, the comparator 124 compares the output value of the ACP counter 121 and the output value of the ACP memory 122, and generates a DT pulse when the comparison result is matched, thereby transmitting pulse generator 130 and CPI pulse generator. Will be entered as 150.

That is, the DT pulse generator 120 stores the number of ACPs constituting the DT pulse in the ACP memory 122, reads them sequentially, and compares them with the values of the ACP counter 121 to determine a desired azimuth change pulse (ACP) interval. To generate DT pulses in software. The DT pulse initializes the ACP counter 121 and the address generator 123.

When the A / D clock counter 131 counts the A / D clock based on the DT pulse, the PRI pulse generator 132 and the pulse width memory 133 input the DT pulse. The PRI and pulse width values are output in the area designated by the address generated by the received address generator 134. In this case, the comparator 135 compares the output value of the A / D clock counter 121 with the value of the PRI memory 132 and generates a PRI pulse corresponding to a time interval between transmission pulses when they match. The PRI pulse is used as a trigger signal of the pulse width counter 136 so that the pulse width counter 136 counts an A / D clock. Accordingly, the comparator 137 compares the output value of the pulse width memory 133 with the output value of the pulse width counter 136 to generate a transmission pulse informing transmission timing.

That is, the transmission pulse generator 130 reads the stored values of the PRI memory 132 and the pulse width memory 133 in sequence with the desired timing, similarly to the DT pulse generator 120, and the counter 131 ( Since it is configured in a manner to compare with the output value of 136), the PRI and the pulse width of the transmission pulse can be set to any value corresponding to an integer multiple of the A / D clock. The transmission pulse initializes the address generator 134.

At this time, the CPI pulse generator 150 generates a corresponding address from the address generator 153 receiving the DT pulse when the transmit pulse counter 151 counts the transmit pulse based on the DT pulse, and transmits the pulse memory 152. Outputs a transmission pulse value in the area designated by the address. At this time, the comparator 154 compares the transmission pulse value by the counting and the transmission pulse value by the addressing, and generates a CPI pulse indicating the basic data block section of the coherent pulse radar signal processing when the two values match. Accordingly, the blocking logic 155 removes the last CPI pulse generated in the DT period, and inputs the CPI pulse having a relationship consistent with the timing of FIG. 2 to the target trigger pulse generator 160.

However, since the value stored in the transmission pulse memory 153 determines the number of pulses per CPI, the number of transmission pulses constituting the CPI can be arbitrarily set. The CPI pulse initializes the transmission pulse counter 151 and the address generator 153.

Accordingly, the target trigger pulse generator 160 generates a synchronous jamming timing for the electronic attack (EA) equipment and generates a target trigger pulse for generating a mock target signal that can easily check the jamming effect for the simulated radar. In order to have an arbitrary activity trajectory, a target trigger pulse is generated at a desired azimuth and distance cell position every scan.

To this end, the target trigger pulse generator 160 counts the CPI pulse based on the azimuth-related pulse (ARP) and the distance cell counter 165 counts the A / D clock based on the transmission pulse. The comparator 166 compares the output value of the CPI memory 162 with the output value of the CPI counter 161 to generate a target trigger pulse in the azimuth direction, and the comparator 167 outputs the output value of the distance cell memory 164. The target trigger pulse in the direction of the distance cell is generated by comparing with the output value of the distance cell counter 165. Accordingly, the AND gate 168 generates a desired target trigger pulse by ORing the target trigger pulse in the azimuth direction and the target trigger pulse in the distance cell direction. The final target trigger pulse is fed back to the address generator 163, and the corresponding address in the address generator 163 is input to the CPI memory 162 and the distance cell memory 164.

In addition, the target signal generator 170 generates the target signal I (Q) by inputting the D / A clock and the target trigger pulse from the target trigger pulse generator 160.

In this case, the CPI memory 162 and the distance cell memory 164 store the azimuth and distance information values at which the target signal is located every scan, thereby creating a test scenario environment in which a plurality of targets fly arbitrary trajectories. Can give

As described in detail above, the present invention can generate various real-time timing signals for the operation of the electronic attack equipment and the pulse radar, so that the performance of the electronic attack (EA) equipment and the pulse radar can be easily checked in a single test environment, It has the effect of enabling analysis.

In particular, the present invention can accurately obtain the parameters such as pulse repetition time (PRI) and pulse width of the target radar when using a plurality of timing signal generators of the same function mutually synchronized, as well as interlocking test is possible, test evaluation, Identification and analysis are also very easy.

In addition, since the present invention can change various parameters necessary for setting the activity trace of the timing signal and the baseband simulated target signal in software, the test environment of the electronic attack (EA) equipment and pulse radar having an arbitrary scenario can be reduced at a low cost. There is an effect that can be built.

1 is a block diagram of an apparatus for an embodiment of the present invention.

FIG. 2 is a waveform diagram showing the relationship of DT pulses in FIG.

3 is a block diagram showing the configuration of the DT pulse generator in FIG.

4 is a block diagram showing the configuration of a transmission pulse generator in FIG.

FIG. 5 is a block diagram showing the configuration of a CPI pulse generator in FIG. 1; FIG.

Figure 6 is a block diagram showing the configuration of the target trigger pulse generator in Figure 1;

Explanation of symbols on the main parts of the drawings

110: ARP and ACP generator 120: DT pulse generator

130: transmit pulse generator 140: clock generator

150: CPI pulse generator 160: target trigger pulse generator

170: target signal generator 180: PCI interface unit

Claims (8)

DT pulse generation unit for generating a DT pulse corresponding to the maximum pulse accumulation section when the antenna rotates in the azimuth direction, A transmission pulse generator for generating a PRI pulse corresponding to a time interval between transmission pulses based on the DT pulse, and generating a transmission pulse therefrom; A CPI pulse generator for generating a CPI pulse by counting a transmission pulse based on the DT pulse; Counting the CPI pulse based on the azimuth pulse (ARP) generates a target trigger pulse in the azimuth direction, and generates a target trigger pulse in the direction of the distance cell by counting an A / D clock based on the transmission pulse. A target trigger pulse generator for generating a target trigger pulse for determining a generation position of the simulated target by ORing the target trigger pulse; And a target signal generator for generating a target signal (I, Q) by inputting the target trigger pulse. The method of claim 1, wherein the DT pulse generating unit An ACP counter for counting the number of azimuth angle change pulses (ACPs) on the basis of azimuth-related pulses (ARP); ACP memory for receiving and storing the ACP value constituting the DT pulse from an external control computer, And a comparator configured to compare the output value of the ACP counter and the output value of the ACP memory and generate a DT pulse when the comparison result is identical. The transmission pulse generator of claim 1, wherein the transmission pulse generator comprises: A / D clock counter that counts A / D clock based on DT pulse, A PRI memory that receives and stores a PRI value representing the time interval between transmission pulses from an external control computer, A first comparator configured to compare the output value of the A / D clock counter with the output value of the PRI memory and generate a PRI pulse corresponding to a time interval between transmission pulses when they match; A pulse width counter triggered by the PRI pulse of the first comparator and counting the A / D clocks; A pulse width memory for receiving and storing a pulse width value of a transmission pulse from an external control computer, And a second comparator for comparing the output value of the pulse width memory with the count value of the pulse width counter to generate a transmission pulse. The method of claim 1, wherein the CPI pulse generator A transmission pulse counter that counts transmission pulses based on a DT pulse, A transmission pulse memory for receiving and storing a transmission pulse value constituting the CPI from an external control computer; And a comparator for comparing the output value of the transmission pulse memory with the count value of the transmission pulse counter to generate a CPI pulse. [5] The timing signal generator of claim 4, further comprising a blocking logic for removing the last CPI pulse generated in the DT section of the CPI pulses. The method of claim 1, wherein the target trigger pulse generator A CPI counter that counts CPI pulses based on an azimuth reference pulse (ARP), A CPI memory for receiving and storing an azimuth angle indicating a target signal from an external control computer; A first comparator for generating a target trigger pulse in the azimuth direction by comparing the count value of the CPI counter with the output value of the CPI memory; A distance cell counter that counts the A / D clock based on the transmission pulse, A distance cell memory for receiving and storing a distance value of a target signal from an external control computer; A second comparator for generating a target trigger pulse in the direction of the distance cell by comparing the count value of the distance cell counter with the output value of the distance cell memory; And a logic gate for outputting a target trigger pulse by logically combining the output values of the first and second comparators. 7. The apparatus of claim 6, wherein the distance and azimuth position of the target signal is updated every scan. delete