KR101650880B1 - Apparatus and method for processing radar signal - Google Patents

Apparatus and method for processing radar signal Download PDF

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KR101650880B1
KR101650880B1 KR1020150121857A KR20150121857A KR101650880B1 KR 101650880 B1 KR101650880 B1 KR 101650880B1 KR 1020150121857 A KR1020150121857 A KR 1020150121857A KR 20150121857 A KR20150121857 A KR 20150121857A KR 101650880 B1 KR101650880 B1 KR 101650880B1
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South Korea
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pulse
signal
collection
memory
information
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KR1020150121857A
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Korean (ko)
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심홍석
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한화탈레스 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The present invention relates to a radar signal processing apparatus and a method thereof. More specifically, the radar signal processing apparatus processes radar signals received to a receiver of electronic warfare equipment. According to an embodiment of the present invention, the radar signal processing apparatus includes a signal receiver and a signal analysis device. The signal receiver includes: a pulse description word (PDW) collection unit which collects PDW from signals received within a signal collection section in accordance with the elapsed time; a preprocessing unit which sequentially divides the collection section into predetermined time periods and separates the PDW in accordance with the collection section divided into the time periods; and multiple memory units which individually store the separated PDW. The signal analysis device analyzes and identifies the signals based on the PDW stored to each of the memory units. While the PDW stored in one memory unit is analyzed by the signal analysis device, PDW in the next collection section is stored to another memory unit.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and a method for processing a radar signal,

The present invention relates to an apparatus and method for processing a radar signal, and more particularly, to a radar signal processing apparatus and method for processing a radar signal received by a receiver of an electronic apparatus.

Electronic warfare equipment is equipped with Electronic Warfare Support (ES) function to detect, analyze and identify the radar of fire control / tracking / navigation radar and various missiles, and to report and alert the acquired signal information to the operator. And an electronic warfare attack (EA) function using jamming effects analyzed through analysis and identified data.

Recently, electronic warfare support equipment has to collect signals from several megabytes to several tens of gigahertz, and since it has a wide detection range, it is preferred to use a wide band rather than a narrow band, and reception sensitivity should be good because it is required to collect signals at a long distance.

However, in the case of a Low Probability of Intercept (LPI) radar, it is difficult to process all the signals in the time and frequency domain because it receives the signal source transmitted by itself in the ultra-narrow narrowband. In other words, electronic warfare equipment needs to cover all time and frequency domains, since all available frequencies must be collected in the same time zone.

KR 10-2009-0096913 A

The present invention provides a radar signal processing apparatus and method capable of minimizing a non-collection period of a signal in analyzing a signal in a continuous signal acquisition environment.

A radar signal processing apparatus according to an embodiment of the present invention is a radar signal processing apparatus including a signal receiver and a signal analyzer, wherein the signal receiver receives pulse detail information PDW: Pulse Description Words); A preprocessor for sequentially dividing the collection interval at predetermined time intervals and for dividing the pulse detailed information according to the divided collection interval; And a plurality of memory units for respectively storing the divided pulse detailed information, wherein the signal analyzer performs analysis and identification of signals based on the pulse detailed information stored in each of the memory units, During the analysis of the pulse detail information stored in the one memory section, the pulse detail information of the next collection section is stored in the other memory section.

The plurality of memory units may sequentially store the divided pulse detailed information and store the repeated pulse detailed information.

The signal analyzer may include a timer section that limits the analysis time within a time interval of the divided collection section.

The interface between the signal receiver and the signal analyzer may be via a VPX or VME bus standard.

The pulse detail information classified by the preprocessing unit may have different frequencies.

Also, a method of processing a radar signal according to an embodiment of the present invention includes: a pulse detail information collection process for collecting pulse detail information (PDW) from a signal received within a signal acquisition interval according to time; A first memory process for sequentially dividing the collection interval at predetermined time intervals and storing pulse detail information in a first pulse detailed information collection interval in a first memory unit; A signal analyzing step of analyzing and identifying a signal based on pulse detail information stored in the first memory; And a second memory process for storing pulse detail information in a second pulse detailed information collection interval following the first pulse detailed information collection interval in a second memory unit, wherein the signal analysis process and the second memory process are simultaneously performed .

The first memory unit and the second memory unit may alternately store the pulse detail information in each of the sequentially divided acquisition intervals.

According to the apparatus and method for processing a radar signal according to an embodiment of the present invention, a plurality of memories included in a signal receiver are used to continuously analyze signals received from one memory, The non-collection interval can be minimized.

In addition, by sequentially dividing the collection interval according to the time, and storing detailed information of pulses having different frequencies for each divided collection interval, analysis and identification are performed, Can be covered.

FIG. 1 is a diagram for explaining a signal processing process of a conventional radar signal processing apparatus. FIG.
2 is a view schematically showing a radar signal processing apparatus according to an embodiment of the present invention.
3 is a diagram for explaining a signal processing process of a radar signal processing apparatus according to an embodiment of the present invention.
FIG. 4 schematically shows a radar signal processing method according to an embodiment of the present invention; FIG.

The apparatus and method for processing a radar signal according to the present invention provide a technical feature capable of minimizing a signal collection period in analyzing a signal in a continuous signal collection environment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, Is provided to fully inform the user. Wherein like reference numerals refer to like elements throughout.

1 is a diagram for explaining a signal processing process of a conventional radar signal processing apparatus.

Electronic warfare support equipment analyzes and identifies radar signal sources outside the detection range of the radar and abbreviates the final electronic warfare equipment or Command, Control, Communication, Computer and Intelligence. It must be capable of attacking or attacking threats by propagating to the C4I network of command and control and communication systems.

Recently, electronic warfare support equipment has to collect signals from several megabytes to several tens of gigahertz, and since it has a wide detection range, it is preferred to use a wide band rather than a narrow band, and reception sensitivity should be good because it is required to collect signals at a long distance.

However, in the case of a Low Probability of Intercept (LPI) radar, it is difficult to process all the signals in the time and frequency domain because it receives the signal source transmitted by itself in the ultra-narrow narrowband. In other words, electronic warfare equipment needs to cover all time and frequency domains, since all available frequencies must be collected in the same time zone.

1, the signal receiver 10 is constituted by one memory unit 13, and the pulse detail information (PDW) stored in the memory unit 13 is stored in the memory unit 13, The signal analyzer 20 inevitably generates an undetected section of the signal.

Since the analysis time of the signal is exponentially increased according to the collection amount of the data, the signal collection time of the conventional electronic warfare supporting equipment There is a problem in that a section for collecting no signal is significantly increased over time.

2 is a view schematically showing a radar signal processing apparatus according to an embodiment of the present invention.

2, a radar signal processing apparatus according to an embodiment of the present invention is a radar signal processing apparatus including a signal receiver 100 and a signal analyzer 200, A pulse detail information collection unit 110 for collecting pulse description words (PDW) from a signal received within a collection interval of a signal; A preprocessor 120 for sequentially dividing the collection interval at predetermined time intervals and dividing the pulse detailed information according to the divided collection interval; And a plurality of memory units (130, 135) for storing the divided pulse detailed information, respectively, and the signal analyzer (200) is configured to receive the pulse detailed information stored in the memory units (130, 135) And the detailed information of the pulse of the next collection interval is stored in the other memory unit 135 while the pulse analyzer 200 analyzes the pulse detailed information stored in the one memory unit 130. [

Here, the pulse detailed information collecting unit 110, the preprocessing unit 120, and the plurality of memory units constitute the signal receiver 100. That is, the signal receiver 100 is configured to receive RF or IF signals and generate pulse detail information for analysis via an analog-to-digital converter (ADC).

The pulse detailed information collecting unit 110 collects pulse detailed information from a signal received within a collection period of a signal with a passage of time. Herein, the collecting interval means a collecting area of the signal according to the passage of time of receiving the signal.

The preprocessing unit 120 sequentially divides the signal collection interval at predetermined time intervals and identifies the pulse detailed information collected from the pulse detailed information collection unit 110 according to the divided collection interval. That is, the preprocessing unit 120 divides the signal acquisition interval into predetermined time intervals so as to have a sufficient time for analysis and identification of the general radar signal, and stores the detailed pulse information collected according to the time range of each divided acquisition interval It is classified. For example, when the time range is set to 12 times the pulse repetition period, the value obtained by multiplying the pulse repetition period of the general radar signal by 12 may be set to the time range of the divided collection period.

In addition, the pulse detailed information classified by the preprocessing unit 120 may have different frequencies. That is, the signal receiver 100 receives signals having different frequency bands for each collection interval divided at predetermined time intervals, and the pulse detailed information collection unit 110 collects pulse detailed information of each frequency band, It becomes possible to analyze and identify the signal having the frequency band having the maximum range.

The plurality of memory units 130 and 135 store the detailed pulse information classified according to the collection interval divided at predetermined time intervals. The number of memory units does not have to be the same as the number of divided acquisition intervals. If the number of memory units is smaller than the number of divided acquisition intervals, divided detailed pulse information can be sequentially stored in each memory unit. For example, in the case of dividing the signal collection interval into the first pulse detailed information collection section, the second pulse detailed information collection interval, the third false detailed information collection interval, and the fourth pulse detailed information collection interval, The second detailed information collection section, and the third detailed pulse information collection section are sequentially stored in the first memory section, the second memory section, and the third memory section, and the fourth pulse The pulse detailed information divided into the detailed information collection section is stored again in the first memory section and is repeated, so that detailed pulse information of all the collection sections can be repeatedly stored in each memory section. Hereinafter, for convenience of explanation, the radar signal processing apparatus including the two memory units of the first memory unit 130 and the second memory unit 135 will be described as an example, but the number of the memory units is not limited thereto Of course.

The signal analyzer 200 performs signal analysis and identification based on pulse detailed information stored in each of the plurality of memory units 130 and 135. Herein, while the pulse analyzer 200 analyzes the pulse detailed information stored in the first memory unit 130, the second memory unit 135 stores pulse detailed information of the next acquisition interval. A detailed description of the general process of analyzing and identifying the radar signal based on the pulse detailed information is omitted and the process of analyzing the pulse detailed information by the signal analyzer 200 and storing the detailed pulse information of the next collection interval simultaneously This will be described in detail below.

3 is a diagram for explaining a signal processing process of the radar signal processing apparatus according to an embodiment of the present invention with time.

3, the preprocessing unit 120 configuring the signal receiver 100 includes a first pulse detailed information collection interval having a predetermined time interval, a second pulse detailed information collection interval, The detailed information collecting section of the bulls and the fourth pulse detailed information collecting section.

First, when the signal analyzer 200 requests the signal receiver 100 to collect pulse detailed information of the first pulse detailed information collection interval for analysis, the pulse detailed information collecting unit 110 collects the detailed pulse information The pulse detail information is collected, and the collected pulse detail information is stored in the first memory unit 130. When the pulse detailed information of the first pulse detailed information collection interval is stored in the first memory unit 130, the signal receiver 100 makes an analysis request to the signal analyzer 200, And performs analysis and identification of the signal based on the pulse detailed information stored in the controller 130. The pulse detail information stored in the first memory unit 130 may be removed after the analysis and identification of the signal is completed.

Here, the signal analyzer 200 may acquire detailed pulse information of the second pulse detailed information collection interval in the signal receiver 100 before performing analysis and identification of the signal based on the pulse detailed information stored in the first memory unit 130, Make a request. Accordingly, while the signal analyzer 200 performs analysis and identification of the signal based on the pulse detail information stored in the first memory unit 130, the pulse detail information collection unit 110 acquires pulse information Detailed information is collected, and the collected pulse detail information is stored in the second memory unit 135. [

The interface between the signal receiver 100 and the signal analyzer 200 may be configured through a versatile performance switching (VPX) or a versatile module European (VME) bus standard. The interface between the signal receiver 100 and the signal analyzer 200 may be configured through an Ethernet, PCIe, It can be configured to reduce time.

The analysis time of the signal analyzer 200 may be limited within a set time interval of each pulse detailed information collection period in order to minimize the non-collection period of the signal in the continuous signal collection environment. Accordingly, the signal analyzer 200 may include a timer unit for limiting the analysis time within a time interval of a collection interval of the signal divided at predetermined time intervals. When the signal analyzer 200 does not complete the analysis of the signal within the limited analysis time within the set time interval of each pulse detailed information collection interval, the detailed pulse information is stored in a separate memory for detailed analysis. It is also possible to store and analyze it at a later time.

Thereafter, when the pulse detail information of the second pulse detailed information collection interval is stored in the second memory unit 135, the signal receiver 100 requests the signal analyzer 200 to perform analysis, The controller 100 requests the receiver 100 to acquire the detailed pulse information of the third pulse detailed information collection interval and then analyzes and identifies the signal based on the detailed pulse information stored in the second memory unit 135. [ Accordingly, while the signal analyzer 200 performs the analysis and identification of the signal based on the detailed pulse information stored in the second memory 135, the pulse detailed information collection unit 110 acquires the third pulse detail The pulse detail information is collected in the information collecting section, and the collected pulse detailed information is stored in the first memory section 130 again. The radar signal processing apparatus according to the embodiment of the present invention repeats the above process so that the signal analyzer 200 can analyze and identify the radar signal received from the signal receiver 100 while minimizing the non- do.

4 is a diagram schematically showing a radar signal processing method according to an embodiment of the present invention. In explaining the radar signal processing method according to the embodiment of the present invention, the description of the radar signal processing apparatus will be omitted.

A method of processing a radar signal according to an exemplary embodiment of the present invention includes a pulse detailed information collection step (S100) of collecting pulse detailed information (PDW) from a signal received in a signal acquisition interval according to time; A first memory process (S300) of sequentially dividing the collection interval at a predetermined time interval (S200) and storing pulse detail information in the first pulse detailed information collection interval in the first memory unit (130); A signal analysis step (S400) of analyzing and identifying a signal based on the pulse detail information stored in the first memory unit (130); And a second memory unit (S500) for storing pulse detail information in a second pulse detailed information collection interval following the first pulse detailed information collection interval in a second memory unit (135), wherein the signal analysis step (S400) ) And the second memory process (S500) are performed simultaneously.

In the pulse detailed information collection process S100, the pulse detailed information collection unit 110 collects pulse detailed information from a signal received in a signal acquisition interval according to time. The collection of the pulse detailed information is performed continuously until the analysis by the signal analyzer 200 is completed, that is, within the collection interval of the signal, the pulse detailed information of each of the divided collection intervals is stored in each memory unit.

The total signal collection interval is sequentially divided into N (S200) so as to have a predetermined time interval by the preprocessor 120, and the first one of the divided collection intervals according to the information collection request of the signal analyzer 200 The pulse detailed information in the pulse detailed information collection section is stored in the first memory unit 130 (S300).

When the pulse detailed information in the first pulse detailed information collection interval is stored in the first memory unit 130, the signal receiver 100 makes an analysis request to the signal analyzer 200, And analyzes and identifies the signal based on the pulse detailed information stored in the controller 130 (S400).

In addition, the signal analyzer 200 may also be configured to provide the signal receiver 100 with the next pulse of the first pulse detailed information collection interval before performing analysis and identification of the signal based on the pulse detailed information stored in the first memory unit 130. [ And requests detailed information of the pulse of the second pulse detailed information collecting section of the section. Therefore, the pulse detailed information collection unit 110 collects pulse detailed information in the second pulse detailed information collection interval separately from the signal analysis process as described above, and stores the collected pulse detailed information in the second memory unit 135 (S500).

A signal analysis process (S400) for analyzing and identifying signals based on the pulse detail information stored in the first memory unit 130 and the pulse detail information in the second pulse detail information collection interval are performed in the second memory unit 135 (S500) are simultaneously performed, and the radar signal received from the signal receiver 100 is continuously analyzed and identified by the signal analyzer 200. The second memory process

The process of analyzing the signal based on the already stored pulse detail information and the process of storing the pulse detail information in the next pulse detail information collection interval may be performed by the first memory unit 130 and the second memory unit 135, Pulse Detailed Information The pulse details in the acquisition interval are alternately stored and repeated.

That is, a signal analysis process (S600) for analyzing and identifying a signal based on the pulse detail information of the (N-1) th pulse detail information collection interval and the pulse detail information of the (N) After the process S700 is performed simultaneously, the signal analyzer 200 performs signal analysis and identification (S800) on the basis of the pulse detail information of the N-th pulse detail information collection period to process the radar signal do.

As described above, according to the apparatus and method for processing a radar signal according to an embodiment of the present invention, a plurality of memories included in a signal receiver are configured to continuously collect signals by another memory while analyzing signals received from one memory. Thereby minimizing the non-collection period of the signal.

In addition, by sequentially dividing the collection interval according to the time, and storing detailed information of pulses having different frequencies for each divided collection interval, analysis and identification are performed, . ≪ / RTI >

While the preferred embodiments of the present invention have been described and illustrated above using specific terms, such terms are used only for the purpose of clarifying the invention, and the embodiments of the present invention and the described terminology are intended to be illustrative, It will be obvious that various changes and modifications can be made without departing from the spirit and scope of the invention. Such modified embodiments should not be individually understood from the spirit and scope of the present invention, but should be regarded as being within the scope of the claims of the present invention.

100: signal receiver 110: pulse detail information collecting unit
120: preprocessing unit 130: first memory unit
135: second memory unit 200: signal analyzer

Claims (7)

A radar signal processing apparatus comprising a signal receiver and a signal analyzer,
The signal receiver comprising:
A pulse detail information collecting unit for collecting pulse description words (PDW) from a signal received within a collection period of a signal according to a passage of time;
A preprocessor for sequentially dividing the collection interval at predetermined time intervals and for dividing the pulse detailed information according to the divided collection interval; And
And a plurality of memory units for respectively storing the divided pulse detailed information,
Wherein the signal analyzer analyzes and identifies signals based on the pulse detail information stored in each memory unit,
Wherein the signal analyzer analyzes the stored detailed pulse information when the detailed pulse information is stored in one of the plurality of memory units,
While the pulse detail information stored in one of the memory units is analyzed by the signal analyzer, the pulse detail information collection unit continuously collects pulse detail information of the next collection interval, and the other one of the plurality of memory units And the pulse information storage unit stores the pulse detail information of the collected collection section.
The method according to claim 1,
Wherein the plurality of memory units sequentially and repeatedly stores the divided pulse detailed information.
The method according to claim 1,
Wherein the signal analyzer comprises a timer section for limiting the analysis time within a time interval of the divided collection section.
The method according to claim 1,
Wherein the interface between the signal receiver and the signal analyzer is implemented via a VPX or VME bus standard.
The method according to claim 1,
Wherein the pulse detailed information classified by the preprocessor has different frequencies.
A pulse detail information collection process for collecting pulse description words (PDW) from a signal received in a collection interval of a signal according to a time;
A first memory process for sequentially dividing the collection interval at predetermined time intervals and storing pulse detail information in a first pulse detailed information collection interval in a first memory unit;
A signal analyzing step of analyzing and identifying a signal based on pulse detail information stored in the first memory; And
And a second memory for storing pulse detail information in a second pulse detailed information collection interval following the first pulse detailed information collection interval in a second memory unit,
The pulse detail information collection process is continuously performed during the signal analysis process,
Wherein the signal analysis process and the second memory process are simultaneously performed.
The method of claim 6,
Wherein the first memory unit and the second memory unit alternately store the pulse detail information in each of the sequentially divided divided intervals.
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KR20190132899A (en) * 2018-05-21 2019-11-29 엔비노드 주식회사 Advanced pulse signal analysis system and method for shipboard
KR102330918B1 (en) * 2020-08-05 2021-12-01 엘아이지넥스원 주식회사 Method and apparatus for processing radar signals in electronic warfare systems
KR102356429B1 (en) * 2020-09-22 2022-02-07 엘아이지넥스원 주식회사 Method and system for signal processing based on adaptive hprf rejection filter

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