JPH11183100A - Flying object guidance device - Google Patents

Abstract

(57) [Summary] The present invention aims at realizing high-precision guidance while reliably eliminating interference. An X-band antenna having a frequency band in which a frequency used by a ground radar and a center frequency are substantially the same is provided on a flying object.
And the Ku band antenna 10 for guidance, the X band antenna 13
After detecting the microwaves from the interfering wave source and performing tracking and launch control of the projectile 20, the Ku band antenna 10 guides the interfering wave source and receives interference from the guidance system including the Ku band antenna 10. In this case, the terrestrial radar 21 performs tracking and launch control of the flying object 20 and launches it to perform initial guidance, and the Ku band antenna 10 detects the microwave from the interfering wave source and generates the microwave. The directional information is generated on the basis of the information and guided to the interference wave source, thereby achieving the intended purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flying object guidance device suitable for guiding a flying object such as an anti-aircraft missile.

[0002]

2. Description of the Related Art Conventionally, a flying object guidance device has a target tracking radar that captures and tracks a target, controls the launching of the flying object with the ground radar, and after launching the radar device mounted on the flying object. There is a system in which a target is guided by following the target. In such an aircraft guidance system, if the ground radar is obstructed, the entire system will be ineffective and
Since the capture distance is relatively short and the miss distance is relatively large, it is not satisfactory in terms of guidance accuracy, and there is a strong demand for improvement.

As countermeasures, the transmission power of a flying object radar device is increased, the reception sensitivity is improved, the transmission power of a terrestrial radar is increased to improve the guidance accuracy, and the frequency of the terrestrial radar is improved. There has been proposed a method of eliminating a disturbance by providing a frequency switching means for selectively switching the frequency.

However, in the flying object guidance device of the above-mentioned method, it is difficult to improve the guidance accuracy because it is technically difficult to increase the power and the reception sensitivity, and to use a frequency switching means. Even if the provision is made to eliminate the induced interference, it is difficult to eliminate the interference because the interference countermeasure is broken by configuring the switching of the frequency of the interference wave on the interference side.

[0005]

As described above, the conventional flying object guiding apparatus has a problem that it is difficult to improve the guiding accuracy and is susceptible to interference. The present invention has been made in view of the above circumstances, and has a simplified configuration.
It is an object of the present invention to provide a flying object guidance device capable of realizing reliable interference elimination and realizing highly accurate guidance.

[0006]

According to the present invention, there is provided a flying object guiding apparatus for guiding a flying object which is fired and controlled on the basis of acquisition and tracking information acquired by a ground radar, wherein the flying object is transmitted from the ground radar. A receiving means mounted on the projectile for receiving an interfering wave having substantially the same center frequency as the microwave in the first frequency band to obtain an angular error, and being capable of controlling the direction; and different from the microwave in the first frequency band. Irradiating microwaves in a second frequency band in a target direction and receiving reflected waves thereof to obtain an angle error; transmitting / receiving means mounted on the flying object so as to be capable of directivity control; and an angular error obtained by the receiving means. A first follow-up processing unit that generates directional information based on the directional control of the receiving unit, and a second tracking processing unit that generates directional information based on the angle error acquired by the transmitting and receiving unit and controls the directional control of the transmitting and receiving unit. Tracking processing means, the target is captured and tracked based on the microwaves from the ground radar, and the launch control is performed.After the flying object is fired, the second processing is performed based on the angle error acquired by the transmitting / receiving means. A first guidance mode in which the flying object is guided to a target by the directional information generated by the tracking processing means; in a state where an interference wave in the first frequency band is received, the reception means receives the interference wave and interferes Obtain the angle error of the wave source, capture and follow the interfering wave source based on the directional information generated by the first following processing means based on the angle error, and in a state where the launch control is completed, the flying object becomes the interfering wave source. Then, the transmitting / receiving means detects an angle error of a disturbing wave source, and the second tracking processing means generates directional information based on the angular error, and disturbs the flying object with the directional information. Guide to wave source A second guidance mode, wherein the target is captured and followed based on the microwaves from the ground radar, is fired and controlled, and the flying object is fired, and receives an interference wave in the second frequency band. In the state where the initial guidance of the flying object is continued and the transmitting / receiving means has acquired the angular error information of the interfering wave source, the directional information is obtained by the second tracking processing means based on the angular error acquired by the transmitting / receiving means. Mode selecting means for generating and setting a third guiding mode for guiding the flying object to an interfering wave source based on the directional information.

[0007] According to the above arrangement, the flying object captured and followed by the ground radar is guided to the target by the directional information generated by the second following processing means based on the angle error obtained by the transmitting and receiving means. When the ground radar is disturbed, the directional information to the disturbing wave source can be obtained by detecting the disturbing wave source by the receiving means and switching and controlling the first following processing means and the second following processing means of the transmitting and receiving means. Acquired, guided the flying object to the interfering wave source, and when intercepted by the transmitting and receiving means, the target was captured and followed by the ground radar, fired and controlled, and the transmitting and receiving means became able to detect the interfering wave source In this state, it is guided to the interference wave source via the second following processing means. As a result, even when the ground radar and the transmission / reception means are obstructed, it is possible to guide the flying object with high accuracy, and it is possible to increase the capture distance at the time of guidance by the transmission / reception means, thereby reducing the angle measurement error. , The miss distance is reduced, and the guidance accuracy is improved.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a flying object guidance device according to an embodiment of the present invention.
The u-band antenna 10 constitutes a flying object guidance radar.
Connected to band receiving section 11a. The Ku band antenna 10 is connected to the guided flying object 20 (see FIG. 2).
Is mounted on the input terminal, and the input terminal
The Ku band transmitting section 11b of the band transceiver 11 is connected. As a result, the Ku band antenna 10 sets the transmission microwave fKu1 from the Ku band transmitting section 11b to the target 2
2 (see FIG. 2), receives the reflected wave fku2 reflected by the target 22, and outputs it to the Ku band receiving section 11a.

The Ku band receiver 11 has a Ku
The Ku tracking processor 12a of the signal processor 12 is connected to the band receiver 11a. This Ku follow-up processing unit 12a
The input signal from the Ku band antenna 10 is connected to one output terminal, and the other input terminal is connected to one input terminal of a selection circuit section 12b for setting the induction mode switching.

An X-band antenna 13 is mounted on the flying object 20 so as to be able to control the direction. The X-band antenna 13 has a function of receiving an X-band microwave whose center frequency is substantially the same as the frequency band used by the terrestrial radar 21 (see FIG. 2). X band receiving section 14a is connected. One output terminal of the X tracking processor 12c of the signal processor 12 is connected to the signal input terminal of the X band antenna 13. The other output terminal of the X tracking processing unit 12c is connected to the other input terminal of the selection circuit unit 12b. The selection circuit unit 12b generates steering command information based on the command information θKu and θX from the Ku tracking processing unit 12a and the X tracking processing unit 12c, and guides the flying object 20.

In the above configuration, in the normal guidance mode without obstruction, as shown in FIG. 3A, the ground radar 21 captures and follows the target 22 and controls the launching of the flying object 20. Is fired toward the target 21 via a firing device (not shown). Here, in the Ku-band transceiver 11, the Ku-band transmitter 11b radiates the Ku-band microwave FKu1 in the target direction via the Ku-band antenna 10, and the reflected wave fKu2 through the Ku-band antenna 10 to the Ku-band. The signal is input to the band receiver 11a. K
The u-band receiving unit 11a converts the reflected wave fKu2 into an angular error εKu, and converts the reflected wave fKu2 into a Ku tracking processing unit 12a of the signal processing unit 12.
Output to

The Ku tracking processing unit 12a calculates the directional information θKu based on the input angle error εKu and calculates the directional information θKu.
2b. The selection circuit unit 12b generates steering command data based on the input directivity information θKu, and
Steering “0” leads to the target 22. At the same time, the Ku tracking processing unit 12a generates phase shift amount data based on the directional information θKu, outputs the data to the Ku band antenna 10, and controls the directional direction of the Ku band antenna 10.

When an X-band interference wave is given to the ground radar 21, the ground radar 21 is rendered incapable.
In the guidance mode at the time of the disturbance in which the terrestrial radar 21 is in a powerless state, as shown in FIG. 3B, first, the pointing of the X band antenna 13 is controlled via the X tracking processing unit 12c, and the interference from the interference wave source is controlled. It receives the interference wave fx and outputs it to the X-band receiver 14a. The X band receiving unit 14a acquires the angle error εX based on the input interference wave fx and outputs the angle error εX to the X tracking processing unit 12c. The X tracking processing unit 12c generates directional information θX based on the input angle error εX, generates phase shift amount data based on the directional information θX, controls the direction of the X band antenna 13, and controls Follow capture and execute launch control.

Then, in a state where the interference wave source is captured and followed and the launch control is completed, the flying object 20 is launched toward the interference wave source via the above-mentioned launching device (not shown). After launching the flying object, the Ku band transmitter 1 of the Ku band transceiver 11
1b radiates a Ku-band microwave FKu1 through the Ku-band antenna 10 toward the source of the interfering wave, and the reflected wave f
Ku2 is received by the Ku band antenna 10 and input to the Ku band receiving unit 11a.

The Ku band receiving section 11a receives the reflected wave f
Ku2 is converted into an angular error εKu and output to the Ku tracking processor 12a of the signal processor 12. The Ku follow-up processing unit 12a
The directional information θKu is calculated based on the input angle error εKu and output to the selection circuit unit 12b. The selection circuit unit 12b
Steering command data is generated based on the input directional information θKu, and the flying object 20 is steered to be guided to an interference wave source. At the same time, the Ku tracking processing unit 12a generates phase shift amount data based on the directional information θKu, outputs the data to the Ku band antenna 10, and controls the directional direction of the Ku band antenna 10.

Further, when the Ku band interfering wave is applied to the flying object, the guidance system on the flying object side is rendered inoperative. In the guidance mode at the time of disturbance in which the guidance system on the flying object side is disabled, as shown in FIG. 3 (c), first, the ground radar 21 captures and follows the interference wave source (target), controls the launch, and captures. In a state where the following is completed, the flying object 20 is launched via the launching device (not shown). After the launch, the flying object 20 continues the so-called initial / middle-term guidance based on the capture following information at the time of launch, and the Ku band antenna 10 receives the microwave and outputs it to the Ku band receiving unit 11a. The Ku band receiving unit 11a determines an interference wave based on the input microwave, obtains an angle error εKu based on the microwave, and outputs it to the Ku tracking processing unit 12a. The Ku tracking processing unit 12a acquires the command information θKu based on the input angle error εKu and outputs it to the selection circuit unit 12b. The selection circuit unit 12b generates steering command data based on the input command information θKu, and guides it to an interference wave source based on the steering command data.

As described above, the above-mentioned flying object guiding apparatus mounts the X band antenna 13 and the Ku band antenna 10 for guidance on the flying object 20 by mounting the X band antenna 13 and the center frequency of the frequency band which are substantially the same as the center frequency used by the ground radar 21 on the ground. When the radar 21 is disturbed, the X-band antenna 13 detects the microwaves from the disturbing wave source, and performs the capture and tracking of the flying object 20 and the launch control. Then, the Ku band antenna 10 guides the disturbing wave source. The Ku band antenna 1 of the flying object 20
If the ground system 21
In accordance with the above, the capturing and following of the flying object 20 is executed and the launch control is performed, the launching is performed toward the interfering wave source, the initial guidance is performed, and the Ku band antenna 10 detects the microwave from the interfering wave source and based on the microwave. The directional information is generated and guided to the interference wave source.

According to this, even when the guidance system including the terrestrial radar 21 and the Ku band antenna 10 is obstructed, the flying object 20 can be guided with high accuracy, and the Ku including the Ku band antenna 10 can be guided. The capture distance at the time of guidance by the band transceiver 11 can be increased,
The angle measurement error can be reduced, the miss distance can be reduced, and the guidance accuracy can be improved.

In the above embodiment, the ground radar 2
Although the description has been given of the case where the frequency of use 1 is the X band and the frequency for guiding the flying object 20 is the Ku band, the present invention is not limited to this. Therefore, it is needless to say that the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

[0020]

As described above in detail, according to the present invention, there is provided a flying object guidance apparatus which can realize a reliable elimination of interference and a highly accurate guidance with a simple structure. Can be provided.

[Brief description of the drawings]

FIG. 1 is a view showing a flying object guidance device according to an embodiment of the present invention.

FIG. 2 is a view showing the operation concept of FIG. 1;

FIG. 3 is a view showing a guidance mode in FIG. 1;

[Explanation of symbols]

 10 Ku band antenna. 11 ... Ku band transceiver. 11a: Ku band receiving unit. 11b ... Ku band transmission unit. 12 ... Signal processor. 12a ... Ku follow-up processing unit. 12b ... selection circuit section. 12c: X follow-up processing unit. 13 ... X band antenna. 14. X-band receiver. 14a: X band receiving unit. 20 ... flying object. 21 ... Ground radar. 22… Goal.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G05D 1/12 G05D 1/12 A

Claims (2)

[Claims] 1. A flying object guidance device for guiding a launched flying object by launch control based on acquisition tracking information acquired by a terrestrial radar, comprising: a microwave in a first frequency band transmitted from the terrestrial radar; Receiving means mounted on the flying object so as to be able to control the direction thereof to receive an interference wave having substantially the same center frequency and obtain an angular error; and a microwave in a second frequency band different from the microwave in the first frequency band. Irradiating the target in the target direction, receiving the reflected wave and receiving the reflected wave to obtain an angle error, transmitting and receiving means mounted on the flying object so as to be capable of directivity control, and generates directional information based on the angle error obtained by the receiving means. First tracking processing means for controlling the direction of the receiving means, and second tracking processing means for generating direction information based on the angle error acquired by the transmitting and receiving means and controlling the direction of the transmitting and receiving means; After the target is captured and tracked based on the microwave from the upper radar, the launch control is performed, and after the projectile is fired, the target is generated by the second tracking processing means based on the angular error obtained by the transmitting and receiving means. A first guiding mode for guiding the flying object to a target based on directional information; in a state where an interfering wave in the first frequency band is received, an interfering wave is received by the receiving means to obtain an angle error of the interfering wave source; In a state where the launch control is completed by capturing and following the interfering wave source with the directional information generated by the first tracking processing means based on the angle error,
The flying object is fired toward the interfering wave source, and thereafter, the transmitting and receiving means detects an angle error of the interfering wave source, and the second tracking processing means generates directional information based on the angular error, and generates the directional information. A second guidance mode for guiding the flying object to an interfering wave source based on information, and capturing and following a target based on microwaves from the terrestrial radar, and launch control, and the flying object is fired; When an interference wave in a frequency band is received, the initial guidance of the flying object is continued, and in a state where the transmission / reception means has acquired the angle error information of the disturbance wave source, the angle error is obtained based on the angle error acquired by the transmission / reception means. Mode selecting means for generating directional information by a second following processing means and setting a third guiding mode for guiding the flying object to an interfering wave source based on the directional information. apparatus. 2. The flying object guidance device according to claim 1, wherein the first frequency band is an X band, and the second frequency band is a Ku band.