KR102103841B1 - Identification of friend or foe apparatus for next generation destroyer having phased array iff antenna and its down-tilt control unit with adjustable transmission line - Google Patents

Abstract

Disclosed is an identification-of-friend-or-foe system for a next-generation destroyer including a phase-array IFF antenna and a transmission-line-changeable high-angle control device. The identification-of-friend-or-foe system includes: a query device transmitting a query signal for identification-of-friend-or-foe to a target, and receiving a response signal from the target; a response device receiving the query signal from the target, and transmitting the response signal to the received query signals; an antenna part arranging a plurality of radiation elements in a cylindrical or polyprism-shaped form, transmitting the query signal of the query device by forming both a directional pattern and an omnidirectional pattern in accordance with electricity feeding to each of the radiation elements, receiving the response signal from the target, receiving the query signal from the target, and transmitting the response signal of the response device; and an electricity feeding part supplying electric power to each of the radiation elements, and applying different phases to each of the radiation elements by changing the length of a transmission line for high-angle control.

Description

IDENTIFICATION OF FRIEND OR FOE APPARATUS FOR NEXT GENERATION DESTROYER HAVING PHASED ARRAY IFF ANTENNA AND ITS DOWN-TILT CONTROL UNIT WITH ADJUSTABLE TRANSMISSION LINE}

The present invention relates to a PIA identification device for a next destroyer having a phased array IFF antenna and a variable elevation control device for a transmission line, and more specifically, a phased array that allows both an omnidirectional pattern and a directional pattern to be formed with one antenna. The present invention relates to a PIA identification device for a next destroyer having an IFF antenna and a transmission line variable elevation control device.

The PIA identification device plays a role of identifying whether the target is an allied or an enemy using an antenna that transmits and receives an electromagnetic wave signal.

That is, a question signal for determining whether a friend is friendly is transmitted to a moving target, and a response signal including code information suitable for the question signal is received, and a friend is identified.

For this PIA identification, the PIA identification device includes an interrogator 20 that transmits a question signal as shown in FIG. 1, and a transponder 30 that automatically transmits a response signal to the question signal. , It may include a processor 10 for receiving, processing and analyzing the response signal from the transponder 30.

The interrogator 20 transmits an interrogation signal through the directional antenna 40 which is directed to the target, receives a response signal from the target, and the transponder 30 transmits an interrogation signal from the target through the omni-directional antenna 50. Receive and send a response signal to the target.

Conventional PIA identification device for traps is used by separating the omni-directional antenna 50 for the transponder 30 and the directional antenna 40 of the mechanical rotation method for the interrogator 20, two antennas 40 , 50) is the same frequency, it is better to increase the separation distance of the antenna to improve isolation between antennas.

Therefore, there is a problem in that a space occupies a lot of space when an antenna is installed on a ship with many spatial constraints, and the structure of the mast for antenna installation is complicated, resulting in a high RCS (Radar Cross Section) and an increase in the detection rate by an enemy radar.

In addition, the directional antenna of the mechanical rotation method has difficulty in maintenance due to corrosion by seawater of the rotating part of the pedestal.

In addition, the directional antenna of the mechanical rotation type can rotate the beam of the antenna at an azimuth angle (0 ° to 360 °), but cannot steer the beam in a high angle direction.

This results in deterioration of the identification performance of aviation targets that do not fall within the vertical beam width of the antenna, and when the vertical beam width of the directional antenna is widened, the gain of the antenna is attenuated and coverage is reduced.

Korean Registered Patent Publication No. 10-1933978 (Publication date 2018.12.31.)

The present invention was devised to solve this problem, and by forming both omni-directional patterns and directional patterns with one antenna, a phased array IFF antenna and a transmission line variable elevation control device to maximize space efficiency of a ship. An object of the present invention is to provide a PIA identification device for a next destroyer.

Another object of the present invention is to arrange the radiating element of the antenna in a columnar or polygonal column shape, to reduce the RCS and to reduce the detectability by an enemy radar, a phased array IFF antenna and a transmission line equipped with a variable elevation control device. It is to provide a PIA identification device for a destroyer.

Another object of the present invention is to construct a vehicle having a phased array IFF antenna and a transmission line variable elevation control device to initially set the height of the IFF antenna according to the operating environment of the phased array IFF antenna by varying the length of the transmission line. In providing a PIA identification device.

The PIA identification device for the next destroyer having a phased array IFF antenna and a transmission line variable elevation control device according to an embodiment of the present invention for achieving the above object transmits an interrogation signal for PIA identification to a target, An interrogator that receives a response signal from; A transponder receiving a question signal from the target and transmitting a response signal to the received question signal; A plurality of radiating elements are arranged in a columnar or polygonal columnar shape, and both the omnidirectional pattern and the directional pattern are formed according to the feeding to each radiating element to transmit the interrogator's interrogation signal and receive a response signal from the target. An antenna unit for receiving a question signal from a target and transmitting a response signal of the answering machine; And a power supply unit supplying power to each of the radiating elements and varying the length of the transmission line for controlling the elevation to apply different phases to the radiating elements.

In one embodiment of the present invention, the power supply unit feeds an input signal to each of the radiating elements, and a first circuit board on which a first transmission line is printed and a second circuit board on which a second transmission line is printed are provided. A power divider overlapping to form a transmission line connecting the input port and the output port; It is preferable that the second circuit board on which the second transmission line is printed is linearly moved in the longitudinal direction to vary the length of the transmission line connecting the input port and the output port of the power distributor.

In one embodiment of the present invention, the first transmission line and the second transmission line are preferably formed to overlap a certain length or more when the first and second circuit boards overlap.

The PIA identification device for the next destroyer equipped with the phased array IFF antenna and the transmission line variable elevation control device of the present invention can maximize the space efficiency of the ship by forming both omni-directional patterns and directional patterns with one antenna. .

In addition, by arranging the antenna radiation elements in a columnar or polygonal columnar shape, it is possible to reduce the RCS and reduce the detection rate by an enemy radar.

In addition, it is possible to control the elevation of the IFF antenna simply by varying the transmission line length of the power distributor.

1 is a view schematically showing the configuration of a PIA identification device for a trap according to the prior art.
FIG. 2 is a view schematically showing the configuration of a PIA identification device for a next destroyer according to an embodiment of the present invention.
3 is a view showing an exemplary configuration of an antenna unit applied to the present invention.
4 is a view showing an omnidirectional pattern formed in accordance with the present invention by way of example.
5 is a view showing an exemplary arrangement structure of a radiation element arranged in a polygonal column shape according to the present invention.
6 is an exemplary view showing a directional sum (Sum) pattern formed according to the present invention.
7 is a view showing an directional difference (Difference) pattern formed in accordance with the present invention by way of example.
8 is a view schematically showing a configuration of a power supply unit applied to the present invention.
9 is a view showing an exemplary circuit board on which a transmission line applied to the present invention is printed.
10 to 12 are views exemplarily showing a variable transmission line length for elevation control according to the present invention.
13 is a view exemplarily showing a shape of a variable power distribution length of a transmission line applied to the present invention.

For a detailed description of the present invention, which will be described later, reference is made to the accompanying drawings that illustrate, by way of example, specific embodiments in which the invention may be practiced. These examples are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and properties described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it should be understood that the location or placement of individual components within each disclosed embodiment can be changed without departing from the spirit and scope of the invention. Therefore, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed. In the drawings, similar reference numerals refer to the same or similar functions across various aspects.

Hereinafter, a PIA identification device for a next destroyer having a phased array IFF antenna and a transmission line variable elevation control device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a view schematically showing the configuration of a PIA identification device for a next destroyer according to an embodiment of the present invention.

As illustrated in FIG. 2, the PIA identification device 100 for the next destroyer according to an embodiment of the present invention includes a processor 110, an interrogator 120, a transponder 130, an antenna unit 140, and a power supply unit ( (Not shown).

The processor 110 may process signals transmitted and received by the interrogator 120 and the transponder 130, and analyze the response signal of the target to determine whether the target is a friendly or an enemy.

The interrogator 120 may transmit a question signal for PIA identification to the target, and receive a response signal (target response signal) from the target.

The responder 130 may receive a question signal (a target question signal) from the target, and transmit a response signal for PIA identification generated by the processor 110 to the target.

The antenna unit 140 forms an omnidirectional pattern and a directional pattern with one antenna to transmit the interrogation signal of the interrogator 120, receives a response signal from the target, receives an interrogation signal from the target, The response signal of the transponder 130 can be transmitted.

The antenna unit 140 may include a reflector 141 and a plurality of radiating elements 143 as shown in FIG. 3.

The reflector 141 is formed in a columnar or polygonal columnar shape and reflects radio waves forward.

The plurality of radiation elements 143 are arranged in the vertical (longitudinal) and horizontal (horizontal) directions at regular intervals on the front surface of the reflector 141 to radiate radio waves.

Meanwhile, a power supply unit (not shown) supplies power to each radiation element 143.

When the power supply unit (not shown) supplies power to all the radiation elements 143 arranged in the vertical and horizontal directions at regular intervals on the front surface of the reflector 141 formed in the form of a cylinder or a polygonal column, illustrated in FIG. 4 As described above, an omnidirectional pattern is formed, and a signal can be transmitted / received in an azimuth 0 ° to 360 ° omnidirectional.

In addition, a radiating element 143 corresponding to an azimuth angle among the radiating elements 143 arranged in the vertical and horizontal directions at regular intervals on the front surface of the reflector 141 in which the power supply unit (not shown) is formed in a cylindrical or polygonal column shape. ), If power is supplied only, a directional pattern may be formed.

For example, when it is assumed that the radiation elements 143 are arranged in a 4 × 32 phase in the vertical and horizontal directions on the front surface of the reflector 141 formed in a polygonal column shape, the radiation elements 143 are as shown in FIG. 5. It is composed of 32 columns, and the power is supplied to the first to eighth columns, and if an arbitrary vector value is added, a directional sum pattern and a directional difference pattern can be formed as shown in FIGS. 6 and 7. .

As described above, power is supplied to columns 1 to 8, an arbitrary vector value is added, and then power is supplied to columns 2 to 9, columns 3 to 10, and columns 4 to 11 in sequence. When a vector value is added, beam steering is possible in all directions from 0 ° to 360 °.

When the directional pattern is formed in this way, it is possible to electrically perform beam steering in all directions from 0 ° to 360 °, so there is no need to provide a rotating part of the pedestal, thereby simplifying maintenance. do.

The power supply unit (not shown) may form an omnidirectional pattern or form a directional pattern by supplying power to each radiating element 143 under the control of a power supply control unit (not shown).

In addition, the power feeding unit (not shown) controls the elevation by applying different phases to the respective radiating elements 143 arranged in the vertical and horizontal directions at regular intervals on the front surface of the reflector 141 formed in the form of a cylinder or polygonal column. can do.

The power feeding unit (not shown) can control the elevation by applying a phase change to all the radiation elements 143 in the vertical and horizontal arrangements, but the system price rises exponentially, so in the embodiment of the present invention, the vertical arrangement Different phases are applied to the radiated element 143 to control the elevation.

8 is a view schematically showing a configuration of a power supply unit applied to the present invention.

The power supply unit 150 may include a power divider 151 and a driver 157 as shown in FIG. 8.

The power divider 151 can feed the input signal to the vertically arranged radiating element 143.

9, the power distributor 151 may be formed of a circuit board on which the first transmission line 153 is printed and a circuit board on which the second transmission line 155 is printed, as shown in FIG. 9. As described above, the power distributors 151 may be formed by overlapping two circuit boards.

As shown in FIG. 10, when the two circuit boards overlap, the first transmission line 153 and the second transmission line 155 connect one to connect the input port and the output port of the power distributor 151.

The first transmission line 153 and the second transmission line 155 printed on each circuit board are preferably formed to overlap two lines over a predetermined length when the two circuit boards overlap.

As described above, any one of the first transmission line 153 and the second transmission line 155 overlapping and forming one transmission line, preferably, the second transmission line 155 linearly moves the position in the longitudinal direction. The signal phase from the power distributor 151 may be changed according to the position movement.

The driving unit 157 linearly moves any one of the first transmission line 153 and the second transmission line 155, preferably the second transmission line 155, in the longitudinal direction based on the elevation control signal received from the operator. I can do it.

The driving unit 157 moves the circuit board on which the second transmission line 155 is printed to move the position of the second transmission line 155.

The driving unit 157 may linearly move the second transmission line 155 in the right direction as illustrated in FIG. 11, and linearly move in the left direction as illustrated in FIG. 12.

The phase applied to the radiating elements 143 arranged vertically through the first transmission line 153 and the second transmission line 155 that overlap and form one transmission line may be defined by Equation (1).

는 유전체의 유전율이다. 여기서 전송선로의 길이 l이 길어질수록 전송선로를 통해 종 배열된 복사소자(143)로 인가되는 위상은 상대적으로 늦어지게 된다.In Equation 1, k is the propagation constant, l is the length of the transmission line,

Is the dielectric constant of the dielectric. Here, as the length l of the transmission line increases, the phase applied to the radiation elements 143 arranged vertically through the transmission line becomes relatively slow.

As described above, the phase applied to the radiation elements 143 vertically arranged through the transmission line may be changed by the length l of the transmission line.

As shown in FIG. 10, when the second transmission line 155 does not move to one side and is located at the same distance from the input port, the length of the transmission line connected to each output port becomes the same, respectively. The phase applied to the output port of is the same.

However, as shown in FIG. 11, when the second transmission line 155 is moved to the right, the transmission line connecting between the input port and the output port on the right is more than the transmission line connecting between the input port and the output port on the left. Due to the length difference, the phase of the right output port of the power divider 151 is delayed relative to the phase of the left output port due to the difference in length between the two transmission lines.

Also, as shown in FIG. 12, when the second transmission line 155 is moved to the left, the transmission line connecting the input port and the output port on the right side is more than the transmission line connecting the input port and the output port on the left side. It is shortened, and the phase of the right output port of the power divider 151 is relatively faster than the phase of the left output port due to the difference in length between the two transmission lines.

Meanwhile, in an embodiment of the present invention, the length of the transmission line connecting the input port and the output port of the power distributor 151 is varied by linearly moving the second transmission line 155, as shown in FIG. 13. The second transmission line 155 may be rotationally moved to implement a variable length of the transmission line.

As described above, the present invention can vary the length of the transmission line so that a desired phase is applied to each radiation element 143.

Here, the elevation control is not required periodically or at all times, but is necessary for initial setting according to the operating environment, and the operator can set the antenna elevation according to the operating environment of the antenna at the beginning of operation.

Although described above with reference to embodiments, those skilled in the art understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. Will be able to.

110. handler, 120. interrogator,
130. Answering machine, 140. Antenna part,
141. Reflector, 143. Radiation element,
150. Power supply unit, 151. Power distributor,
153. First transmission line, 155. Second transmission line,
157. Drive

Claims (3)

An interrogator that transmits an interrogation signal for identification to the target and receives a response signal from the target;
A transponder receiving a question signal from the target and transmitting a response signal to the received question signal;
And a single circular antenna including a plurality of reflectors arranged in a circle and a plurality of radiating elements arranged in rows in the horizontal and vertical directions on the reflectors, and when fed to all of the plurality of radiators, the When an omnidirectional pattern of a single circular antenna is formed, a plurality of radiating elements included in a quarter of 360 degrees of azimuth of the single circular antenna among the plurality of radiating elements is fed and an arbitrary vector value is applied, Forming one of the directional sum pattern and the directional difference pattern of the single circular antenna, and transmitting the interrogation signal of the interrogator using the omnidirectional pattern and the directional sum pattern and the directional difference pattern, and a response signal from a target An antenna unit for receiving, receiving a question signal from a target, and transmitting a response signal of the transponder; And
And a plurality of power dividers for supplying power to a plurality of radiating elements arranged in a vertical direction among the plurality of radiating elements, each of the power dividers having a first circuit board printed with a first transmission line and the first 1 The second transmission line overlapping a certain area of the transmission line is composed of a printed second circuit board, and the second transmission line is moved between the plurality of copy elements arranged in the vertical direction by moving in the longitudinal direction. It includes a phase, IFF phase feeder for applying a phase, feeding the whole of the plurality of radiating elements, and feeding a plurality of radiating elements included in a quarter of the azimuth 360 degrees of the single circular antenna Pia identification device for the next destroyer equipped with an antenna and transmission line variable elevation control device. delete delete

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