KR101517562B1 - Performance Testing Apparatus and Method for Addaptive Array Antenna - Google Patents

Performance Testing Apparatus and Method for Addaptive Array Antenna Download PDF

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Publication number
KR101517562B1
KR101517562B1 KR1020130137640A KR20130137640A KR101517562B1 KR 101517562 B1 KR101517562 B1 KR 101517562B1 KR 1020130137640 A KR1020130137640 A KR 1020130137640A KR 20130137640 A KR20130137640 A KR 20130137640A KR 101517562 B1 KR101517562 B1 KR 101517562B1
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South Korea
Prior art keywords
signal
antenna
virtual
jamming
gnss
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KR1020130137640A
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Korean (ko)
Inventor
김미숙
주정갑
김종성
손석보
윤상준
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넵코어스 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

An apparatus for evaluating performance of an adaptive array antenna that receives a Global Navigation Satellite System (GNSS) signal and includes a plurality of antenna elements includes: a jamming simulator for generating a virtual signal including a virtual propagation disturbance signal; And an antenna hood including a plurality of sub antennas which are opposite to the adaptive array antenna and transmit the virtual signal wirelessly.

Description

TECHNICAL FIELD [0001] The present invention relates to an adaptive array antenna,

The present invention relates to a performance evaluation apparatus and a performance evaluation method of an adaptive array antenna in a GNSS navigation apparatus having a jamming response function.

Global Navigation Satellite System (GNSS) navigation devices such as Global Positioning System (GPS), GLONASS (Global Navigation Satellite System), Beidou Navigation Satellite System (BDS), Galileo and IRNSS It is used for various purposes. The GNSS navigation system has the advantage of providing precise navigation information continuously, but because it utilizes weak signals transmitted from satellites over tens of thousands of km (for example, 20,200 km for GPS), intentional jamming, There is a disadvantage that the function can be lost by an attack.

To overcome these drawbacks, various anti-jamming techniques are applied, and typical anti-jamming techniques are adaptive array antenna techniques. The adaptive array antenna technology adopts two or more antennas unlike a conventional navigation device using a single antenna and considers a signal larger than a satellite signal received from the adopted antenna as a jamming signal, And adjusting the phase and / or size weight of each reception antenna to minimize the jamming signal.

The adaptive array antenna includes a signal processor having a function of using two or more antennas and processing a signal received from the antenna, unlike the conventional navigation device.

The jamming signal cancellation performance of the signal processing unit can be measured or evaluated by simulating the signal received from the array antenna. This method can not perform a performance evaluation on the entire apparatus including the antenna.

On the other hand, the jamming signal cancellation performance for the entire satellite navigation anti-jamming system based on the adaptive array antenna including an antenna can be tested by radiating a jamming signal in an outdoor environment capable of receiving an actual GNSS signal, The jamming signal can be simulated and tested. Testing in an outdoor environment can be difficult to set up an environment for accurate measurement and analysis. Tests in the anechoic chamber have a limitation in that they must be configured to emit jamming signals and GNSS signals.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus and a method for wirelessly radiating a phase plane according to the arrangement of antennas.

An embodiment of the present invention is an apparatus for evaluating performance of an adaptive array antenna that receives a Global Navigation Satellite System (GNSS) signal and includes a plurality of antenna elements, the apparatus comprising: a jamming Simulator; And an antenna hood including a plurality of sub antennas coupled to the adaptive array antenna and wirelessly transmitting the virtual signal. The present invention also provides an apparatus for evaluating performance of an adaptive array antenna.

The number of the plurality of lower antennas is the same as the number of the plurality of antenna elements, and each lower antenna can be located facing each antenna element.

The performance evaluation apparatus of the adaptive array antenna further includes a GNSS simulator for generating a virtual GNSS signal, and the jamming simulator can generate the virtual signal by synthesizing the virtual propagation disturbance signal with the generated GNSS signal.

The performance evaluation apparatus of the adaptive array antenna further includes a GNSS antenna for receiving the GNSS signal from the satellite, and the jamming simulator can generate the virtual signal by synthesizing the virtual propagation disturbance signal with the received GNSS signal.

An apparatus for evaluating performance of an adaptive array antenna receives a virtual signal from the jamming simulator and receives a virtual signal transmitted from the antenna hood in a wireless manner and outputs a signal from the jamming simulator and a signal from the antenna hood And a self-checking device for determining whether the jamming simulator and the antenna hood are operating normally.

Another embodiment of the present invention is an adaptive array antenna system comprising an adaptive array antenna comprising a jamming simulator and an adaptive array antenna and an antenna hood located opposite the adaptive array antenna, the adaptive array antenna receiving GNSS (Global Navigation Satellite System) A method of evaluating performance of an array antenna, comprising: generating a virtual signal including a virtual propagation disturbance signal in the jamming simulator; And transmitting the virtual signal through a plurality of lower antennas of the antenna hood.

The number of the plurality of lower antennas is the same as the number of the antenna elements, and each lower antenna can be located facing each antenna element.

The method of evaluating performance of an adaptive array antenna further includes generating a virtual GNSS signal, wherein the generating of the virtual signal includes adding the virtual propagation disturbance signal to the generated GNSS signal to generate the virtual signal Step < / RTI >

The method of evaluating the performance of an adaptive array antenna may further include the step of receiving a GNSS signal from a satellite, and the step of generating the virtual signal may include adding the virtual propagation disturbance signal to a received GNSS signal to generate the virtual signal Step < / RTI >

The apparatus for evaluating performance of an adaptive array antenna further includes a self-test apparatus, and a method for evaluating performance of the adaptive array antenna includes: receiving the virtual signal from the self-test apparatus from the jamming simulator; Receiving a virtual signal wirelessly transmitted from the antenna hood; And the self-checking device may further include comparing the signal from the jamming simulator and the signal from the antenna hood to determine whether the jamming simulator and the antenna hood are operating normally.

According to the present invention described above, the performance and function of the adaptive array antenna for GNSS signal reception can be evaluated by radiating the phase plane according to the arrangement of the antennas in a wireless manner.

1 is a diagram showing an apparatus for evaluating performance of an adaptive array antenna according to an embodiment of the present invention.
2 is a perspective view of the antenna hood.
FIG. 3 is a cross-sectional view showing an antenna with an antenna hood and an adaptive array antenna attached thereto.
Figure 4 shows the top and front views of the self-checking device.
5 shows a system in which the self-checking device is coupled to the antenna hood
6 is a diagram illustrating a performance evaluation method of an adaptive array antenna according to an embodiment of the present invention.
7 is a diagram showing a self-checking method of the performance evaluation apparatus according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

1 is a diagram showing an apparatus for evaluating performance of an adaptive array antenna according to an embodiment of the present invention. Referring to FIG. 1, the performance evaluation apparatus 100 may include a jamming simulator 110, a GNSS simulator 120, an antenna hood 130, and a self-checking apparatus 140.

The jamming simulator 110 generates a virtual signal including a radio wave disturbance signal.

The jamming simulator 110 may simulate various jamming signals required for testing the adaptive array antenna and send the signals through the output port 112. [

Alternatively, the jamming simulator 110 combines a jamming signal with a signal generated by the GNSS simulator 120 and transmits the jamming signal to the GNSS simulator 120. The jamming simulator 110 synthesizes a jamming signal with a signal received from a GNSS satellite using a GNSS antenna (not shown) . Jamming simulator 110 may include an input port 114 for receiving signals from GNSS simulator 120 and / or signals from a GNSS antenna.

Jamming signals generated by the jamming simulator 110 include continuous waves, additive white Gaussian noise (AWGN), amplitude modulation (AM), frequency modulation (FM), pulse modulation (PM) Multitone, C / A code spread spectrum, and P code spread spectrum. The jamming simulator 110 can control the type, intensity, and phase of a signal transmitted by the control software.

The jamming signal transmitted through the output port of the jamming simulator 110 is transmitted to the antenna hood 130. The antenna hood 130 wirelessly transmits the jamming signal based on the jamming signal received from the jamming simulator 110 It can send out.

FIG. 2 is a perspective view of the antenna hood 130, and FIG. 3 is a cross-sectional view showing the antenna H with the antenna hood 130 and the adaptive array antenna 200 attached thereto.

1 to 3, the antenna hood 130 is coupled to the antibody A so that the antenna hood 130 and the adaptive array antenna 200 face each other. At this time, the adaptive array antenna 200 includes a plurality of antenna elements 202.

The antenna hood 130 includes an input port 132 for receiving a jamming signal sent through the output port 112 of the jamming simulator 110.

The antenna hood 130 includes a plurality of lower antennas 134 and the jamming signal received by the input port 132 is wirelessly transmitted through the plurality of lower antennas 134. [ The number and arrangement of the lower antennas 134 are set to correspond to the number and arrangement of the antenna elements 202 of the adaptive array antenna 200. [ That is, each lower antenna 134 is positioned facing each antenna element 202.

That is, in order to confirm receipt of each of the antenna elements 202 of the adaptive array antenna 200, a plurality of sub antennas 134 of the antenna hood 130 are connected to the respective antennas 202 of the adaptive array antenna 200, Lt; RTI ID = 0.0 > 202 < / RTI > The lower antenna 134 of the antenna hood 130 is disposed at such a distance as to minimize the signal loss between the lower antenna 134 of the antenna hood 130 and the antenna element 202 of the adaptive array antenna 200 .

For example, in the case of the adaptive array antenna 200 of the five antenna elements 202, the first antenna element of the antenna hood 130 transmits a signal to be received by the first antenna element of the adaptive array antenna 200 Signals and signals received at antennas 2 to 5 are different. In this case, the signal received at the element # 1 of the adaptive array antenna 200 is less attenuated and the attenuation received at the antenna elements # 2 through # 5 is large, so that the signal can be isolated.

The arrangement of the lower antenna 134 of the antenna hood 130 is designed in consideration of signal transmission. When the adaptive array antenna 200 is inspected by the antenna hood 130 manufactured considering the distance and position at which the antenna hood 130 and the adaptive array antenna 200 can transmit and receive signals between the antenna elements 202, The signal transmission characteristics between the hood 130 and the adaptive array antenna 200 may exhibit a result similar to the mutual coupling characteristics of the adaptive array antenna 200 itself. This can be shown to wirelessly transmit signals to the adaptive array antenna 200 without distortion in the antenna hood 130. [

A Global Navigation Satellite System (GNSS) navigation device (not shown) receives a signal using the adaptive array antenna 200, analyzes the virtual jamming signal, and determines the phase and size of each reception antenna so that the power of the jamming signal is minimized. Adjust the weight to remove the jamming signal. Thus, for GNSS navigation devices that use adaptive array antenna technology, functionality and performance evaluation can be performed on the entire device including the antenna.

The antenna hood 130 may further include a belt device 136 or a mounting screw device 138 for connecting the belt so that it can be attached to the antibody A. [

On the other hand, the performance evaluation apparatus 100 may further include a self-checking apparatus 140. The self-check device 140 may be used to determine whether the jamming simulator 110 and the antenna hood 130 are operating normally. 4 shows a front view of the self-checking device 140, and Fig. 5 shows a system in which the self-checking device 140 is coupled with the antenna hood 130. Fig.

When the self-checking device 140 is used, the antenna hood 130 couples to the self-checking device 140 instead of the antibody on which the adaptive array antenna is mounted. The self-test apparatus 140 includes a receive antenna element 142 for receiving a radio signal from the lower antenna 134 at a position corresponding to a plurality of lower antennas 134 of the antenna hood 130.

In addition, the self-check device 140 includes a jamming input port 144 for receiving a virtual jamming signal generated by the jamming simulator 110. The jamming signal input to the jamming input port 144 may be the same as or equivalent to the jamming signal input to the input port 132 of the antenna hood 130.

The self-test device 140 may include a signal received at the receive antenna element 142 (i.e., a signal emitted from the antenna hood 130) and a signal transmitted through the input port 144 (i. E., The jamming simulator 110) And judges whether or not the jamming signal has normally been emitted through the antenna hood 130. In this case, The display unit 146 located on the front surface of the self-checking device 140 may indicate whether the signal emitted from the antenna hood 130 is normal or needs to be checked.

6 is a diagram illustrating a performance evaluation method of an adaptive array antenna according to an embodiment of the present invention.

The performance evaluation method of the adaptive array antenna shown in FIG. 6 can be performed in the performance evaluation apparatus including the jamming simulator and the antenna hood as described above.

Referring to FIG. 6, the jamming simulator 110 generates a virtual signal including a virtual jamming signal (S610). Alternatively, the jamming simulator 110 may receive the GNSS signal generated in the GNSS simulator, and may generate a virtual signal by synthesizing the jamming signal with the generated GNSS signal. Alternatively, the jamming simulator 110 may receive a GNSS signal from a satellite via a GNSS antenna, and may synthesize a jamming signal with the received GNSS signal to generate a virtual signal.

Next, a virtual signal including a jamming signal generated by the jamming simulator 110 is wirelessly transmitted through a plurality of lower antennas 134 of the antenna hood 130 (S620). At this time, the antenna hood 130 has a shape corresponding to the arrangement of the antenna elements of the adaptive array antenna 200. That is, each lower antenna 134 is disposed in such a manner as to face each antenna element 202.

Thereafter, the GNSS navigation apparatus including the adaptive array antenna system receives the virtual jamming signal and removes the jamming signal by adjusting the phase and size weights of the respective reception antennas so that the power of the jamming signal is minimized (S630). The jamming signal cancellation performance of the GNSS navigation apparatus can be evaluated based on the jamming signal cancellation result of the GNSS navigation apparatus.

7 is a diagram showing a self-checking method of the performance evaluation apparatus according to an embodiment of the present invention.

The performance evaluation method of the adaptive array antenna shown in FIG. 7 can be performed in the performance evaluation apparatus including the jamming simulator, the antenna hood, and the self-evaluation apparatus as described above.

Referring to FIG. 6, the jamming simulator 110 generates a virtual signal including a virtual jamming signal (S710). Alternatively, the jamming simulator 110 may receive the GNSS signal generated in the GNSS simulator, and may generate a virtual signal by synthesizing the jamming signal with the generated GNSS signal. Alternatively, the jamming simulator 110 may receive a GNSS signal from a satellite via a GNSS antenna, and may synthesize a jamming signal with the received GNSS signal to generate a virtual signal.

Next, a virtual signal including a jamming signal generated by the jamming simulator 110 is wirelessly transmitted through a plurality of lower antennas 134 of the antenna hood 130 (S720). At this time, the antenna hood 130 has a shape corresponding to the arrangement of the antenna elements of the adaptive array antenna 200. That is, each lower antenna 134 is disposed in such a manner as to face each antenna element 202.

The self-test device 140 receives a jamming signal from the jamming simulator 110 via the input port 144 (S730) and the self-test device 140 also receives the jamming signal via the receive antenna element 142 And receives a radio signal transmitted from the antenna hood 130 (S740). The self-test apparatus 140 compares the signal received from the jamming simulator 110 in step S630 with the signal received from the antenna hood 130 in step S640 to determine whether the jamming simulator 110 and the antenna hood 130 are normal It is determined whether it is operating (S750).

It is to be understood that the terms "comprises", "comprising", or "having" as used in the foregoing description mean that the constituent element can be implanted unless specifically stated to the contrary, But should be construed as further including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (10)

An apparatus for evaluating performance of an adaptive array antenna that receives a Global Navigation Satellite System (GNSS) signal and includes a plurality of antenna elements,
A jamming simulator for generating a virtual signal including a virtual propagation disturbance signal;
And an antenna hood which includes a plurality of sub antennas which are opposite to the adaptive array antenna and which transmit the virtual signal wirelessly,
Wherein the number of the plurality of sub-antennas is equal to the number of the plurality of antenna elements, and each of the sub-antennas is located facing each antenna element. delete The method according to claim 1,
Further comprising a GNSS simulator for generating a virtual GNSS signal,
Wherein the jamming simulator generates the virtual signal by synthesizing the virtual propagation disturbance signal with the generated GNSS signal. The method according to claim 1,
Further comprising a GNSS antenna for receiving a GNSS signal from a satellite,
Wherein the jamming simulator synthesizes the virtual propagation disturbance signal with the received GNSS signal to generate the virtual signal. The method according to claim 1,
Receiving the virtual signal from the jamming simulator and receiving a virtual signal wirelessly transmitted from the antenna hood and comparing the signal from the jamming simulator and the signal from the antenna hood to generate a jamming simulator, And a self-checking device for determining whether the antenna hood is operating normally. An adaptive array antenna comprising a jamming simulator and a plurality of antenna elements and an antenna hood located opposite the antenna hood, the adaptive array being implemented in an apparatus for evaluating the performance of an adaptive array antenna receiving a Global Navigation Satellite System (GNSS) A method for evaluating performance of an antenna,
Generating a hypothetical signal including a virtual propagation disturbance signal in the jamming simulator; And
And transmitting the virtual signal through a plurality of lower antennas of the antenna hood,
Wherein the number of the plurality of sub-antennas is equal to the number of the antenna elements, and each of the sub-antennas is located facing each antenna element. delete The method according to claim 6,
Further comprising generating a virtual GNSS signal,
Wherein the step of generating the virtual signal comprises generating the virtual signal by adding the virtual propagation disturbance signal to the generated GNSS signal. The method according to claim 6,
Further comprising receiving a GNSS signal from a satellite,
Wherein the step of generating the virtual signal includes generating the virtual signal by adding the virtual propagation disturbance signal to the received GNSS signal. The method according to claim 6,
The apparatus for evaluating performance of the adaptive array antenna further includes a self-checking device,
The self-test device receiving the virtual signal from the jamming simulator;
Receiving a virtual signal wirelessly transmitted from the antenna hood; And
Further comprising the self-test device comparing the signal from the jamming simulator and the signal from the antenna hood to determine whether the jamming simulator and the antenna hood are operating normally.
KR1020130137640A 2013-11-13 2013-11-13 Performance Testing Apparatus and Method for Addaptive Array Antenna KR101517562B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102241425B1 (en) * 2019-11-07 2021-04-16 엘아이지넥스원 주식회사 Simulation signal transmission/ reception system and control method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100135594A (en) * 2009-06-17 2010-12-27 국방과학연구소 Gain and bandwidth control apparatus and method on array antenna for anti-jamming in gps system
KR101030236B1 (en) * 2009-01-06 2011-04-22 국방과학연구소 Wavefront device for testing gps adapted antenna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101030236B1 (en) * 2009-01-06 2011-04-22 국방과학연구소 Wavefront device for testing gps adapted antenna
KR20100135594A (en) * 2009-06-17 2010-12-27 국방과학연구소 Gain and bandwidth control apparatus and method on array antenna for anti-jamming in gps system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102241425B1 (en) * 2019-11-07 2021-04-16 엘아이지넥스원 주식회사 Simulation signal transmission/ reception system and control method thereof

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