KR102330918B1 - Method and apparatus for processing radar signals in electronic warfare systems - Google Patents

Abstract

The present invention relates to a method and an apparatus for processing radar signals in an electronic warfare system and, more specifically, to a method and an apparatus for processing radar signals in an electronic warfare system, which generates and stores pulse description words (PDW) header information to efficiently measure, analyze, and display various types of radar signals. According to an embodiment of the present invention, a method for processing radar signals in an electronic warfare system comprises: a tuning range setting step of setting a RF receiver to tune to the frequency of a band to be collected; a measurement range setting step of individually setting a PDW information measurement range for each of a plurality of real-time pre-processing filters to tune to the frequency of a set band and collect PDW information for each of a plurality of received radar signals; a collection condition setting step of individually setting a collection time and collection number for PDW information collection for each of the plurality of real-time pre-processing filters; a PDW storage step of generating and storing real-time PDW information for each of the plurality of real-time pre-processing filters based on the set collection conditions; and a PDW header information storage step of generating and storing PDW header information, which is summary information on the PDW information, for each of the plurality of real-time preprocessing filters.

Description

Method and apparatus for processing radar signals in electronic warfare systems

The present invention relates to an apparatus and method for processing a radar signal in an electronic warfare system, and more particularly, by generating PDW (Pulse Detail Data: Pulse Description Words) header information to efficiently measure, analyze, and display various types of radar signals. It relates to a radar signal processing apparatus and method of an electronic warfare system for storing.

The content described in this section merely provides background information for the present embodiment and does not constitute the prior art.

The electronic warfare system, electronic warfare collection system, electronic warfare receiver, jammer receiver, etc. perform a series of processing to measure, analyze, and display radar signals. In particular, in a high-density signal environment in which multiple signals and complex signals are received, electronic warfare systems and the like must perform a process of identifying, analyzing, and displaying radar signals at high speed.

To this end, the electronic warfare system measures the frequency, pulse width, pulse arrival time, and pulse signal strength of the received radar signal, stores it in the memory in the form of pulse detailed data (PDW), and reads it into SBC (Single Board Computer) for analysis perform identification.

Korean Patent Registration No. 10-1473761 (a method for processing a radar signal) generates detailed pulse data for a radar signal received from an electronic warfare system. Korean Patent Registration No. 10-1473761 discloses a PDW measurement step of collecting Pulse Description Words (PDW) for a preset time from a signal received through a frequency of the tuned band when tuned to a frequency of a band to be collected; a pre-processing filtering step of filtering the collected PDW based on a preset filtering parameter value and storing the filtered result in a first memory and a second memory; a signal determination step of checking the number of first PDWs stored in the first memory and determining whether a pulse Doppler radar signal exists as a result of the check; and when it is determined that the pulse Doppler radar signal exists as a result of the determination, reading the first PDW stored in the first memory and analyzing and identifying the pulse Doppler radar signal based on the read first PDW signal processing step.

As described above, in the conventional electronic warfare system, pulse detailed data according to frequency, pulse width, pulse arrival time, pulse signal strength, etc. are generated based on preset parameter values for the received radar signal.

However, when performing signal analysis using the generated and stored detailed pulse data, it is cumbersome to check whether an appropriate number of PDW information is collected in the prior art. That is, in the prior art, a very cumbersome procedure had to be performed, such as using a method of reading and checking the stored PDW information.

In addition, in the conventional system, when the analysis is performed using the stored PDW information, the automatic analysis operation can be performed using a preset algorithm. However, it was difficult for an operator (a commander in a military operating environment) to make a quick and intuitive judgment using the displayed or displayed information before automatic analysis was performed. In particular, when there are a plurality of received radar signals and there are several objects to be analyzed, there is a problem that the analysis takes a lot of time.

In a special environment such as a military operation environment, accurate analysis is important, but quick judgment is also very important. This is because the results of analysis and judgment are prioritized in protecting our allies and homeland. Therefore, in the electronic warfare system, there is a need for a method that can simplify the environment for analysis and display or display PDW information only for the target to be analyzed for quick analysis and judgment of the collected radar signal.

Korean Patent Publication No. 10-1473761 (Method for processing radar signal)

Accordingly, it is an object of the present invention to provide a radar signal processing apparatus and method capable of efficiently performing measurement, analysis, and display of a radar signal used in electronic warfare.

Another object of the present invention is to provide an apparatus and method for processing a radar signal that enables efficient information collection by individually setting a collection condition of a plurality of real-time pre-processing filters to collect PDW information for a plurality of radar signals.

Another object of the present invention is to provide a radar signal processing apparatus and method capable of efficiently generating and storing PDW information by individually setting the collection time and collection number of a plurality of real-time preprocessing filters.

Another object of the present invention is to provide a radar signal processing apparatus and method for generating PDW header information, which is summary information or index information for PDW information, in connection with PDW information generated for a plurality of real-time preprocessing filters, respectively.

Another object of the present invention is to provide an apparatus and method for processing a radar signal that simplifies a signal analysis environment so that PDW header information, which summarizes PDW information, checks the PDW collection status in advance, and indexes and uses PDW information efficiently. .

In order to solve the above technical problems, a radar signal processing method of an electronic warfare system according to an embodiment of the present invention includes a tuning range setting step of setting an RF receiver to tune to a frequency of a band to be collected; A measurement range setting step of individually setting a PDW information measurement range for each of a plurality of real-time pre-processing filters in order to tune to a frequency of a set band and collect PDW information for a plurality of received radar signals; a collection condition setting step of individually setting a collection time and collection number for PDW information collection for each real-time pre-processing filter for a plurality of real-time pre-processing filters; a PDW storage step of generating and storing real-time PDW information for each of a plurality of real-time pre-processing filters based on the set collection conditions; and a PDW header information storage step of generating and storing PDW header information, which is summary information on PDW information, for each of the plurality of real-time preprocessing filters.

Preferably, the PDW header information includes: collection start time, collection end time, number of collections, collection end conditions, maximum frequency, minimum frequency, maximum pulse width, minimum pulse width, maximum signal strength and antenna orientation for each real-time preprocessing filter. It includes the value, the minimum signal strength, the antenna orientation, and the pulse density.

Preferably, based on the PDW header information, it is determined whether the collected PDW information satisfies a preset analysis condition for each of the plurality of real-time pre-processing filters.

Preferably, if the analysis condition is satisfied, analysis and display are performed using the stored PDW information and PDW header information, but analysis and display are performed using only the PDW information and PDW header information for the object to be analyzed. includes

A radar signal processing apparatus of an electronic warfare system according to an embodiment of the present invention for achieving the above object includes: an RF receiver configured to tune to a frequency of a band to be collected; a plurality of real-time pre-processing filters that are tuned to a frequency of a set band and individually set a PDW information measurement range and a PDW information collection condition for collecting PDW information for a plurality of received radar signals; a first memory for generating and storing PDW information in real time based on the individually set PDW information measurement range and collection condition for each of the plurality of real-time pre-processing filters, and separately storing the PDW information for each real-time pre-processing filter; and a second memory for generating and storing PDW header information, which is index information for PDW information collected by a plurality of real-time pre-processing filters stored in the first memory, and separately storing the PDW header information for each real-time pre-processing filter; The information is characterized in that it is used to check the collection status of the PDW information acquired through each real-time pre-processing filter, and to perform analysis and display using the stored PDW information.

Preferably, the control unit includes a control unit that selects and adjusts elements of the PDW header information and determines whether a collection state of PDW information collected for each real-time pre-processing filter is sufficient for analysis by using the PDW header information.

Preferably, the control unit determines the radar signal of the analysis target, controls the display using the corresponding PDW information, and controls the index and initial analysis of the stored PDW information using the corresponding PDW header information.

Preferably, the controller controls the display of PDW information collected for each of the plurality of real-time pre-processing filters in a graph, and differentiates colors and lines for each PDW information.

Preferably, the control unit controls the storage of the PDW information and the PDW header information stored in the first and second memories, and the first and second memories are one memory.

Preferably, the control unit is characterized in that it adjusts the PDW information measurement range and PDW information collection conditions set for each of the plurality of real-time preprocessing filters.

Preferably, it is characterized in that it comprises an analysis and display unit for analyzing and displaying the PDW information collected for each of the plurality of real-time pre-processing filters.

Preferably, the PDW header information includes: collection start time, collection end time, number of collections, collection end conditions, maximum frequency, minimum frequency, maximum pulse width, minimum pulse width, maximum signal strength and antenna orientation for each real-time preprocessing filter. It is characterized in that it includes a value, a minimum signal strength value, an antenna orientation value, and a pulse density.

Preferably, the PDW information measurement range is characterized in that a frequency range, a pulse width range, and a signal strength range are set for each of the plurality of real-time preprocessing filters.

Preferably, the PDW information collection condition is characterized in that the collection time and the number of collections are set for each of the plurality of real-time preprocessing filters.

An apparatus and method for processing a radar signal according to an embodiment of the present invention performs signal processing on a radar signal to efficiently perform measurement, analysis, and display of a radar signal used in electronic warfare. To this end, the present invention sets the collection conditions of a plurality of real-time pre-processing filters individually to collect a plurality of radar signals, so that PDW information can be efficiently collected for each real-time pre-processing filter. In particular, in the present invention, the collection time and the number of collections of a plurality of real-time pre-processing filters are individually set, and PDW information is generated and stored for each real-time pre-processing filter.

Through such control, the present invention enables each radar signal to be collected under the condition that a plurality of radar signals exist, facilitates analysis for each collected radar signal, and displays the displayed state (graph and analysis value, etc.). It is possible to make it easy for the operator to check even in this case.

In addition, the radar signal processing apparatus and method according to an embodiment of the present invention generates PDW header information, which is summary information on PDW information, in association with PDW information generated for a plurality of real-time pre-processing filters, respectively. The generated PDW header information includes index information that can check the PDW collection status in advance, and simplifies the signal analysis environment so that the stored PDW information can be indexed and used efficiently. Through this configuration, the present invention helps the operator to intuitively and quickly make a decision before automatic analysis is performed.

And, according to the present invention, it is possible to perform a desired analysis, display, or display using only PDW information corresponding to an analysis target among PDW information obtained through a plurality of real-time pre-processing filters.

1 is a block diagram of an electronic warfare system for collecting, measuring, analyzing, and displaying a radar signal according to an embodiment of the present invention.
2 is a detailed configuration diagram of a PDW generator according to an embodiment of the present invention.
3 is an operation flowchart for measuring and collecting a plurality of radar signals in the electronic all-in-one system according to an embodiment of the present invention.
4 is an exemplary diagram of PDW information and PDW header information collected for a plurality of radar signals according to an embodiment of the present invention.
5 is an exemplary diagram illustrating the collection number and collection time set for each real-time pre-processing filter channel in a plurality of real-time pre-processing filter channels in the electronic warfare system according to an embodiment of the present invention.
6 is an exemplary diagram of a graph in which a plurality of real-time pre-processing filter channels are classified through a color or a line, and signal strength versus time is displayed among collected PDW information according to an embodiment of the present invention.
7 is an exemplary diagram of a graph showing signal strength versus time among PDW information collected through a specific channel among a plurality of real-time preprocessing filter channels according to an embodiment of the present invention.
8 is an exemplary diagram of a graph in which a plurality of real-time pre-processing filter channels are classified through a color or a line and displayed time versus frequency among collected PDW information according to an embodiment of the present invention.
9 is an exemplary diagram of a graph indicating time versus frequency among PDW information collected through a specific channel among a plurality of real-time preprocessing filter channels according to an embodiment of the present invention.
10 is an exemplary diagram of a graph in which a plurality of real-time pre-processing filter channels are classified through a color or a line and displayed time versus pulse width among collected PDW information according to an embodiment of the present invention.
11 is an exemplary diagram of a graph showing time versus pulse width among PDW information collected through a specific channel among a plurality of real-time preprocessing filter channels according to an embodiment of the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted.

In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements 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 referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It is apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

1 is a block diagram of a radar signal processing apparatus of an electronic warfare system according to an embodiment of the present invention. The apparatus shown in FIG. 1 collects and measures a radar signal, generates and stores PDW information on the radar signal, and analyzes and displays (or displays) the radar signal using the generated PDW information.

The electronic warfare system includes an antenna 110 for collecting radar signals. The antenna 110 may include an omni-directional receiving antenna for receiving a signal from free space, an antenna arranged in a specific direction to detect a direction, and a high-sensitivity antenna for receiving a signal while physically rotating. The antenna 110 performs a function of receiving a signal from free space even though the shape is different.

The electronic warfare system includes an RF receiver 120 that converts a signal received from the antenna 110 into an intermediate frequency signal that is easy to process. The RF receiver 120 selects a frequency signal in a set range from among the reception frequency ranges received from the antenna 110 and performs receiver tuning to convert the signal into an easy-to-use intermediate frequency signal.

The electronic warfare system includes a PDW generator 130 that outputs a signal converted into an intermediate frequency signal by the RF receiver 120 and measures the specifications of the received signal. The PDW generator 130 measures signal specifications from the output signal of the RF receiver 120 to generate PDW information including PDW header information.

The electronic warfare system includes an analysis/display unit 140 that analyzes and displays a radar signal using the generated PDW information.

2 shows a detailed configuration of the PDW generator 130 according to an embodiment of the present invention.

The PDW generator includes a plurality of real-time preprocessing filters #1 to #3 for generating PDW information from a plurality of radar signals received from the RF receiver 120 . The number of the plurality of real-time preprocessing filters #1 to #3 may vary depending on the capacity of the system.

A plurality of real-time pre-processing filters #1 to #3 sets the PDW information measurement range for the radar signal to be collected. In this case, each real-time preprocessing filter may have a different PDW information measurement range. The PDW information measurement range includes, for example, a frequency range, a pulse width range, and a signal strength range. It is desirable to set and use the PDW information measurement range according to the characteristics of the radar signal for collection.

The plurality of real-time pre-processing filters #1 to #3 sets the PDW information collection condition for the radar signal to be collected. In this case, each real-time preprocessing filter may have different PDW information collection conditions individually. The PDW information collection condition can set the collection time and number of collections. It is preferable to preset and use the collection condition as a value based on an experimental value or an experience value for each characteristic of the radar signal to be collected.

The PDW generator 130 includes a first memory for storing PDW information generated through a plurality of real-time preprocessing filters #1 to #3, and a second memory for storing PDW header information. It is also possible to divide and use the first and second memories by using one memory.

It is preferable that the PDW information and the PDW header information stored in the first and second memories are stored separately for each of the plurality of real-time preprocessing filters #1 to #3. For example, it is preferable to store the PDW information 1 collected by the real-time preprocessing filter #1 in the memory, generate PDW header information 1 in connection with the stored PDW information 1, and store it in the memory. In addition, it is preferable to store the PDW information 2 collected in the real-time pre-processing filter #2 in the memory, generate PDW header information 2 in connection with the stored PDW information 2, and store it in the memory. In addition, it is preferable to store the PDW information 3 collected in the real-time pre-processing filter #3 in the memory, generate PDW header information 3 in connection with the stored PDW information 3, and store it in the memory.

The PDW header information stored in the memory is summary information or index information or index information that can check the collection status of PDW information acquired through each real-time pre-processing filter. Here, in the collection state, it can be determined whether sufficient amounts (collection number, collection time, etc.) have been sufficiently collected for the analysis of the radar signal of the target to be analyzed. For example, when a specific radar signal requires at least 7 signals for analysis, it is determined whether a sufficient amount of PDW information is stored.

In addition to this, elements included in the PDW header information can be used to check the collection status of the PDW information. And elements included in the PDW header information can be selectively adjusted. That is, it is possible to change and adjust the elements of the summary information required by the operator.

The PDW generator 130 includes a control unit that as a whole controls all components included in the PDW generator. The control unit may be a component included in the PDW generator, or a processor included in the electronic warfare system may be used.

The control unit selects and adjusts elements of PDW header information, and determines whether the collection status of PDW information collected for each real-time preprocessing filter is sufficient for analysis using the PDW header information. The control unit determines the radar signal of the analysis target and controls the display using the corresponding PDW information, but controls the indexing and initial analysis of the stored PDW information using the corresponding PDW header information. The control unit controls the display of PDW information collected by a plurality of real-time pre-processing filters in a graph, and differentiates colors and lines for each PDW information. The control unit controls the storage of PDW information and PDW header information stored in the first and second memories. The control unit is characterized in that it adjusts the PDW information measurement range and PDW information collection condition set for each of the plurality of real-time preprocessing filters.

In addition to this, the present invention may include an input interface for an operator's signal input, an output interface for outputting a signal, and other general components included in a computer.

Next, FIG. 3 shows an overall signal flow diagram for processing a radar signal in an electronic warfare system according to an embodiment of the present invention.

The present invention can receive a complex radar signal or a plurality of radar signals through the antenna 110 . At this time, it is necessary to selectively receive a radar signal of a frequency band required by the electronic warfare system. Therefore, the RF receiver 120 is set to selectively receive only a signal of a frequency band required by the electronic warfare system (401).

In 401, the RF receiver 120 tunes the receiver so that a frequency signal of a required band can be received through the antenna 110, and selectively converts the received radar signal into an intermediate frequency signal to facilitate signal processing at the rear end. .

The PDW generator 130 inputs a signal of the RF receiver 120 and generates PDW information and PDW header information. To this end, the measurement range of the real-time pre-processing filter is set preferentially (402).

In 402 , the measurement range setting of the real-time preprocessing filter is a configuration for digital filtering among PDWs generated in the frequency range set by the RF receiver 120 . PDW information generally consists of frequency, signal strength, azimuth, pulse width, and pulse arrival time.

In 402, the measurement range setting of the real-time preprocessing filter sets a frequency range, a signal strength range, an azimuth range, a pulse width range, and the like, and generates and stores PDW information included in the corresponding range through digital filtering. In addition, a series of processes are performed so as not to store PDW information that is not included in the corresponding range.

After setting the real-time pre-processing filter in step 402, a process of setting the collection time and the number of collections for each filter is performed (403). The collection time and collection number for each filter in 403 are configured to set the collection time and collection number for each filter in the range set in 402, respectively. This process will be described in detail with reference to FIG. 5, which will be described later.

When the real-time preprocessing filter is set in 402 and the collection time and the number of collections for each filter are set in 403, the PDW generator 130 generates and stores PDW information according to the set conditions (404). In 404, PDW information is generated for each filter in the range selected in the real-time preprocessing filter setting of 402 and stored. A process of generating and storing PDW information will be described in detail with reference to FIG. 4 to be described later.

The PDW generator 130 generates and stores PDW header information in association with PDW information while generating and storing PDW information ( 405 ). The PDW header information generation in 405 generates and stores PDW header information by summarizing the PDW generation and storage results for each filter that passed the filters in 404 for the range selected in the real-time pre-processing filter setting in 402 . A process of generating and storing PDW header information will be described in detail with reference to FIG. 4, which will be described later.

Next, as shown in FIG. 4 , when PDW information and PDW header information are generated, a process of reading PDW header information for each filter is performed ( 406 ). In step 406, PDW header information 500 shown in FIG. 4 is read for each filter set in step 402.

Then, it is determined whether the PDW information collected for each filter satisfies an analysis condition ( 407 ). In step 407, it is determined whether the number of PDWs collected from among the information collected in FIG. 4 is significant. When it is determined in 407 that the number of PDWs collected is significant, the next step is performed.

That is, in 407, it is checked whether a sufficient number of PDW information has been collected. The number of collections (S503) is generally determined to be meaningful information when there are 7 or more. And the number of collections set according to the characteristics of the signal to be analyzed can be changed.

In another embodiment, it is possible to determine whether the PDW collected for each filter satisfies the analysis condition by checking the pulse density S521 among the PDW header information 500 . Assume that the number for which the number of collections is determined to be significant is 7, and the condition that the pulse density is considered high is about 10 times (70) or more. At this time, if the number of collections (S503) is less than 7 or the pulse density (S521) is confirmed to be high, the collected PDW information of the filter is analyzed in a high-density state where the number of collections is insufficient or excessive analysis is required. It is determined that there is no need, and the PDW reading process 408 for each filter and the automatic or manual analysis process 409 for each filter are not performed.

As described above, after a sufficient number required for PDW information analysis is collected in 407 , PDW information for each filter is read in 408 , and automatic or manual analysis for each filter is performed on the read PDW information ( 409 ).

In step 409 , the automatic analysis is an operation of analyzing signal characteristics using a preset algorithm. And the manual analysis is an operation that supports the process of checking and analyzing the PDW information by the operator by displaying it on various graphs. In the present invention, automatic analysis or manual analysis is performed in units of PDW information collected for each filter in step 409 .

The above processes 401 to 409 are repeatedly performed until the task to be performed by the electronic warfare system is finished, and when there is no more task to be performed, the electronic warfare system ends the task (410).

Next, FIG. 4 shows an embodiment of PDW information and PDW header information collected in an electronic warfare system according to an embodiment of the present invention.

The PDW header information 500 is summary information or index information on the results of PDW information filtered and stored in the memory, respectively, based on a range selected for each real-time pre-processing filter. The PDW header information 500 is stored in association with the stored PDW information generated for each filter.

PDW header information 500 includes real-time preprocessing filter number (S501), collection start time (S502), collection end time (S503), number of collections (S504), collection end condition (S505), maximum frequency value (S506), frequency Includes minimum value (S507), maximum pulse width (S508), minimum pulse width (S509), maximum signal strength and antenna orientation (S510), minimum signal strength and antenna orientation (S511), and pulse density (S512) do. In addition, a plurality of collected PDW information (PDW #1 to PDW #n) is indicated by 510 .

The real-time pre-processing filter number S501 is a number performed in the real-time pre-processing filter setting process 402, the 'real-time pre-processing filter #1' matches the radar signal A, and the 'real-time pre-processing filter # 2' is the radar It is matched with signal B, and 'real-time pre-processing filter #3' can be matched with radar signal C. That is, the real-time pre-processing filter number (S501) consists of as many filters as set in the real-time pre-processing filter setting (402).

The collection start time S502 is a collection start time corresponding to the real-time pre-processing filter #1, and the collection end time S503 is a collection end time corresponding to the real-time pre-processing filter #1. The collection number S504 is the collection number corresponding to the real-time pre-processing filter #1, and the collection termination condition S505 is a collection termination condition flag corresponding to the real-time pre-processing filter #1. The maximum frequency value (S506) represents the maximum value among the frequency values included in PDW #1 to PDW #n corresponding to the real-time pre-processing filter #1, and the minimum frequency value (S507) is the PDW #1 corresponding to the real-time pre-processing filter #1. ~ Indicates the minimum value among the frequency values included in PDW #n. The maximum pulse width value (S508) represents the maximum value among the pulse width values included in PDW #1 to PDW #n corresponding to the real-time pre-processing filter #1, and the minimum pulse width value (S509) corresponds to the real-time pre-processing filter #1. It represents the minimum value among the pulse width values included in PDW #1 to PDW #n. The maximum signal strength value and the antenna orientation value S510 represent the maximum value among the signal intensity values included in PDW #1 to PDW #n corresponding to the real-time preprocessing filter #1 and the antenna orientation value at this time. The minimum signal strength value and the antenna orientation value S511 represent the minimum value among the signal intensity values included in PDW #1 to PDW #n corresponding to the real-time preprocessing filter #1 and the antenna orientation value at this time. Pulse density (S512) is a flag indicating High when the number of significant collections (usually 8 applied) collected in the real-time preprocessing filter #1 is greater than or equal to the number of N times (normally 10 times applied) applied. am.

The PDW header information of 500 is PDW header information on the radar signal A corresponding to the 'real-time pre-processing filter #1'. Accordingly, PDW header information for radar signal B corresponding to 'real-time pre-processing filter #2' and PDW header information for radar signal C corresponding to 'real-time pre-processing filter #3' are also configured, respectively. That is, the PDW header information shown in FIG. 4 consists of as many filters as set in the real-time pre-processing filter setting 402 .

The PDW header information 500 of the present invention configured in this way is used in the automatic analysis for each filter and the manual analysis process 409 .

In one embodiment, in the automatic analysis process for each filter, real-time preprocessing filter number (S501), collection start time (S502), collection end time (S503), number of collections (S504), collection end conditions (S505), pulse density (S512) is available.

In one embodiment, in the manual analysis process for each filter, the real-time preprocessing filter number (S501), the collection start time (S502), the collection end time (S503), the number of collections (S504), the collection end condition (S505), the maximum frequency value (S506) ), frequency minimum value (S507), pulse width maximum value (S508), pulse width minimum value (S509), signal strength maximum value and antenna orientation value (S510), signal strength minimum value and antenna orientation value (S511), and pulse density ( S512) can be used.

In particular, frequency maximum value (S506), frequency minimum value (S507), pulse width maximum value (S508), pulse width minimum value (S509), signal strength maximum value and antenna orientation value (S510), signal strength minimum value and antenna orientation value ( S511) can be checked in advance to schematically check the PDW collection status for each filter before performing the PDW display (display).

Next, FIG. 5 is an exemplary diagram of setting a collection time and number for each real-time preprocessing filter channel when the electronic warfare system collects PDW information according to an embodiment of the present invention.

In the present invention, the real-time preprocessing filter channel #1 (710) is set in the range where the radar signal A exists for the frequency band 700 tuned by the RF receiver 120 to collect PDW information. At this time, the real-time preprocessing filter channel #1 (710) collects PDW information during the collection time of Ta to T0, and the number of collections is set to about 100.

In addition, in the present invention, the real-time preprocessing filter channel #2 720 is set in the range where the radar signal B exists for the frequency band 700 tuned by the RF receiver 120 to collect PDW information. At this time, the real-time preprocessing filter channel #2 720 collects PDW information during the collection time of Ta to T0, and the number of collections is set to about 100.

In addition, according to the present invention, the real-time preprocessing filter channel #3 (730) is set in the range where the radar signal C exists for the frequency band 700 tuned by the RF receiver 120 to collect PDW information. At this time, the real-time preprocessing filter channel #3 (730) collects PDW information during the collection time of Tk to T0, and at this time, the number of collections is set to about 100.

That is, in the present invention, the real-time pre-processing filter channel #1 and the real-time pre-processing filter channel #2 are set to collect PDW information during the collection time of Ta to T0, and for the real-time preprocessing filter channel #3, during the collection time of Tk to T0. It is set to collect PDW information. That is, the present invention sets the number of collections and collection times for each real-time pre-processing filter channel, respectively, and collects and stores PDW header information and PDW information for each set number of collections and real-time pre-processing filter channels set during the collection time. The number of collections and collection time set in this way are set as optimized values based on experimental values to analyze each radar signal.

And, the present invention satisfies the conditions of the set real-time pre-processing filter channel #1, the preset number of 100 collections, and the Ta to T0 collection time, and in performing automatic and manual analysis on the collected information, the real-time pre-processing filter channel # Analysis of the signal characteristics of the Radar signal A signal collected through 1 is performed. In addition, the present invention satisfies the conditions of the set real-time pre-processing filter channel #2, the preset number of 100 collections, and the Ta to T0 collection time, and in performing automatic and manual analysis on the collected information, the real-time pre-processing filter channel Analysis of the signal characteristics of the radar signal B signal collected through #2 is performed. And the present invention satisfies the conditions of the set real-time pre-processing filter channel #3, the preset number of 100 collections, and the Tk to T0 collection time, and in performing automatic and manual analysis on the collected information, the real-time pre-processing filter channel # Analysis of the signal characteristics of the radar signal C signal collected through 3 is performed.

As described above, as an embodiment of the present invention, the conditions of the collection time of the radar signal A and the radar signal C are set differently, and after each signal is collected, in the process of analyzing the signal characteristics, it is to focus on a specific radar signal. It is possible to minimize the time required for signal analysis. For example, when analyzing the real-time pre-processing filter channel #1, only the signal characteristics of the radar signal A are analyzed, and when analyzing the real-time pre-processing filter channel #2, only the signal characteristics of the radar signal B are analyzed, and the real-time pre-processing filter channel #3 When analyzing , it is possible to significantly reduce the time required for analysis by analyzing only the signal characteristics of the radar signal C. In particular, in the signal analysis process, it is possible to use only the PDW information and PDW header information included in the corresponding real-time preprocessing filter number, so that it is possible to prevent access to unnecessary information.

Next, a simulation diagram of a signal collected by setting a real-time pre-processing filter in an electronic warfare system according to an embodiment of the present invention will be described.

In the present invention, radar signal A has a frequency range of 8.7 ~ 9GHz, pulse width 200 ~ 250ns, signal strength -57 ~ -22dBm, and radar signal B has a frequency range of 9.5 ~ 9.8GHz, pulse width 150 ~ 175ns, signal strength -56 ~ -23dBm, and the radar signal C is set to a frequency range of 8.2 ~ 9.9GHz, a pulse width of 50 ~ 100ns, and a signal strength of -55 ~ -50dBm, and the RF receiver 120 is set to be tuned to the range of 8 ~ 10GHz.

In order to measure the PDW information and PDW header information for the radar signal A, the radar signal B, and the radar signal C, the real-time preprocessing filter channel of the present invention is set as follows.

Real-time pre-processing filter #1 is set to a frequency range of 8.6 to 9.1 GHz, pulse width 190 to 260 ns, and signal strength -60 to -20 dBm, and real-time pre-processing filter #2 is frequency range 9.4 to 9.9 GHz, pulse width 140 to 180 ns, signal Set the intensity to -60 ~ -20dBm, and set the real-time preprocessing filter #3 to a frequency range of 8.1 to 10GHz, a pulse width of 25 to 125ns, and a signal strength to -60 to -20dBm.

And, in the present invention, the collection time and the number of collections for each filter are preset to appropriate values based on experimental values for each radar signal. In one embodiment, the collection time of the real-time pre-processing filter #1 can be set to 100 ms, the number of collections can be set to 100, the collection time of the real-time pre-processing filter #2 can be set to 100 ms, and the number of collections can be set to 100, and the The collection time can be set to 200ms, and the number of collections can be set to 100.

In the electronic warfare system according to an embodiment of the present invention in which the above settings are made, the signal that is generated and stored PDW information through the real-time pre-processing filter #1 is the radar signal A, and the PDW information is passed through the real-time pre-processing filter #2 The signal generated and stored is the radar signal B, and the signal in which PDW information is generated and stored through the real-time preprocessing filter #3 is the radar signal C.

At this time, PDW header information for the radar signal A is generated as follows. The real-time preprocessing filter number is #1, the collection start time is 0, the collection end time is 100ms, the number of collections is 24, the collection end condition is the end by time, the maximum frequency is 9GHz, the minimum frequency is 8.7GHz, the maximum pulse width is is 250 ns, the minimum pulse width is 200 ns, the maximum signal strength and antenna orientation are -22 dBm and 90 degrees, the minimum signal strength and antenna orientation are -57 dBm and 90 degrees, and the pulse density is low. .

PDW header information for the radar signal B is generated as follows. The real-time preprocessing filter number is #2, the collection start time is 0, the collection end time is 100ms, the number of collections is 15, the collection end condition is the end by time, the maximum frequency is 9.8GHz, the minimum frequency is 9.5GHz, the maximum pulse width The value is 175ns, the minimum pulse width is 170ns, the maximum signal strength and antenna orientation are -23dBm and 90 degrees, the minimum signal strength and antenna orientation are -56dBm and 90 degrees, and the pulse density is low. do.

PDW header information for the radar signal C is generated as follows. The real-time preprocessing filter number is #1, the collection start time is 0, the collection end time is 100ms, the number of collections is 5, the collection end condition is the end by time, the maximum frequency is 9.9GHz, the minimum frequency is 8.2GHz, the maximum pulse width The value is 100ns, the minimum pulse width is 50ns, the maximum signal strength and antenna orientation are -50dBm and 90 degrees, the minimum signal strength and antenna orientation are -55dBm and 90 degrees, and the pulse density is low. do.

Next, Figure 6 is an exemplary diagram of a time vs. signal strength graph used in the manual analysis of the electronic warfare system according to an embodiment of the present invention.

In the present invention, in analyzing a plurality of radar signals, automatic analysis performed based on a preset algorithm and manual analysis displayed in a simple graph or the like are performed. In particular, the present invention utilizes PDW header information in the manual analysis process so that an operator can quickly and easily make a decision. In addition, the present invention utilizes a plurality of real-time preprocessing filters, but by generating and storing PDW information and related PDW header information for each filter, the utility in the manual analysis process is increased.

According to the present invention, an embodiment in which colors or lines are displayed differently according to real-time pre-processing filter numbers during manual analysis is shown. In this way, the operator can easily distinguish each radar signal through the color and line separated by the real-time pre-processing filter number.

According to the illustrated embodiment, the time versus signal strength graph among the PDW information generated by the real-time pre-processing filter #1 is indicated by black/solid lines, and the time versus signal strength graph among the PDW information generated by the real-time pre-processing filter #2. is indicated by a red/solid line. In addition, the time versus signal strength graph among the PDW information generated by the real-time preprocessing filter #3 is indicated by blue and dashed-dotted lines. If the PDW information is displayed by dividing by real-time pre-processing filter number in this way, it becomes possible for the operator to easily distinguish three radar signals during manual analysis.

And FIG. 7 is an exemplary diagram of a time versus signal strength graph used for analysis of an electronic warfare system according to an embodiment of the present invention, selectively displaying only the real-time pre-processing filter #1 and the real-time pre-processing filter # 2, and providing it to the operator It is also an example of 7 shows that a specific real-time pre-processing filter number is selected by the operator's selection in the signal analysis process, and it is possible to extract and display only the signal according to the number. Therefore, the present invention allows the operator to easily perform manual analysis through such selective output.

On the other hand, according to the present invention, the following information can be easily checked by checking the PDW header information for each filter stored in the memory before displaying the time vs. signal strength graph for the PDW information as shown in FIGS. 6 and 7 .

6 and 7 show that the antenna constituting the electronic warfare system is a high-sensitivity antenna capable of receiving a signal while physically rotating as needed, but it is assumed that the antenna orientation is fixed at 90 degrees to collect the signal.

It can be seen that the maximum signal strength value of radar signal A and the antenna orientation value (A-1) are -22dBm, 90 degrees, and the minimum signal strength value of the radar signal A and the antenna orientation value (A-2) are -57dBm, 90 degrees. It can also be confirmed that In addition, it can be seen that the maximum signal strength value of the radar signal B and the antenna orientation value (B-1) are -23 dBm, 90 degrees, and the minimum signal strength value and the antenna orientation value (B-2) of the radar signal B are -56 dBm , it can be seen that it is 90 degrees. In addition, it can be seen that the maximum signal strength value of the radar signal C and the antenna orientation value (C-1) are -50dBm and 90 degrees, and the minimum signal strength value and the antenna orientation value (C-2) of the radar signal C are -55dBm , it can be seen that it is 90 degrees.

That is, the present invention uses the PDW header information for each real-time pre-processing filter stored before the display of the radar signal collected through the analysis and display unit 140, the maximum signal strength value for the analysis target and the antenna orientation value, You can easily check the minimum signal strength and antenna orientation. This becomes the basic data for the operator to quickly judge the analysis target.

Next, FIG. 8 is a graph showing frequency values for each radar signal in the electronic warfare system according to an embodiment of the present invention.

According to the illustrated embodiment, among the PDW information generated by the real-time pre-processing filter #1, the frequency graph is displayed with black/solid lines, and among the PDW information generated by the real-time pre-processing filter #2, the frequency graph is displayed with red/solid lines. are doing Also, among the PDW information generated by the real-time preprocessing filter #3, the frequency graph is indicated by blue and dashed-dotted lines. If the PDW information is displayed by dividing by real-time pre-processing filter number in this way, it becomes possible for the operator to easily distinguish three radar signals during manual analysis.

And FIG. 9 is an exemplary diagram of a frequency graph used for analysis of an electronic warfare system according to an embodiment of the present invention, selectively displaying only the real-time pre-processing filter #1 and the real-time pre-processing filter # 2, and providing it to the operator am. 9 shows that a specific real-time pre-processing filter number is selected by the operator's selection in the signal analysis process, and it is possible to extract and display only the signal according to it. Therefore, the present invention allows the operator to easily perform manual analysis through such selective output.

Meanwhile, according to the present invention, the following information can be easily checked by checking the PDW header information for each filter stored in the memory before displaying the frequency graph for the PDW information as shown in FIGS. 8 and 9 .

It can be seen that the maximum frequency value (A-1) of the radar signal A is 9 GHz, and the minimum frequency value (A-2) of the radar signal A is 8.7 GHz. In addition, it can be seen that the maximum frequency value (B-1) of the radar signal B is 9.8 GHz, and the minimum frequency value (B-2) of the radar signal B is 9.5 GHz. In addition, it can be seen that the maximum frequency value (C-1) of the radar signal C is 9.9 GHz, and the minimum frequency value (C-2) of the radar signal C is 8.2 GHz.

That is, the present invention uses the PDW header information for each real-time pre-processing filter stored before the display of the radar signal collected through the analysis and display unit 140 to easily check the maximum frequency value and the minimum frequency value for the analysis target. can This becomes the basic data for the operator to quickly judge the analysis target.

Next, FIG. 10 is a graph showing a pulse width value among PDW information in an electronic warfare system according to an embodiment of the present invention.

According to the illustrated embodiment, among the PDW information generated by the real-time pre-processing filter #1, the pulse width graph is indicated by a black/solid line, and among the PDW information generated by the real-time pre-processing filter #2, the pulse width graph is indicated by a red/solid line. is indicated as In addition, among the PDW information generated by the real-time preprocessing filter #3, the pulse width graph is indicated by blue and dashed-dotted lines. If the PDW information is displayed by dividing by real-time pre-processing filter number in this way, it becomes possible for the operator to easily distinguish three radar signals during manual analysis.

And FIG. 11 is an example of selectively displaying only the real-time pre-processing filter #1 and the real-time pre-processing filter # 2 in an exemplary diagram of a pulse width graph used in the analysis of the electronic warfare system according to an embodiment of the present invention, and providing it to the operator It is also 11 shows that a specific real-time pre-processing filter number is selected by the operator's selection in the signal analysis process, and it is possible to extract and display only the corresponding signal. Therefore, the present invention allows the operator to easily perform manual analysis through such selective output.

Meanwhile, according to the present invention, the following information can be easily checked by checking the PDW header information for each filter stored in the memory before displaying the pulse width graph for the PDW information as shown in FIGS. 10 and 11 .

It can be seen that the maximum pulse width value (A-1) of the radar signal A is 250 ns, and the minimum pulse width value (A-2) of the radar signal A is 200 ns. In addition, it can be seen that the maximum pulse width value (B-1) of the radar signal B is 175 ns, and the minimum pulse width value (B-2) of the radar signal B is 150 ns. In addition, it can be seen that the maximum pulse width value (C-1) of the radar signal C is 100 ns, and the minimum pulse width value (C-2) of the radar signal C is 50 ns.

That is, the present invention uses the PDW header information for each real-time pre-processing filter stored before the display of the radar signal collected through the analysis and display unit 140 to easily check the maximum frequency value and the minimum frequency value for the analysis target. can This becomes the basic data for the operator to quickly judge the analysis target.

The above detailed description should not be construed as restrictive in all respects and should be considered as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

110: antenna
120: RF receiver
130: PDW Generator
140: analysis and display

Claims (14)

A tuning range setting step of setting the RF receiver to tune to the frequency of the band to be collected;
A measurement range setting step of individually setting a PDW information measurement range for each of a plurality of real-time pre-processing filters in order to tune to a frequency of a set band and collect PDW information for a plurality of received radar signals;
a collection condition setting step of individually setting a collection time and collection number for PDW information collection for each real-time pre-processing filter for a plurality of real-time pre-processing filters;
a PDW storage step of generating and storing real-time PDW information for each of a plurality of real-time pre-processing filters based on the set collection conditions; and
A radar signal processing method of an electronic warfare system, comprising the step of generating and storing PDW header information, which is summary information on PDW information, for each of a plurality of real-time preprocessing filters. The method according to claim 1,
PDW header information includes: collection start time, collection end time, number of collections, collection end condition, maximum frequency, minimum frequency, maximum pulse width, minimum pulse width, maximum signal strength, antenna orientation, and signal for each real-time preprocessing filter. A radar signal processing method of an electronic warfare system including a minimum intensity value, an antenna orientation value, and a pulse density. 3. The method according to claim 2,
A radar signal processing method of an electronic warfare system for determining whether collected PDW information satisfies a preset analysis condition for each of a plurality of real-time pre-processing filters based on PDW header information. 4. The method according to claim 3,
If the analysis condition is satisfied, analysis and display are performed using the stored PDW information and PDW header information,
A radar signal processing method of an electronic warfare system, comprising an analysis and display step of performing analysis and display using only PDW information and PDW header information on an object to be analyzed. an RF receiver configured to tune to a frequency of a band to be collected;
a plurality of real-time pre-processing filters that tune to a frequency of a set band and individually set a PDW information measurement range and a PDW information collection condition for collecting PDW information for a plurality of received radar signals;
a first memory for generating and storing PDW information in real time based on the PDW information measurement range and collection condition set for each of the plurality of real-time pre-processing filters, and separately storing the PDW information for each real-time pre-processing filter; and
A second memory for generating and storing PDW header information, which is index information for PDW information collected for each of the plurality of real-time pre-processing filters stored in the first memory, and storing the PDW header information separately for each real-time pre-processing filter;
The PDW header information is a radar signal processing device of an electronic warfare system used to check the collection status of the PDW information acquired through each real-time pre-processing filter, and to perform analysis and display using the stored PDW information. 6. The method of claim 5,
A radar signal processing apparatus for an electronic warfare system, comprising: a control unit for selecting and adjusting elements of PDW header information; 7. The method of claim 6,
The control unit determines the radar signal of the analysis target, and controls the display using the corresponding PDW information, but controls the indexing and initial analysis of the stored PDW information using the corresponding PDW header information. 8. The method of claim 7,
The control unit controls the display of PDW information collected by a plurality of real-time pre-processing filters in a graph, and a radar signal processing device of an electronic warfare system that differentiates colors and lines for each PDW information. 7. The method of claim 6,
The control unit controls the storage of PDW information and PDW header information stored in the first and second memories,
The first and second memories are a single memory, a radar signal processing device of an electronic warfare system. 7. The method of claim 6,
The control unit is a radar signal processing device of an electronic warfare system that adjusts a PDW information measurement range and a PDW information collection condition set for each of the plurality of real-time preprocessing filters. 6. The method of claim 5,
A radar signal processing device for an electronic warfare system including an analysis and display unit that analyzes and displays PDW information collected by a plurality of real-time preprocessing filters. 12. The method according to any one of claims 5 to 11,
PDW header information includes: collection start time, collection end time, number of collections, collection end condition, maximum frequency, minimum frequency, maximum pulse width, minimum pulse width, maximum signal strength, antenna orientation, and signal for each real-time preprocessing filter. Radar signal processing device for electronic warfare system including minimum intensity value, antenna orientation value, and pulse density. 12. The method according to any one of claims 5 to 11,
The PDW information measurement range is a radar signal processing device of an electronic warfare system that sets a frequency range, a pulse width range, and a signal strength range for each of a plurality of real-time preprocessing filters. 12. The method according to any one of claims 5 to 11,
The PDW information collection condition is a radar signal processing device of the electronic warfare system that sets the collection time and the number of collections for each of a plurality of real-time preprocessing filters.

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