KR101544832B1 - Apparatus and method for shielding jamming signal - Google Patents

Apparatus and method for shielding jamming signal Download PDF

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Publication number
KR101544832B1
KR101544832B1 KR1020110072118A KR20110072118A KR101544832B1 KR 101544832 B1 KR101544832 B1 KR 101544832B1 KR 1020110072118 A KR1020110072118 A KR 1020110072118A KR 20110072118 A KR20110072118 A KR 20110072118A KR 101544832 B1 KR101544832 B1 KR 101544832B1
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KR
South Korea
Prior art keywords
disturbance signal
shielding
antenna
disturbance
antenna lid
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Application number
KR1020110072118A
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Korean (ko)
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KR20120121335A (en
Inventor
이상욱
손승호
안도섭
이호진
이경우
Original Assignee
한국전자통신연구원
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Priority to KR1020110072118A priority Critical patent/KR101544832B1/en
Priority to GB1207300.3A priority patent/GB2490416A/en
Publication of KR20120121335A publication Critical patent/KR20120121335A/en
Application granted granted Critical
Publication of KR101544832B1 publication Critical patent/KR101544832B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H01Q1/425—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising a metallic grid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
    • H01Q15/0053—Selective devices used as spatial filter or angular sidelobe filter

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Aerials (AREA)

Abstract

The present invention proposes a satellite navigation signal disturbance shielding apparatus and method for shielding incidence of a GPS disturbance signal and receiving necessary GPS signals. The present invention utilizes that GPS satellites or navigation satellites do not come in at a predetermined radius around the polarity due to their orbital inclination angles so that reception of GPS signals is normally received while disturbance signals from the north can be shielded. According to the present invention, it is possible to cope with a disturbance on the side by rotating in the direction in which the disturbance signal is removed if necessary.

Description

[0001] Apparatus and method for shielding jamming signal [

The present invention relates to an apparatus and method for shielding disturbing signals. More particularly, the present invention relates to an apparatus and method for shielding a disturbance signal to disturb a satellite navigation signal.

GPS (Global Positioning System), which is represented by GPS, is operated by US GPS and GLONASS of Russia. However, there have been various discussions about anti-jamming of GPS due to occasions where GPS signals are not properly received due to a jamming signal.

There is an antenna signal processing system for GPS anti-jamming. The input signal input to the antenna may be repeatedly increased or decreased by the jamming signal. The signal processing system of the antenna takes this point into consideration so that the input signal is not distorted by removing it whenever the input signal is changed by the jamming signal. The signal processing system of the antenna can effectively perform the jamming response signal processing through this function. However, since the signal processing system of the antenna involves a signal processing process for the jamming response, the configuration is complicated and the installation cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a GPS jamming system, And a disturbance signal shielding portion having an electromagnetic wave shielding function is formed on the surface of the antenna lid portion covering the antenna so that the disturbance signal shielding portion can be formed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an object to provide a wireless communication device, comprising: an antenna lid covering an antenna for receiving a target signal; And a disturbance signal shielding unit which is formed on at least one surface of the antenna lid and shields a disturbance signal to disturb the target signal.

Preferably, the disturbance signal shield is formed on the surface area of the antenna lid portion to the extent that it shields all disturbing signals entering in at least one direction. More preferably, the disturbance signal shielding portion is formed on at least one side selected from the left and right sides of the antenna lid portion and the four sides of the antenna lid portion in accordance with the entry direction of the disturbance signal when the disturbance signal enters in one direction. More preferably, only the disturbance signal shielding portion formed on one side of the antenna lid portion is rotatably formed.

Preferably, the disturbance signal shielding part is formed by painting a paint of an electromagnetic wave shielding function on one surface of the antenna lid part, or an electromagnetic wave shielding material is attached to one surface of the antenna lid part.

Preferably, the disturbance signal shielding portion is formed on a surface area of the antenna lid portion within a predetermined angle from one side of the antenna lid portion oriented toward the azimuth value with reference to the azimuthal value to which the disturbance signal is input. More preferably, the disturbance signal shielding device further includes a direction indicator for indicating the direction, and the disturbance signal shielding portion is rotatable based on the acquired orientation value displayed through the orientation indicator every time the orientation value is acquired .

Preferably, the perturbation signal shielding portion is formed on the inner surface of the antenna lid portion.

Preferably, the disturbance signal shield is detachably attached to the antenna lid.

In addition, the present invention provides a method of detecting a disturbance signal, comprising: detecting a disturbance signal influencing input to detect whether a disturbance signal is inputted to disturb a target signal at predetermined time intervals; Rotating the antenna lid part with the disturbance signal shielding part for shielding the disturbance signal until the receive sensitivity of the disturbance signal is less than the reference sensitivity; And adjusting the position of the antenna lid part so that the disturbance signal shield part is oriented in the north direction if the inflow is not detected.

According to the present invention, the following effects can be obtained. First, by forming a disturbance signal shielding part having an electromagnetic wave shielding function on the surface of the antenna lid part covering the antenna as a measure for coping with GPS jamming, it is possible to effectively shield all the GPS disturbance signals inputted at a certain angle. Second, the configuration of the apparatus is simple, which makes it easy to manufacture the apparatus, and can reduce the cost of manufacturing the apparatus.

1 is a conceptual diagram of a disturbance signal shielding apparatus according to a preferred embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a perturbation signal shielding unit included in the perturbation signal shielding apparatus of FIG. 1;
3 is a three-dimensional reference view of the disturbance signal shield shown in FIG.
4 is a reference diagram for explaining the principle of the structure of the disturbance signal shielding apparatus shown in FIG.
5 is a photographic view of an actually produced disturbance signal shielding apparatus.
6 is a flowchart illustrating a disturbance signal shielding method according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the 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 addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

1 is a conceptual diagram of a disturbance signal shielding apparatus according to a preferred embodiment of the present invention. 1 shows a disturbance signal shielding device viewed from the side. 1, the disturbance signal shielding apparatus 100 includes an antenna lid portion 120 and a disturbance signal shielding portion 110. As shown in FIG.

The disturbance signal shielding apparatus 100 refers to a device for effectively coping with radio wave disturbance which makes it difficult to process a satellite navigation signal. The disturbance signal shielding apparatus 100 has a purpose of shielding only a GPS disturbance signal incident at a predetermined angle to receive a necessary GPS signal.

The antenna lid 120 functions to cover the antenna 30 receiving the target signal 10 by the satellite 11. [ The antenna lid 120 may be implemented as a transparent body in the form of a radome or hemisphere.

The disturbance signal shielding part 110 is formed on at least one surface of the antenna cover part 120 and functions to shield the disturbance signal 20 to disturb the object signal 10. [ The disturbance signal shielding part 110 may be constituted of an electromagnetic wave shielding material for the purpose of shielding the disturbance signal.

The electromagnetic shielding material functions to reflect or absorb the disturbing signal, and can be manufactured by imparting electromagnetic wave shielding function to the fiber. The electromagnetic shielding material to be applied to the present embodiment is a method of coating a shielding material or a conductive material on a fiber itself, a method of mixing a shielding material with a spinning stock solution of a synthetic fiber, a metal coating And a method of forming a metal oxide layer on the substrate. As the metal film forming method, metal deposition, electroless plating, and sputtering deposition are also possible.

Electromagnetic shielding materials should be electrically conductive and have a high surface area. Therefore, it is preferable that the filler for electromagnetic shielding has a high electrical conductivity and a large specific surface area. The reason for the high specific surface area is due to the skin effect, which is a phenomenon in which radio waves of high frequency interact only on the surface of the conductor. Thus, a composite material containing a finely-divided conductive filler in a polymer matrix is suitable for electromagnetic shielding and the fineness of the filler creates a surface area of the conductor much larger than the assembled conductor.

Meanwhile, in the case of this embodiment, the disturbance signal shielding unit 110 may be formed by painting a paint having an electromagnetic wave shielding function on the surface of the antenna lid unit 120. In the present embodiment, the disturbance signal shielding part 110 is formed by painting the electromagnetic wave shielding function paint on one surface of the antenna lid part 120, or the electromagnetic wave shielding part may be formed on the antenna lid part 120 And the like.

The disturbance signal shielding part 110 may be formed on the surface area of the antenna cover part 120 to the extent that the disturbance signal 20 entering at least in one direction is shielded. Preferably, the disturbance signal shielding part 110 is disposed on the four sides (east, west, south, and north) of the antenna lid part 120 in accordance with the entry direction of the disturbance signal 20 when the disturbance signal 20 enters in one direction (Side) or one side (side) which is selected from the left and right sides selected from among the left side and the right side. One end of the antenna lid 120, which is substantially perpendicular to the direction of the disturbance signal entering when the disturbance signal enters in one direction, is positioned at the center of the disturbance signal shield 110, and a wave angle is set at at least one side of the left and right sides The disturbance signal shielding part 110 is formed on the antenna lid part 120 so that a signal of 20 degrees or less is not inputted. An example of the disturbance signal shielding unit 110 is shown in FIG. FIG. 2 is a perspective view of a perturbation signal shielding apparatus according to an embodiment of the present invention. FIG. 2 is a plan view of a perturbation signal shielding apparatus according to an embodiment of the present invention. Assuming that the disturbance signal shield 110 is intended to only shield the disturbance signal received from one direction, e.g., the disturbance signal received from the north direction, the disturbance signal shield 110 may be formed as shown in FIG. 2 have. At this time, the disturbance signal shielding portion 110 is formed at 1/5 to 2/3 of the total surface area of the antenna lid portion 120. 3 is a three-dimensional reference view of the disturbance signal shield shown in FIG.

The disturbance signal shielding unit 110 shields the surface area of the antenna lid unit 120 within a predetermined angle up and down from one side of the antenna lid unit 120 that directs the azimuth signal 20 toward the azimuth signal 20, As shown in FIG.

The disturbance signal shielding unit 110 detects the disturbance signal from the reference side of the antenna lid unit 120 that directs the disturbance signal toward the corresponding orientation so that all the disturbance signals entering from the corresponding direction can be shielded based on the orientation value (0 deg. &Amp;thetas; ≤ 60 deg.) From the surface 130 of the antenna lid portion 120. [ More preferably, the perturbation signal shield 110 may be formed in the surface area of the antenna lid 120 within 20 degrees to 40 degrees. In this embodiment, the reference side means the horizon line.

The disturbance signal shielding apparatus 100 may further include a direction indicator (not shown). The bearing display unit displays the bearing such as east, west, south, north. Such a bearing display part can be embodied as a compass, for example. At this time, the perturbation signal shielding unit 110 may be rotatably formed based on the acquisition orientation value displayed through the orientation display unit each time the orientation value is acquired. Since the disturbance signal 20 can come from various directions depending on the situation, the disturbance signal shield 110 is preferably rotatable to correspond to the disturbance signal 20. In this embodiment, the disturbance signal shielding part 110 may be rotatably formed on or below the antenna lid part 120.

On the other hand, the disturbance signal shielding part 110 may be formed to be rotatable in the vertical direction or the left and right direction on one surface of the antenna lid part 120.

The disturbance signal shielding part 110 is preferably formed on the inner surface of the antenna lid part 120. In this embodiment, the antenna lid 120 may be implemented as a radome for a satellite antenna. The radome is intended to protect the antenna from the external environment such as climate, pressure, etc. It should be an electric insulator, free of joints, and strong enough to withstand air friction, bird or hail. Therefore, it is common for radome to be implemented as a nylon-based plastic dome. In some cases, a metal foil is attached to the outer surface to enhance the insulator characteristics as a means for avoiding static charge. The disturbance signal shielding unit 110 is formed on the inner surface of the antenna lid unit 120 in order to take account of the characteristics of the antenna lid 120, that is, the radome and prevent it from being easily damaged by the external environment. Of course, it is also possible to form the disturbance signal shielding part 110 on the outer surface of the antenna lid part 120. Meanwhile, various methods such as adhesion, attachment, integral type, and insertion can be used as the forming method.

The disturbance signal shielding part 110 may be detachably attached to the antenna lid part 120. Radome is also embodied by covering a plastic frame with a cloth based on nylon or rubber. The disturbance signal shielding portion 110 can be detachably mounted on or under the ceiling, thereby achieving the above object.

Meanwhile, the plurality of disturbance signal shielding portions 110 may be formed on the antenna cover 120 while being separated from each other. In this embodiment, only the disturbance signal shielding part 110 formed on at least one side of the antenna lid part 120 may be rotatable in consideration of this point.

The disturbance signal shielding apparatus 100 described above is a phenomenon 400 (see FIG. 4) in which the GPS satellite does not enter a predetermined radius (about 40 degrees) around the polarity due to its orbit inclination angle in the case of GPS and navigation satellites ) Is a proposed device that can receive disturbance signals from the north while receiving GPS signals normally. 4 is a reference diagram for explaining the principle of the structure of the disturbance signal shielding apparatus shown in FIG.

FIG. 5 is a photograph of a disturbance signal shielding device actually manufactured. The present invention relates to a disturbance signal shielding apparatus 100 for effectively shielding a GPS disturbance signal radiated mainly from the north. However, if necessary, the device may be oriented in the direction of the disturbance propagation even if the direction of the disturbance signal received is not the north direction.

The disturbance signal shielding apparatus 100 is formed by attaching a plate having an electromagnetic wave shielding material (coating material) or an electromagnetic wave shielding function to an existing GPS receiving antenna in a hemispherical transparent body or a radome at an arctic altitude position. That is, a circular electromagnetic wave shielding material (paint) or a plate of an angular distance of 40 degrees is attached based on the position of the polarity altitude. This disturbance signal shielding apparatus 100 is covered by a GPS reception antenna. However, if the disturbance signal deviates by more than 40 degrees from the non-northern direction, it can be rotated in the azimuth direction from the north direction .

The disturbance signal shielding apparatus 100 is for effectively shielding the jamming signal at low cost by effectively shielding the jamming signal by using the trajectory characteristic of the GPS satellite without signal processing. In addition, the disturbance signal shielding apparatus 100 is a built-in shielding agent for the disturbance signal radiated from the north, and most of the responses are possible. If necessary, the disturbance signal shielding apparatus 100 can rotate the disturbance signal to disturb the side. In addition, the disturbance signal shielding apparatus 100 is relatively simple to manufacture and easy to maintain and manage, and can cope effectively with the array antenna at low cost and the like. The disturbance signal shielding apparatus 100 is applicable to multiple navigation frequency monitoring.

Next, a method of shielding the disturbance signal using the disturbance signal shielding system including the disturbance signal shielding apparatus 100 will be described. 6 is a flowchart illustrating a disturbance signal shielding method according to a preferred embodiment of the present invention. The following description refers to Fig.

First, it is sensed whether a disturbance signal for disturbing the target signal is inputted at predetermined time intervals (disturbance signal influx detection step, S600). When an incoming disturbance signal is detected, the antenna lid portion with the disturbance signal shielding portion for shielding the disturbance signal is rotated (step S610). At this time, the rotation is performed until the receive sensitivity of the disturbance signal is lower than the reference sensitivity. If the reception sensitivity of the disturbance signal is less than the standard sensitivity, the antenna lid is no longer rotated (S630), and if the reception sensitivity of the disturbance signal exceeds the reference sensitivity, the antenna lid continues to rotate.

On the other hand, if no disturbance signal is detected, the position of the antenna lid portion is adjusted so that the disturbance signal shield portion faces the north direction (the antenna lid position adjustment step, S640).

On the other hand, the disturbance signal shielding method can also be performed as follows. First, the direction of the disturbance signal to disturb the target signal is detected at predetermined time intervals (disturbance signal direction detection step). In the present embodiment, this function can be performed by the signal direction detector. After the disturbing signal direction detecting step, it is determined whether or not the disturbing signal shielding portion shielding the disturbing signal is rotatably formed on at least one surface of the antenna lid portion covering the antenna for receiving the target signal ). When the discrimination result is rotatable, the position of the disturbance signal shield in the antenna lid portion is adjusted according to the detected disturbance signal direction. On the other hand, when the discrimination result is impossible to rotate, the position of the antenna lid part is adjusted in consideration of the formation position of the disturbance signal shielding part (shielding position adjustment step).

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . 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.

The present invention can be applied to a field for shielding a disturbance signal to disturb a satellite navigation signal, for example, a GPS satellite signal. For example, the present invention can be applied to a radome for a satellite antenna.

10: object signal 11: satellite
20: disturbance signal 30: antenna
100: disturbance signal shielding device 110: disturbance signal shielding part
120: Antenna cover

Claims (10)

An antenna lid covering an antenna for receiving a target signal; And
And a disturbance signal shielding part which is formed on at least one surface of the antenna lid part and which shields the disturbance signal to disturb the target signal,
Wherein the disturbance signal shielding device comprises: The method according to claim 1,
Wherein the disturbance signal shielding portion is formed on a surface area of the antenna lid portion and is formed on one side selected from the left and right sides of the antenna lid portion or on at least one side selected from the four sides of the antenna lid portion in accordance with the entry direction of the disturbance signal when the disturbance signal enters in one direction Wherein the disturbance signal shielding device is formed on the first surface. delete The method according to claim 1,
Wherein the disturbance signal shielding part is formed by painting a paint of an electromagnetic wave shielding function on one surface of the antenna lid part or an electromagnetic shielding agent is attached to one surface of the antenna lid part. The method according to claim 1,
Wherein the disturbance signal shielding portion is formed on the surface area of the antenna lid portion within a predetermined angle from one side of the antenna lid portion oriented toward the azimuthal value with reference to a bearing value to which the disturbance signal is inputted. 6. The method of claim 5,
A bearing indicator
Further comprising:
Wherein the disturbance signal shielding portion is rotatably formed based on an acquisition orientation value displayed through the orientation display portion each time the orientation value is acquired. 3. The method of claim 2,
Wherein only the disturbance signal shielding part formed on one side of the antenna lid part is rotatable. The method according to claim 1,
Wherein the disturbance signal shielding part is formed on the inner surface of the antenna lid part. The method according to claim 1,
Wherein the disturbance signal shielding part is detachably attached to the antenna lid part. A disturbance signal input sensing step of sensing whether a disturbance signal intended to disturb a target signal is input at predetermined time intervals;
Rotating the antenna lid part with the disturbance signal shielding part for shielding the disturbance signal until the receive sensitivity of the disturbance signal is less than the reference sensitivity; And
And adjusting the position of the antenna lid part so that the disturbance signal shielding part is directed toward the north direction when the inflow is not detected,
Wherein the disturbance signal shielding method comprises:
KR1020110072118A 2011-04-26 2011-07-20 Apparatus and method for shielding jamming signal KR101544832B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020110072118A KR101544832B1 (en) 2011-04-26 2011-07-20 Apparatus and method for shielding jamming signal
GB1207300.3A GB2490416A (en) 2011-04-26 2012-04-26 GPS antenna with jamming signal shielding

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020110038709 2011-04-26
KR20110038709 2011-04-26
KR1020110072118A KR101544832B1 (en) 2011-04-26 2011-07-20 Apparatus and method for shielding jamming signal

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KR101544832B1 true KR101544832B1 (en) 2015-08-17

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EP2924804A1 (en) * 2014-03-28 2015-09-30 Alcatel- Lucent Shanghai Bell Co., Ltd Radome with absorbent device, and antenna comprising same
US20180123225A1 (en) * 2015-09-25 2018-05-03 Qualcomm Incorporated Integrated airborne blade antenna design
US20170194704A1 (en) * 2016-01-05 2017-07-06 John Mezzalingua Associates, LLC Antenna having a beam interrupter for increased throughput
KR102016533B1 (en) * 2018-07-24 2019-09-02 주식회사 티에이엔지니어링 Jamming system
KR102082569B1 (en) * 2018-07-24 2020-02-28 주식회사 티에이엔지니어링 Jamming signal generator
KR101950482B1 (en) * 2018-10-02 2019-02-20 엘아이지넥스원 주식회사 System for controlling radar considering radio wave propagation environment and method thereof
CN109991629B (en) * 2019-04-30 2023-05-19 深圳市众异科技有限公司 Tuner down converter shielding case detection equipment
CN114867051B (en) * 2022-05-07 2023-11-03 南京码锐为电子科技有限公司 Anti-interference control system for wireless communication

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KR20120121335A (en) 2012-11-05
GB2490416A (en) 2012-10-31

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