JP6168950B2 - Radio wave induction device, flying object and flying object system - Google Patents

Description

  Embodiments described herein relate generally to a radio wave induction device, a flying object, and a flying object system.

  There is known a flying object system that obtains information such as the position and speed of a target using an observation device such as a radar, predicts a meeting using a control device, and launches the flying object to reach the target. The flying object has a guidance device, and after launching, the flying object itself obtains target information by the guidance device and meets the target.

  Active induction devices, semi-active induction devices, and passive induction devices are known as radio wave induction devices that are radio wave induction devices. In the active guidance device, the guidance device itself transmits and receives radio waves and performs signal processing. The semi-active guidance device receives the transmission wave of the radar mounted on the ground, vehicles, ships, aircraft, etc. as a reference signal, and also receives the reflected wave reflected from the target when the transmission wave hits the target and performs signal processing. Do. In the passive guidance device, a transmission wave of a radar mounted on the ground, a vehicle, a ship, an aircraft, or the like hits a target, and receives only the reflected wave reflected from the target to perform signal processing (see, for example, Patent Document 1).

JP 2012-233824 A

  When the radio wave guidance device of the flying object system is a passive guidance type, the intensity of the reflected wave reflected by the target is small when the distance between the radar and the target is large. In recent years, stealth technology that suppresses reflection of radio waves tends to be applied to targets. Therefore, the intensity of the reflected wave reflected by the target is reduced. For this reason, it is necessary to increase the reception sensitivity of the radio wave induction device.

  In addition, when the distance between the radar and the target is far away and the flying object cannot be guided close to the target due to restrictions on the observation accuracy of the radar, the radio wave guidance device generates a reflected wave reflected by the target with a wide field of view. It is necessary to receive.

  The problem to be solved by the present invention is to provide a radio wave guidance device, a flying object, and a flying object system that can receive reflected waves with a wider field of view while further improving reception sensitivity.

  The radio wave induction device of the embodiment is a passive induction radio wave induction device. The antenna forms a reception multi-beam and receives radio waves. The signal processor generates a steering signal for the flying body to fly toward the target based on the radio wave received by the antenna.

It is the schematic which showed the whole structure of the flying body system of embodiment. It is the block diagram which showed the structure of the flying body of embodiment. It is the block diagram which showed the structure of the electromagnetic wave guidance apparatus of embodiment. It is the schematic which showed the structure of the antenna of embodiment. It is the schematic which showed the reception multi-beam which the electromagnetic wave guidance apparatus of embodiment forms.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Drawing 1 is a schematic diagram showing the whole flight object system composition of an embodiment. In the illustrated example, the flying object system 1 includes a flying object 10, a radar 20, a control device 30, and a launcher 40. The flying object system 1 of the present embodiment uses a passive guidance device.

  The flying object 10 is a device that is launched by the launcher 40 and meets the target 50. The radar 20 irradiates the target 50 with a transmission wave, observes the target 50, and acquires target observation information. For example, the target observation information is information necessary for associating the flying object 10 with the target 50.

  Based on the target observation information acquired by the radar 20, the control device 30 calculates the launch direction, launch timing, and the like of the flying object 10 so that the flying object 10 meets the target 50. And instruct the launcher 10 to fire. The launcher 40 launches the flying object 10 based on the launch instruction from the control device 30.

  Next, the configuration of the flying object 10 will be described. FIG. 2 is a block diagram illustrating a configuration of the flying object 10 according to the embodiment. In the illustrated example, the flying body 10 includes a radio wave induction device 11, a propulsion device 12, and a steering device 13. The radio wave guidance device 11 detects the target 50 and generates a steering signal for the flying object 10 to fly toward the target 50. The propulsion device 12 generates thrust and causes the flying body 10 to fly. The steering device 13 changes the flying direction of the flying object 10 based on the steering signal of the radio wave guiding device 11. With this configuration, the flying object 10 can meet the target 50.

  Next, the configuration of the radio wave induction device 11 will be described. FIG. 3 is a block diagram illustrating a configuration of the radio wave guidance device 11 according to the embodiment. The radio wave guidance device 11 of this embodiment is a passive guidance device. In the illustrated example, the radio wave induction device 11 includes an antenna 111, a reference signal generator 112, a receiver 113, and a signal processor 114. The antenna 111 receives radio waves. The reference signal generator 112 generates a reference signal and outputs the generated reference signal to the receiver 113.

  In the receiver 113, the radar 20 irradiates the target 50 and the reflected wave reflected by the target 50 is received via the antenna 111. For example, a radar transmission wave transmits low frequency information on a high frequency carrier wave. The receiver 113 receives this and uses the reference signal when extracting information (signal). The signal processor 114 detects the target 50 based on the radio wave received by the receiver 113, and generates a steering signal for the flying object 10 to fly toward the target 50. For example, a conventionally known method is used as a method for generating a steering signal.

  In the present embodiment, in order for the radio wave guidance device 11 to more reliably receive the reflected wave reflected by the target 50 from the radar 20 and reflected by the target 50, the antenna 111 included in the radio wave guidance device 11 is phased array. (Phased Array) antenna. Since the phased array antenna can electronically control the direction of the reception beam (reception range) and form a reception multi-beam, the space can be scanned at a higher speed.

  FIG. 4 is a schematic diagram illustrating the configuration of the antenna 111 according to the embodiment. In the illustrated example, the antenna 111 includes a plurality of antenna elements 1111, the same number of A / D converters 1112 as the antenna elements 1111, and a plurality of combiners 1113.

  The antenna element 1111 receives radio waves and converts them into analog signals. The A / D converter 1112 converts an analog signal into a digital signal and outputs it. The synthesizer 1113 synthesizes and outputs the digital signals output from the A / D converters 1112. The synthesizer 1113 multiplies the digital signal output from each A / D converter 1112 by a variable coefficient when synthesizing the digital signal output from each A / D converter 1112. By changing this variable coefficient, the direction of the received beam can be changed. In addition, by providing a plurality of combiners 1113 and setting variable coefficients so that the directions of the received beams of the combiners 1113 are shifted, a plurality of combining processes can be performed simultaneously. With this configuration, the antenna 111 can form a reception multi-beam.

  Generally, the reception range is narrowed when the reception sensitivity of the antenna is increased. Further, if the antenna receiving range is widened, the receiving sensitivity is lowered. Therefore, in the present embodiment, by using the antenna 111 provided in the radio wave guidance device 11 as an array antenna, a plurality of reception beams having a high reception sensitivity and a narrow reception range are formed. That is, the radio wave induction device 11 forms a reception multi-beam. Therefore, the radio wave induction device 11 of the present embodiment can receive a wide range of radio waves with high reception sensitivity.

  FIG. 5 is a schematic diagram illustrating a reception multi-beam formed by the radio wave guiding apparatus according to the embodiment. In the illustrated example, the reception multi-beam formed by the radio wave guidance device 11 includes three reception beams 501 to 503. Thus, by forming a plurality of reception beams having high reception sensitivity, the reception range can be expanded while increasing the reception sensitivity.

  As described above, according to the present embodiment, the radio wave induction device 11 includes the antenna 111 that is an array antenna, and forms a plurality of reception beams with high reception sensitivity and a narrow reception range. In addition, the reception directions of the reception beams are different from each other. With this configuration, the radio wave guidance device 11 can further widen the reception range while increasing the reception sensitivity.

  Therefore, even if the target 50 is stealth and the reflected wave reflected from the target 50 is weak, the radio wave guiding device 11 can receive the reflected wave. Further, the radio wave guiding device 11 can receive the reflected wave reflected by the target 50 with a wide field of view because the receiving range can be further expanded while the receiving sensitivity is increased. Therefore, even when the distance between the flying object 10 and the target 50 is long, the radio wave guiding device 11 can receive the reflected wave reflected by the target 50. For example, since the radar 20 has a small antenna, the observation accuracy of the target 50 is low, and even when the flying object 10 cannot be guided to the vicinity of the target 50 when the flying object 10 is launched from the launcher 40, radio wave guidance is performed. The device 11 can receive the reflected wave reflected by the target 50.

  In addition, since the radio wave guiding device 11 can further increase the reception range while increasing the reception sensitivity, the possibility that the reflected wave reflected by the target 50 can be received can be further increased. Further, since the radio wave guiding device 11 can increase the possibility of receiving the reflected wave reflected by the target 50, the possibility of causing the flying object 10 to associate with the target 50 can be further increased. .

  According to the radio wave guidance device, the flying object, and the flying object system of at least one embodiment described above, the antenna 111 that forms a reception multi-beam has the antenna 111 so that the reception sensitivity is further improved and the reflection is performed with a wider field of view. Waves can be received.

  In addition, the whole function of each part with which the flying object 10 and the radio wave guidance apparatus 11 in the above-described embodiment or a part thereof is recorded on a computer-readable recording medium, and a program for realizing these functions is recorded. You may implement | achieve by making a computer system read the program recorded on the recording medium, and executing it. Here, the “computer system” includes an OS and hardware such as peripheral devices.

  The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage unit such as a hard disk built in the computer system. Further, the “computer-readable recording medium” dynamically holds a program for a short time, like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. It is also possible to include those that hold a program for a certain time, such as a volatile memory inside a computer system serving as a server or client in that case. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Flying object system, 10 ... Flying object, 11 ... Radio wave induction device, 12 ... Propulsion device, 13 ... Steering device, 20 ... Radar, 30 ... Control 40 ... launcher, 50 ... target, 111 ... antenna, 112 ... reference signal generator, 113 ... receiver, 114 ... signal processor, 501-503 ... Receive beam, 1111, ... antenna element, 1112, ... converter, 1113 ... combiner

Claims (4)

A passive induction radio induction device,
A plurality of antenna elements that receive radio waves and convert them into analog signals, and a plurality of analog-digital converters that are provided for each of the plurality of antenna elements and convert the analog signals converted by the antenna elements into digital signals And an antenna including a plurality of synthesizers for multiplying the plurality of digital signals converted by the plurality of analog-digital converters by a variable coefficient and synthesizing the plurality of digital signals multiplied by the variable coefficient;
Based on the radio wave received by the antenna, a signal processor that generates a steering signal for the flying body to fly toward the target;
With
The combiner changes the variable coefficient to change the directivity direction of the antenna element to form a receive multi-beam including a plurality of receive beams having different directivity directions;
A radio wave induction device characterized by that. Each of the plurality of combiners forms the plurality of reception beams simultaneously by changing the variable coefficient for each combiner and changing the directivity direction of the antenna element.
  The radio wave induction device according to claim 1. The radio wave guidance device according to claim 1 or 2 ,
A steering device for changing a flying direction based on the steering signal generated by the radio wave induction device;
A flying body characterized by comprising. A flying body according to claim 3 ;
A radar that irradiates a target with radio waves, observes the target, and acquires target observation information ;
A control device that calculates the launch direction and launch timing of the flying object based on the target observation information, and outputs a launch instruction to the launcher ;
The launcher for launching the flying object based on the launch instruction ;
Flying object system including.

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