KR102590236B1 - Threat analysis method based on radar signal pattern - Google Patents

Abstract

A threat analysis method based on radar signal patterns is disclosed. The threat analysis method according to an embodiment of the present invention is a threat analysis method based on a radar signal pattern by an electronic device and includes the following steps.
- Receiving a radar signal,
- Determining the received radar signal as one of the first and second signals based on the change in signal pattern over time,
- identifying a radar corresponding to the radar signal according to the pattern configuration of the received radar signal, and
- Transmitting the identification result for the received radar signal and the accuracy of the identification result to another electronic device.
Here, if the signal pattern changes with time, it is a first signal, and if it does not change, it is a second signal.

Description

Threat analysis method based on radar signal pattern {THREAT ANALYSIS METHOD BASED ON RADAR SIGNAL PATTERN}

The present invention relates to a threat analysis method based on radar signal patterns.

Radars currently used on the battlefield do not use the simple patterns of signals from the past, but use complex signal forms to locate and track aircraft, and as a result, the aircraft is hit. This is because existing simple signals are deceived by the aircraft's deception techniques and cause tracking to fail. To prevent deception, complex signal patterns must be used to track aircraft.

In order to respond to these latest radar techniques, prior art typically identifies radar through two types of signal analysis. On the one hand, if the input signal matches the pattern stored in the mission data file, the analysis device identifies the corresponding radar and informs the pilot. If the stored pattern is complex, the identification time increases. On the other hand, in order to reduce identification time, if even a part of the pattern matches the pattern stored in the mission data file, the corresponding radar is identified and notified to the pilot. The accuracy of the identification result is reduced.

In other words, the methods known to date for responding to the latest radar techniques have problems in that radar identification takes too much time or the accuracy of the identification results is unreliable. If the identification time is long, it is difficult for the aircraft pilot to immediately recognize the threat of being hit, which significantly reduces the survival rate. If the accuracy of the radar identification result is low, it is difficult to respond appropriately according to the identification result, which also lowers the survival rate. there is a problem.

The present invention aims to solve the above-described needs and/or problems.

In addition, the present invention distinguishes between a complex signal pattern and a simple signal pattern, and in the case of a complex signal pattern, the radar specifications and partial information stored in the memory are used before all analysis processes for distinguishing the radar signal of the signal pattern are completed. If it matches, the purpose is to implement a threat analysis method for unexpected threat signals by conveying the type of radar signal and the accuracy of the analysis as an analysis result for the relevant part.

A threat analysis method according to an embodiment of the present invention is a threat analysis method based on a radar signal pattern by an electronic device, comprising: receiving a radar signal; determining the received radar signal as one of the first and second signals based on changes in signal patterns over time; -If the signal pattern changes with time, it is a first signal. If it does not change, it is a second signal. - Identifying the radar corresponding to the radar signal according to the configuration of the pattern of the received radar signal; and transmitting the identification result for the received radar signal and the accuracy of the identification result to another electronic device.

Preferably, the signal pattern may include at least one of PRI, PW, and size.

Preferably, in the step of identifying the radar, in the case of the first signal, it takes more time to identify the radar than in the case of the second signal.

Preferably, when the second signal is determined, the identification result for the received radar signal and the accuracy of the identification result are transmitted to another electronic device, and the accuracy may be provided as 100%.

Preferably, the identification step may compare the pattern of the received radar signal with the pattern of radar specifications stored in the memory to determine the received radar signal as one of the stored radar specifications.

Preferably, in the case of the first signal, the accuracy may be calculated based on the degree to which at least part of the pattern of the received radar signal matches a pattern of any one of the radar specifications stored in the memory.

Preferably, the accuracy is calculated according to the equation below, where Tp may represent the accuracy, Ap may represent the pattern of the received radar signal, and Mp may represent the pattern of the radar specifications stored in the mission data.

Preferably, in the case of the first signal, the identifying and transmitting steps may be repeated until the accuracy of the identification result is calculated to be 100%.

Preferably, in the case of the first signal, the identifying and transmitting steps may be repeated until the first signal is not detected.

In another embodiment of the present invention, the electronic device is an electronic device for threat analysis based on a radar signal pattern. The electronic device includes a memory, a transceiver, and a processor, and the processor receives a radar signal and receives the received radar signal. An operation of determining one of the first and second signals based on changes in the signal pattern over time (if the signal pattern changes over time, it is the first signal, and if it does not change, it is the second signal), of the received radar signal. Depending on the configuration of the pattern, an operation of identifying a radar corresponding to the radar signal and an operation of transmitting the identification result for the received radar signal and the accuracy of the identification result to another electronic device can be performed.

A computer-readable recording medium according to another embodiment of the present invention is a recording medium readable by a computer system on which a program for executing a threat analysis method based on a radar signal pattern is recorded on the computer system, and is a recording medium readable by a computer system based on the radar signal pattern. The threat analysis method includes the steps of receiving a radar signal, determining the received radar signal as one of the first and second signals based on changes in the signal pattern over time (if the signal pattern changes over time, the first signal , if it does not change, it is a second signal), identifying a radar corresponding to the radar signal according to the configuration of the pattern of the received radar signal, and determining the accuracy of the identification result for the received radar signal and the other electronic device. It includes the step of transmitting to the device.

The accompanying drawings, which are included as part of the detailed description to aid understanding of the present invention, provide embodiments of the present invention, and together with the detailed description, explain technical features of the present invention.
1A is a flowchart of a threat analysis method based on a radar signal pattern according to an embodiment of the present invention.
Figure 1b is a flowchart of a threat analysis method based on a radar signal pattern according to another embodiment of the present invention.
2A and 2B are schematic reference diagrams of a threat analysis method according to an embodiment of the present invention.
Figure 3 is a block diagram of an electronic device applicable to an embodiment of the present invention.

Hereinafter, embodiments disclosed in the present invention will be described in detail with reference to the accompanying drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted. The suffixes “module” and “part” for components used in the following description are given or used interchangeably only for the ease of preparing the specification, and do not have distinct meanings or roles in themselves. Additionally, in describing the embodiments disclosed in the present invention, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present invention, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in the present invention, and the technical idea disclosed in the present invention is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present invention are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

1A is a flowchart of a threat analysis method based on a radar signal pattern according to an embodiment of the present invention.

Referring to FIG. 1A, the electronic device can receive a radar signal (S11).

The electronic device can identify the received radar signal. For example, the received radar signal may be determined as one of at least two radar signals, such as an A radar signal and a B radar signal. Identification of the radar signal is determined based on the similarity between the pattern of the received radar signal and at least two radar specifications stored in memory. On the other hand, if the received radar signal exactly matches any one of the radar specifications stored in the memory, it will be sufficient to transmit the identification result of the radar signal to another electronic device, but the PRI (pulse repetition interval) and size may change over time. There is a problem in that it is difficult to derive accurate identification results from radar signals with complex patterns. The present invention describes a method in which an electronic device distinguishes between a radar signal with a complex pattern and a radar signal with a simple pattern and derives identification results in different ways through one or more steps below.

The electronic device compares the received radar signal with the radar specifications stored in the memory, and if no change in the pattern over time is detected, it is judged to be a signal of a simple pattern. If a change in the pattern is detected, it is judged to be a signal of a complex pattern (S12 ). For example, signals with complex patterns have the characteristic that the PRI or size of the signals changes over time.

In the case of a radar signal with a simple pattern, the electronic device transmits the identification result and accuracy of the received radar signal to another device (S13).

Here, accuracy refers to the accuracy of the identification result, and in the case of simple patterns, the accuracy has a fixed value of 100%.

Even in the case of a radar signal with a complex pattern, the electronic device transmits the identification result and accuracy of the received radar signal to another device (S14).

In one example, in the case of a radar signal with a complex pattern, if the pattern of the received radar signal completely matches the radar specifications, the identification result and accuracy are transmitted to another device. At this time, the accuracy has a value of 100%.

In another example, if a complex pattern of radar signal does not completely match the radar specifications, the identification result and accuracy other than 100% are transmitted to another device. Here, accuracy refers to the accuracy of the identification result, and cannot be 100% because the received radar signal does not completely match the radar specifications. However, if there is a delay in deriving analysis results for complex radar signals, it may pose a significant threat to our military, especially Air Force pilots, in electronic warfare, so even if it is not 100% accurate, identification of received radar signals must be repeated continuously. needs to be

Accordingly, when a radar signal of a complex pattern is received, the electronic device of the present invention transmits the identification result and the accuracy of the identification result to another device if at least part of the complex pattern matches any one of the radar specifications. For example, when a radar signal with a complex pattern is received, the electronic device may transmit the A radar as the identification result and 25%, which is the accuracy calculated for the identification result, to another electronic device. The other electronic device that received this provides both the identification result and the accuracy of the identification result, so that the user of the other electronic device can respond appropriately according to the identification result and its accuracy.

At this time, the electronic device may begin calculating a new identification result and accuracy for the newly received radar signal after or simultaneously with transmitting the identification result and accuracy to another electronic device. When a new identification result and accuracy are calculated for a newly received radar signal, the electronic device can update the previous identification result and accuracy with the new identification result and accuracy and transmit them to another electronic device. For example, even if the identification result for a previously received radar signal is an A radar signal and the accuracy is determined to be 25%, for a radar signal received later, the identification result is a B radar signal and the accuracy is determined to be 30%. The identification results and accuracy can be updated with new identification results and accuracy and transmitted to other electronic devices.

The process of obtaining a new identification result and its accuracy for the received radar signal is repeated until the accuracy of the identification result is calculated to be 100%.

Meanwhile, accuracy is calculated as the ratio between the pattern of radar specifications stored as mission data and the pattern of the received radar signal. For example, the accuracy of the identification result is calculated according to Equation 1.

Equation 1

Tp represents the accuracy, Ap represents the pattern of the received radar signal, and Mp represents the pattern of the radar specifications stored in the mission data. Accuracy is a value for consistency calculated as a result of comparing the patterns of the received radar signal with the radar specifications included in the pre-entered mission data file. The value of accuracy should be calculated as 100% if both the radar specifications and the patterns of the received radar signal match. Those who use other electronic devices, such as aircraft pilots, can increase the survival rate by making various responses according to the calculated accuracy value.

According to the present invention, even if a complex signal pattern of the latest radar is received, not only can the identification result for the received radar signal be quickly delivered, but the accuracy of the identification result can also be calculated and transmitted to another electronic device. There is an advantage in that the survival rate of users or pilots using electronic devices, especially aircraft, can be significantly increased. More specifically, by transmitting the accuracy of the identification result even before the accuracy is sufficiently secured, information about the accurately received radar signal can be provided to the aircraft pilot more quickly, which has the advantage of significantly increasing the pilot's survival rate. There is.

Figure 1b is a flowchart of a threat analysis method based on a radar signal pattern according to another embodiment of the present invention.

Referring to FIG. 1B, the electronic device can receive a radar signal (S21).

The electronic device can identify the received radar signal. For example, the received radar signal may be determined as one of at least two radar signals, such as an A radar signal and a B radar signal. Identification of the radar signal is determined based on the similarity between the pattern of the received radar signal and at least two radar specifications stored in memory. On the other hand, if the characteristics of the received radar signal exactly match any one of the radar specifications stored in memory during the dwell time, it will be sufficient to transmit the identification result of the radar signal to another electronic device, but depending on time, PRI ( There is a problem in that it is difficult to derive accurate identification results from complex patterned radar signals whose pulse repetition interval (pulse repetition interval) and size change. The present invention describes a method in which an electronic device distinguishes between a radar signal with a complex pattern and a radar signal with a simple pattern and derives identification results in different ways through one or more steps below.

The electronic device can compare the characteristics of the received radar signal with the radar specifications stored in the memory and calculate the accuracy for each characteristic (S22). The characteristics of the radar signal include at least one of a frequency pattern, PRI pattern, and PW pattern. The electronic device compares the characteristics of the received radar signal with the radar specifications stored in the memory, for example, in the order of the frequency pattern, PRI pattern, and PW pattern of the received radar signal. Meanwhile, the order of comparison is not limited to the above example.

For frequency patterns, the electronic device determines 100% frequency accuracy if the frequency patterns match perfectly, otherwise it analyzes the frequency patterns at a certain dwell time. If the frequency patterns do not match, the electronic device may calculate frequency accuracy according to the ratio of the frequency patterns of the received radar signal that match the frequency pattern of the pre-stored radar specifications within a specific dwell time.

For the PRI pattern, the electronic device determines the PRI accuracy as 100% if the PRI pattern matches perfectly, otherwise it analyzes the frequency PRI at a specific dwell time. If the PRI patterns do not match, the electronic device can calculate PRI accuracy based on the ratio in which the PRI of the radar signal matches the PRI of the radar specifications within a certain dwell time.

Likewise, in the case of the PW pattern, the electronic device determines the PW accuracy as 100% if the PW pattern completely matches the radar specifications stored in memory, and if not, analyzes the PW at a specific dwell time. If the PW patterns do not match, the electronic device can calculate PW accuracy based on the ratio at which the PW of the radar signal matches the PW of the radar specifications within a certain dwell time.

The electronic device can obtain overall accuracy using at least one of the calculated frequency accuracy, PRI accuracy, and PW accuracy (S23).

The overall accuracy is calculated as the sum of at least one of frequency accuracy, PRI accuracy, and PW accuracy.

The electronic device compares the calculated overall accuracy with a preset threshold, and if the overall accuracy exceeds the preset threshold, transmits the identification result for the received radar signal and the accuracy value of the identification result to another electronic device. (S24).

The electronic device may compare the overall accuracy to a threshold to prevent identification results with too low confidence from being transmitted to other electronic devices. In some cases, a threshold is set not only for the overall accuracy, but also for each individual accuracy, for example at least one of the input accuracy, PRI accuracy and PW accuracy, such that identification is made only if each individual accuracy exceeds the corresponding thresholds. The results and their accuracy may also be transmitted to other electronic devices. At this time, the threshold may be set to 50%.

Meanwhile, the electronic device may perform different corresponding operations based on at least one of the identification result of the received radar signal and the accuracy of the identification result. For example, when another electronic device is a control device of an aircraft, the aircraft may be controlled by the control device with different corresponding operations based on one of the identification results and accuracy of the radar signal received from the electronic device. As another example, if the other electronic device is an information output device installed in an aircraft, for example, a display or speaker, different information may be output depending on the received identification result and its accuracy.

Meanwhile, in one embodiment of the present invention of FIGS. 1A and 1B, the electronic device may be a radar identification device, and the other electronic device may be an information output device installed in an aircraft or a control device of the aircraft.

2A and 2B are schematic reference diagrams of a threat analysis method according to an embodiment of the present invention. Figure 2a shows a simple pattern, and Figure 2b shows a complex pattern.

Figure 2a shows a case where the input signal pattern is a simple pattern. For example, a simple pattern has a value of 1 us for PW and 8 us for PRI, and the size of each pattern is repeated consistently. The electronic device according to the present invention, preferably a radar identification device, can generate an analysis result by comparing the received input signal with a mission data file if it is a simple pattern. The analysis result may be generated, for example, with the radar type being A and the accuracy of the analysis result being 100%.

Figure 2b shows a case where the pattern of the input signal is a complex pattern. For example, in a complex pattern, PW is kept constant at 0.48 us, but PRI is 60 us, 63 us, 66 us, 72 us, 78 us, 83 us, 89 us, 92 us depending on dwell time. , changes to 60 us. Additionally, the size of each pattern may vary. In this case, the radar identification device transmits the results analyzed during a predetermined identification time to another electronic device, preferably an information output device provided in the aircraft, such as a display and /Or it can be transmitted to a speaker device.

Figure 3 is a block diagram of an electronic device applicable to an embodiment of the present invention.

Referring to FIG. 3 , the electronic device 1 includes a memory 10, a transceiver 20, and a processor 30.

The memory 10 may be connected to a processor and may store various types of data, signals, messages, information, programs, codes, or instructions. Memory may consist of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer readable storage media, and/or combinations thereof. Memory may be located internal and/or external to the processor. Additionally, memory can be connected to the processor through various technologies, such as wired or wireless connections.

The transceiver 20 can transmit or receive user data, control information, wireless signals/channels, etc. to other devices. For example, a transceiver can be connected to a processor and transmit and receive wireless signals. For example, the processor may control the transceiver to transmit user data, control information, or wireless signals to another device. Additionally, the processor may control the transceiver to receive user data, control information, or wireless signals from another device. Additionally, the transceiver may be connected to an antenna, and the transceiver may be set to transmit and receive user data, control information, wireless signals/channels, etc. through the antenna.

Processor 30 may be referred to as a controller, microcontroller, microprocessor, or microcomputer. A processor may be implemented by hardware, firmware, software, or a combination thereof. For example, an Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), or Field Programmable Gate Arrays (FPGA) may be included in the processor. Methods according to various embodiments of the present invention may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. Firmware or software configured to perform methods according to various embodiments of the present invention may be included in the processor or stored in memory and driven by the processor.

The above-described present invention can be implemented as computer-readable code on a program-recorded medium. Computer-readable media includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. Includes. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (11)

In a threat analysis method based on radar signal patterns by electronic devices,
Receiving a radar signal;
determining the received radar signal as one of the first and second signals based on changes in signal patterns over time; -If the signal pattern changes over time, it is the first signal. If it does not change, it is the second signal.
Identifying a radar corresponding to the radar signal according to the pattern configuration of the received radar signal; and
transmitting the identification result for the received radar signal and the accuracy of the identification result to another electronic device;
Including,
If it is determined to be a second signal, the identification result for the received radar signal and the accuracy of the identification result are transmitted to another electronic device, and the accuracy is provided as 100%,
In the case of the first signal, the accuracy is calculated based on the degree to which at least part of the pattern of the received radar signal matches the pattern of any one of the radar specifications stored in the memory.
According to paragraph 1,
A threat analysis method based on a radar signal pattern, wherein the signal pattern includes at least one of PRI, PW, and size.
According to paragraph 1,
In the step of identifying the radar, a threat analysis method based on a radar signal pattern in which, in the case of the first signal, it takes more time to identify the radar than in the case of the second signal.
delete According to paragraph 1,
The identifying step compares the pattern of the received radar signal with the pattern of the radar specifications stored in the memory to determine the received radar signal as one of the stored radar specifications. A threat analysis method based on a radar signal pattern.
delete According to paragraph 1,
Accuracy is calculated according to the equation below, where Tp represents accuracy, Ap represents the pattern of the received radar signal, and Mp represents the pattern of radar specifications stored in the mission data.

Threat analysis method based on radar signal patterns.
According to paragraph 1,
In the case of the first signal, the identifying step and the transmitting step are repeated until the accuracy of the identification result is calculated to be 100%.
According to paragraph 1,
In the case of a first signal, the identifying step and the transmitting step are repeated until the first signal is not detected.
In an electronic device for analyzing threats based on radar signal patterns,
The electronic device includes a memory, a transceiver, and a processor, where the processor:
Receiving a radar signal;
An operation of determining a received radar signal as one of a first signal and a second signal based on changes in signal patterns over time; -If the signal pattern changes over time, it is the first signal. If it does not change, it is the second signal.
Identifying a radar corresponding to the radar signal according to the pattern configuration of the received radar signal; and
An operation of transmitting an identification result for a received radar signal and an accuracy of the identification result to another electronic device;
Do this,
If it is determined to be a second signal, the identification result for the received radar signal and the accuracy of the identification result are transmitted to another electronic device, and the accuracy is provided as 100%,
In the case of the first signal, the accuracy is calculated according to the degree to which at least part of the pattern of the received radar signal matches the pattern of any one of the radar specifications stored in the memory.
In a recording medium readable by a computer system on which a program for executing a threat analysis method based on a radar signal pattern is recorded on a computer system, the threat analysis method based on a radar signal pattern includes:
Receiving a radar signal;
determining the received radar signal as one of the first and second signals based on changes in signal patterns over time; -If the signal pattern changes over time, it is the first signal. If it does not change, it is the second signal.
Identifying a radar corresponding to the radar signal according to the pattern configuration of the received radar signal; and
Transmitting the identification result of the received radar signal and the accuracy of the identification result to another electronic device;
Including,
If it is determined to be a second signal, the identification result for the received radar signal and the accuracy of the identification result are transmitted to another electronic device, and the accuracy is provided as 100%,
In the case of the first signal, the accuracy is calculated according to the degree to which at least part of the pattern of the received radar signal matches the pattern of any one of the radar specifications stored in the memory.