JP2000081297A - Projectile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform wide range searching in a short time while grasping a plurality of targets within beam width separately by providing a local oscillating section, a frequency detecting section, and the like, so that the angle of a plurality of incoming radio waves can be detected simultaneously at the time of wide range searching exceeding the beam width and searching within beam width. SOLUTION: A guide unit 1 is provided with an antenna section 3 for receiving radio wave radiated from a target 2 and delivering a receiving signal to a receiving section 4 where the receiving signal is subjected to frequency conversion with a reference signal from a local oscillating section 5, amplification and phase detection to produce a video signal. The video signal is converted at an A/D converting section 6 into a digital video signal and delivered to a frequency detecting section 7. Based on a frequency information signal received from the frequency detecting section 7, a DBF processing section 10 calculates the angle of incoming radio wave from a plurality of targets simultaneously through Fourier transform. Subsequently, an angle detecting section 8 detects the angle of incoming radio wave from each target and a guide signal is outputted from a guide signal calculating section 9 based on the detected angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DBF (Digital B) for separating angles of radio waves arriving from a plurality of targets.
eam Forming) processing, MUSIC (MULT)
iple Signal Classificatio
n) Guidance apparatus using priority processing that can perform a wide area search in a short time by using the processing, improve the accuracy of guiding to the target, and immediately shift to the next candidate when the tracking target is lost. It is intended to propose a flying object with.

[0002]

2. Description of the Related Art FIG. 9 shows the operation of a flying object.
The flying object 20 emitted from the launching device 21 flies toward an area where a plurality of targets 2a, 2b, and 2c exist, performs search and tracking processing, and finally flies toward one target. I do. FIG. 10 shows the configuration of the flying object 20, wherein 1 is a guiding device, 31 is a warhead, 3
2 is a propulsion device, and 33 is a steering device.

FIG. 8 shows a conventional guidance device for a flying object. In the drawing, reference numeral 1 denotes a guidance device, 2 denotes a target, 3 denotes a radio wave radiated from a target 2 and a reception signal is transmitted to a reception unit 4. The output antenna unit 4 converts the frequency of the received signal output from the antenna unit 3 by the reference signal from the local oscillator 5, amplifies and detects the phase, and outputs a video signal. The local oscillator 6 outputs a reference signal whose frequency has been changed by the frequency control signal from the receiver 3 to the receiver 3, and converts the video signal output from the receiver 4 into a digital video signal and then outputs it to the frequency detector 7. The A / D converter 7 analyzes the frequency of the digital video signal from the A / D converter 6 and outputs it to the angle detector 8, and outputs a frequency control signal to the local oscillator 5.
Is an angle detection unit that detects the angle of an incoming radio wave from each target from the frequency information signal of the frequency detection unit 7 by monopulse arithmetic processing and outputs the angle to the guidance signal calculation unit 9. A guidance signal calculation unit that calculates and outputs a guidance signal.

[0004]

In the conventional flying object guidance apparatus as described above, as shown in FIG. 11 (a), a signal processing is performed while traversing a narrow beam width during a wide search, so that the search is not performed. take time. In addition, when there are a plurality of targets within the beam width, they cannot be separated, and the accuracy of guiding to the targets decreases. Also, if the target is lost during tracking, it is necessary to search again.

[0005] The present invention has been made to solve such a problem, and a wide area search can be performed in a short time. Also, a plurality of targets within the beam width can be separated, and the accuracy of guiding to the targets is improved. Further, if the target is lost during tracking, the tracking can be immediately shifted to the next candidate target without re-searching. These are used for search and tracking of the guidance device of the flying object.

[0006]

According to a first aspect of the present invention, there is provided a flying object guidance apparatus for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, and a local oscillation unit for transmitting the reception signal to a local oscillation unit. And a local oscillator that outputs a video signal by performing frequency conversion, amplification, phase detection, and a video signal based on the reference signal, and a reference signal whose frequency is changed by the frequency control signal from the frequency detector to the receiver. An A / D converter for converting the video signal into a digital video signal and outputting the digital video signal to a frequency detector; and a frequency for analyzing the frequency of the digital video signal, outputting the digital video signal to a DBF processor, and outputting a frequency control signal to a local oscillator. A detection unit, a DBF processing unit that calculates angles of radio waves arriving from a plurality of targets simultaneously from the frequency information signal of the frequency detection unit by Fourier transform processing, and a DBF processing unit An angle detection unit that detects the angle of the arriving radio wave from each target and outputs it to the guidance signal calculation unit by monopulse arithmetic processing of these output signals, and a guidance that calculates and outputs a guidance signal from the target angle signal from the angle detection unit. FIG. 11 is a flying object guidance device provided with a signal calculation unit.
As shown in (b), the entire search range is completed by one search D
By performing Fourier transform in the BF processing unit, the angle of a plurality of arriving radio waves can be obtained simultaneously with the angular resolution of the beam width, and a function of performing a wide-area search in a short time is provided.

In accordance with a second aspect of the present invention, there is provided a flying object guiding apparatus for receiving a radio wave radiated from a target and outputting a received signal to a receiving unit, and transmitting the received signal to a reference signal from a local oscillation unit. A receiving unit that outputs a video signal by performing frequency conversion, amplification and phase detection, a local oscillation unit that outputs a reference signal whose frequency is changed by a frequency control signal from the frequency detecting unit to the receiving unit, and the video signal An A / D converter for converting the digital video signal into a digital video signal and then outputting the digital video signal to a frequency detector; a frequency detector for analyzing the frequency of the digital video signal, outputting the digital video signal to an angle detector, and outputting a frequency control signal to a local oscillator; An angle detector for detecting an angle of an incoming radio wave from each target by a monopulse arithmetic processing of a frequency information signal of the frequency detector and outputting the angle to a MUSIC processor; A flying object guidance device comprising: a MUSIC processing unit that calculates angles of radio waves arriving from a plurality of targets simultaneously from a target angle signal of the same; and a guidance signal calculation unit that calculates and outputs a guidance signal from an output signal of the MUSIC processing unit. When the plurality of arriving radio waves are received within the beam width as shown in FIG. 11C, the MUSIC processing unit obtains the angles of the plurality of arriving radio waves at the same time. With the function to improve.

In accordance with a third aspect of the present invention, there is provided a flying object guidance apparatus for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, and transmitting the reception signal to a reference signal from a local oscillation unit. A receiving unit that outputs a video signal by performing frequency conversion, amplification and phase detection, a local oscillation unit that outputs a reference signal whose frequency is changed by a frequency control signal from the frequency detecting unit to the receiving unit, and the video signal An A / D converter for converting the digital video signal into a digital video signal and then outputting the digital video signal to a frequency detector; a frequency detector for analyzing the frequency of the digital video signal, outputting the digital video signal to an angle detector, and outputting a frequency control signal to a local oscillator; An angle detection unit that detects the angle of the arriving radio wave from each target by a monopulse arithmetic processing of the frequency information signal of the frequency detection unit and outputs the angle to the priority processing unit; A priority processing unit that calculates the tracking order from a plurality of targets from the target angle signal and tracks the next candidate target as a backup during tracking, and a guidance signal that calculates and outputs a guidance signal from the target selection signal of the priority processing unit FIG. 11 is a flying object guidance device equipped with a calculation unit.
As shown in (d), when there are a plurality of arriving radio waves, tracking is performed with θ1 having a small angle of the arriving radio waves as the priority order 1.
Then, a function is provided in which backup tracking is performed with θ2 having a small angle of the arriving radio wave as priority 2, and when the tracking target of priority 1 is lost, the target can be immediately shifted to the target of priority 2 without re-searching.

A fourth aspect of the present invention is a flying object guidance device, comprising: an antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit; and transmitting the reception signal to a reference signal from a local oscillation unit. A receiving unit that outputs a video signal by performing frequency conversion, amplification and phase detection, a local oscillation unit that outputs a reference signal whose frequency is changed by a frequency control signal from the frequency detecting unit to the receiving unit, and the video signal An A / D converter for converting the digital video signal into a digital video signal and then outputting the digital video signal to a frequency detector; a frequency detector for analyzing the frequency of the digital video signal, outputting the digital video signal to a DBF processor, and outputting a frequency control signal to a local oscillator; A DBF processing unit for calculating angles of radio waves arriving from a plurality of targets simultaneously from the frequency information signal of the frequency detection unit by Fourier transform processing;
An angle detection unit that detects the angle of an incoming radio wave from each target by a monopulse calculation process on the output signal from the processing unit and outputs it to the MUSIC processing unit, and an incoming radio wave from a plurality of targets simultaneously from the target angle signal of the angle detection unit M to calculate the angle of
A flying object guidance device including a USIC processing unit and a guidance signal calculation unit for calculating and outputting a guidance signal from an output signal of the MUSIC processing unit, wherein the entire search range is 1 as shown in FIG. A search that can be performed at the same time with the angular resolution of the beam width by performing a Fourier transform in the DBF processing unit and performing a wide-range search in a short time; FIG. When multiple incoming radio waves are received within the beam width,
The SIC processing unit has a function to improve the accuracy of guidance to a target by simultaneously determining the angles of a plurality of incoming radio waves.

In accordance with a fifth aspect of the present invention, there is provided a flying object guidance apparatus, comprising: an antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit; and transmitting the reception signal to a reference signal from a local oscillation unit. A receiving unit that outputs a video signal by performing frequency conversion, amplification and phase detection, a local oscillation unit that outputs a reference signal whose frequency is changed by a frequency control signal from the frequency detecting unit to the receiving unit, and the video signal An A / D converter for converting the digital video signal into a digital video signal and then outputting the digital video signal to a frequency detector; a frequency detector for analyzing the frequency of the digital video signal, outputting the digital video signal to a DBF processor, and outputting a frequency control signal to a local oscillator; A DBF processing unit for calculating angles of radio waves arriving from a plurality of targets simultaneously from the frequency information signal of the frequency detection unit by Fourier transform processing;
An output signal from the processing unit is subjected to monopulse arithmetic processing to detect the angle of the arriving radio wave from each target and output to the priority processing unit.The tracking order of a plurality of targets is determined from the target angle signal of the angle detection unit. A flying object guidance device that has a priority processing unit that tracks the next candidate target as a backup during calculation and tracking, and a guidance signal calculation unit that calculates and outputs a guidance signal from the target selection signal of the priority processing unit. Then, as shown in FIG. 11B, the entire search range can be obtained by one search, and the angle of a plurality of arriving radio waves can be obtained simultaneously with the angular resolution of the beam width by performing the Fourier transform in the DBF processing unit. A means that can perform a search in a short time and, when there are a plurality of arriving radio waves, as shown in FIG. Back up tracking the smaller angle θ2 of the wave as priority 2, with the ability to migrate quickly to the target priority 2 without re-search if the tracking target priority 1 is lost.

A flying object guiding apparatus according to a sixth aspect of the present invention is an antenna for receiving a radio wave radiated from a target and outputting a received signal to a receiving section, and transmitting the received signal to a reference signal from a local oscillation section. A receiving unit that outputs a video signal by performing frequency conversion, amplification and phase detection, a local oscillation unit that outputs a reference signal whose frequency is changed by a frequency control signal from the frequency detecting unit to the receiving unit, and the video signal An A / D converter for converting the digital video signal into a digital video signal and then outputting the digital video signal to a frequency detector; a frequency detector for analyzing the frequency of the digital video signal, outputting the digital video signal to an angle detector, and outputting a frequency control signal to a local oscillator; An angle detector for detecting an angle of an incoming radio wave from each target by a monopulse arithmetic processing of a frequency information signal of the frequency detector and outputting the angle to a MUSIC processor; MUSIC processing unit that calculates the angles of the arriving radio waves from a plurality of targets at the same time from the target angle signal, and calculates the tracking order of the plurality of targets from the output signals of the MUSIC processing unit, and tracks the next candidate target as a backup during tracking. FIG. 11 (c) is a flying object guidance device including a priority processing unit for performing a calculation and a guidance signal calculation unit for calculating and outputting a guidance signal from a target selection signal of the priority processing unit.
As shown in FIG. 11D, when a plurality of arriving radio waves are received within the beam width, the MUSIC processing unit obtains the angles of the plurality of arriving radio waves at the same time to improve the guidance accuracy. As described above, when there are a plurality of arriving radio waves, tracking is performed with θ1 having a small angle of the arriving radio wave as the priority level 1. Next, θ2 having the small angle of the arriving radio wave is tracked as the priority level 2, and backup tracking is performed. In the event of a loss, the ability to immediately transition to a priority 2 goal without re-searching.

Further, a flying object guidance device according to a seventh aspect of the present invention is an antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, and transmitting the reception signal to a reference signal from a local oscillation unit. A receiving unit that outputs a video signal by performing frequency conversion, amplification and phase detection, a local oscillation unit that outputs a reference signal whose frequency is changed by a frequency control signal from the frequency detecting unit to the receiving unit, and the video signal An A / D converter for converting the digital video signal into a digital video signal and then outputting the digital video signal to a frequency detector; a frequency detector for analyzing the frequency of the digital video signal, outputting the digital video signal to a DBF processor, and outputting a frequency control signal to a local oscillator; A DBF processing unit for calculating angles of radio waves arriving from a plurality of targets simultaneously from the frequency information signal of the frequency detection unit by Fourier transform processing;
An angle detection unit that detects the angle of an incoming radio wave from each target by a monopulse calculation process on the output signal from the processing unit and outputs it to the MUSIC processing unit, and an incoming radio wave from a plurality of targets simultaneously from the target angle signal of the angle detection unit M to calculate the angle of
A USIC processing unit, a priority processing unit that calculates the tracking order of a plurality of targets from the output signals of the MUSIC processing unit and tracks the next candidate target as a backup during tracking, and a guidance signal from the target selection signal of the priority processing unit. Is a flying object guidance device provided with a guidance signal calculation unit that calculates and outputs the following. By performing a single search on the entire search range as shown in FIG. 11B, the DBF processing unit performs a Fourier transform. A means for simultaneously obtaining the angles of a plurality of arriving radio waves with the angular resolution of the beam width and performing a wide-area search in a short time, and a method for receiving a plurality of arriving radio waves within the beam width as shown in FIG. When the MUSIC processing unit determines the angles of a plurality of arriving radio waves at the same time to improve the accuracy of guidance to the target, and when there are a plurality of arriving radio waves as shown in FIG. The θ1 having the smaller angle of the arriving radio wave is tracked as the priority 1, but the θ2 having the smaller angle of the arriving radio wave is then backed up as the priority 2, and if the tracking target of the priority 1 is lost, priority is given without re-searching. It has a function that can immediately move to the goal of the second place.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a block diagram showing a first embodiment of the present invention. In FIG. 1, a DBF processing unit 10 is different from the conventional example of FIG.
Is equivalent to the conventional example. 1 is a guidance device, 2 is a target, 3 is an antenna unit that receives a radio wave radiated from the target 2 and outputs a reception signal to a reception unit 4, 4 is a reception signal output from the antenna unit 3 from a local oscillation unit 5 The receiving unit 5 converts the frequency into a video signal by performing frequency conversion, amplification, phase detection, and conversion into a video signal, and outputs the signal to the A / D conversion unit 6.
The local oscillator 6 outputs a reference signal whose frequency has been changed by the frequency control signal from the receiver 3 to the receiver 3, and converts the video signal output from the receiver 4 into a digital video signal and then outputs it to the frequency detector 7. A / D converter, 7 is A
A frequency detector that analyzes the frequency of the digital video signal from the / D converter 6 and outputs it to the DBF processor 10 and outputs a frequency control signal to the local oscillator 5;
The angle detector detects the angle of the radio wave arriving from each target from the output signal from the target by monopulse arithmetic processing, and outputs it to the guidance signal calculator 9. The angle detector 9 calculates the guidance signal from the target angle signal of the angle detector 8. The output guidance signal calculation unit 10 is a DBF processing unit that calculates the angles of radio waves arriving from a plurality of targets simultaneously from the frequency information signal of the frequency detection unit 7 by Fourier transform processing.

By adopting such a configuration, it is possible to obtain the angles of a plurality of arriving radio waves at the same time with the angular resolution of the beam width. Search can be performed in a short time.

Embodiment 2 FIG. 2 is a block diagram showing a second embodiment of the present invention. In FIG. 2, 11 new MUSIC processing units are different from the conventional example of FIG. 8, and 1 to 9 are equivalent to the conventional example. 1 is a guidance device, 2 is a target, 3 is an antenna unit that receives a radio wave radiated from the target 2 and outputs a reception signal to a reception unit 4, 4 is a reception signal output from the antenna unit 3 from a local oscillation unit 5 Frequency conversion by the reference signal, amplification, phase detection, and conversion into a video signal,
A receiving unit that outputs to the D converting unit 6, a local oscillator that outputs a reference signal whose frequency is changed by the frequency control signal from the frequency detecting unit 7 to the receiving unit 3, and a video that is output from the receiving unit 4 An A / D converter that converts the signal into a digital video signal and outputs it to the frequency detector 7;
A frequency detector for frequency-analyzing the digital video signal from the converter 6 and outputting it to the angle detector 8 and outputting a frequency control signal to the local oscillator 5. The frequency information signal of the frequency detector 7 is subjected to monopulse arithmetic processing. An angle detection unit that detects an angle of an incoming radio wave from each target and outputs the angle to the MUSIC processing unit 11, a guidance signal calculation unit 9 that calculates and outputs a guidance signal from an output signal of the MUSIC processing unit 11, and an angle detection unit 11. A MUSIC processing unit that calculates angles of radio waves arriving from a plurality of targets simultaneously from the target angle signal of the unit 8.

By adopting such a configuration, the angles of the radio waves arriving from a plurality of targets within the beam width can be obtained at the same time, and the accuracy of guiding to the targets is improved.

Embodiment 3 FIG. 3 is a block diagram showing a third embodiment of the present invention. In the drawing, a new part from the conventional example of FIG. 8 is 12 priority processing units, and 1 to 9 are equivalent to the conventional example. 1 is a guidance device, 2 is a goal, 3 is a goal 2.
The antenna unit 4 receives radio waves radiated from the antenna unit and outputs a reception signal to the reception unit 4. The antenna unit 4 converts the frequency of the reception signal output from the antenna unit 3 by using a reference signal from the local oscillation unit 5, amplifies the signal, and performs phase detection. A / A
A receiving unit that outputs to the D converting unit 6, a local oscillator that outputs a reference signal whose frequency is changed by the frequency control signal from the frequency detecting unit 7 to the receiving unit 3, and a video that is output from the receiving unit 4 An A / D converter that converts the signal into a digital video signal and outputs it to the frequency detector 7;
A frequency detector for frequency-analyzing the digital video signal from the converter 6 and outputting it to the angle detector 8 and outputting a frequency control signal to the local oscillator 5. The frequency information signal of the frequency detector 7 is subjected to monopulse arithmetic processing. An angle detection unit 9 for detecting the angle of the arriving radio wave from each target and outputting the angle to the priority processing unit 12, a guidance signal calculation unit 12 for calculating and outputting a guidance signal from the target selection signal of the priority processing unit 12, Is a priority processing unit that calculates the tracking order of a plurality of targets from the target angle signal of the angle detection unit 8 and tracks the next candidate target as a backup during tracking.

By adopting such a configuration, even if the tracking target of priority 1 is lost, tracking can be immediately shifted to the target of priority 2 without re-searching.

Embodiment 4 FIG. 4 is a block diagram showing a fourth embodiment of the present invention. In the drawing, new parts from the conventional example of FIG. 8 are 10 DBF processing units and 11 MUSIC processing units. Are equivalent. 1 is a guidance device, 2 is a target, 3 is an antenna unit that receives a radio wave radiated from the target 2 and outputs a reception signal to a reception unit 4, 4 is a reception signal output from the antenna unit 3 from a local oscillation unit 5 A receiving unit that performs frequency conversion, amplification, phase detection, and conversion into a video signal based on the reference signal, and outputs the video signal to the A / D conversion unit 6;
Reference numeral 5 denotes a local oscillator for outputting a reference signal whose frequency has been changed by the frequency control signal from the frequency detector 7 to the receiver 3. Reference numeral 6 denotes a frequency after converting the video signal output from the receiver 4 into a digital video signal. A / D converter for outputting to the detector 7, frequency analysis of the digital video signal from the A / D converter 6, output to the DBF processor 10, and output of a frequency control signal to the local oscillator 5 Department,
8 detects the angle of the radio wave arriving from each target by monopulse arithmetic processing of the output signal from the DBF processing unit 10,
An angle detection unit that outputs to the MUSIC processing unit 11, and 9 is an MU
A guidance signal calculation unit 10 for calculating and outputting a guidance signal from an output signal of the SIC processing unit 11, and a DBF process 10 for simultaneously calculating angles of arriving radio waves from a plurality of targets from the frequency information signal of the frequency detection unit 7 by Fourier transform processing The unit 11 is a MUSIC processing unit that calculates angles of radio waves arriving from a plurality of targets simultaneously from the target angle signal of the angle detection unit 8.

By adopting such a configuration, the same effects as in the first and second embodiments can be expected.

Embodiment 5 FIG. 5 is a block diagram showing a fifth embodiment of the present invention. In the drawing, 10 DBF processing units and 12 priority order processing units are newer parts than the conventional example of FIG. Is equivalent to 1 is a guidance device, 2 is a target, 3 is an antenna unit that receives a radio wave radiated from the target 2 and outputs a reception signal to a reception unit 4, 4 is a reception signal output from the antenna unit 3 from a local oscillation unit 5 A receiving unit that performs frequency conversion, amplification, phase detection, and conversion into a video signal based on the reference signal, and outputs the video signal to the A / D conversion unit 6;
Reference numeral 5 denotes a local oscillator for outputting a reference signal whose frequency has been changed by the frequency control signal from the frequency detector 7 to the receiver 3. Reference numeral 6 denotes a frequency after converting the video signal output from the receiver 4 into a digital video signal. A / D converter for outputting to the detector 7, frequency analysis of the digital video signal from the A / D converter 6, output to the DBF processor 10, and output of a frequency control signal to the local oscillator 5 Department,
8 detects the angle of the radio wave arriving from each target by monopulse arithmetic processing of the output signal from the DBF processing unit 10,
An angle detection unit 9 for outputting to the priority processing unit 12, a guidance signal calculation unit 9 for calculating and outputting a guidance signal from the target selection signal of the priority processing unit 12, and a Fourier transform process 10 for a frequency information signal of the frequency detection unit 7. A DBF processing unit that calculates the angles of the arriving radio waves from a plurality of targets simultaneously, calculates the tracking order of the plurality of targets from the target angle signal of the angle detection unit 8, and tracks the next candidate target as a backup during the tracking. It is a priority processing unit.

By adopting such a configuration, the same effects as in the first and third embodiments can be expected.

Embodiment 6 FIG. FIG. 6 is a block diagram showing a sixth embodiment of the present invention. In the drawing, new parts from the conventional example of FIG. 8 are 11 MUSIC processing units and 12 priority processing units, and 1 to 9 are conventional examples. Is equivalent to 1 is a guidance device, 2 is a target, 3 is an antenna unit that receives a radio wave radiated from the target 2 and outputs a reception signal to a reception unit 4, 4 is a reception signal output from the antenna unit 3 from a local oscillation unit 5 The receiving unit, which converts the frequency by the reference signal, amplifies, phase-detects and converts it to a video signal, and outputs it to the A / D converter 6, is a reference whose frequency is changed by the frequency control signal from the frequency detector 7. A local oscillator for outputting a signal to the receiver 3; an A / D converter 6 for converting a video signal output from the receiver 4 into a digital video signal and then outputting the digital video signal to a frequency detector 7; A frequency detection unit for frequency-analyzing the digital video signal from the unit 6 and outputting it to the angle detection unit 8 and outputting a frequency control signal to the local oscillation unit 5;
Detects the angle of the radio wave arriving from each target by the monopulse arithmetic processing of the frequency information signal of the frequency detector 7 and
An angle detecting section 9 for outputting to the USIC processing section 11 is a guiding signal calculating section 9 for calculating and outputting a guiding signal from a target selection signal of the priority processing section 12, and a plurality of targets 11 are simultaneously obtained from the target angle signal of the angle detecting section 8. A MUSIC processing unit 12 for calculating an angle of an incoming radio wave from the MUSIC processing unit 12 is a priority processing unit for calculating the tracking order of a plurality of targets from the output signal of the MUSIC processing unit 11 and tracking the next candidate target as a backup during tracking. .

By adopting such a configuration, the same effects as in the second and third embodiments can be expected.

Embodiment 7 FIG. 7 is a block diagram showing a seventh embodiment of the present invention. In the drawing, new parts from the conventional example of FIG. 8 are 10 DBF processing units, 11 MUSIC processing units, and 12 priority processing units. , 1 to 9 are equivalent to the conventional example. 1 is a guidance device, 2 is a target, 3 is an antenna unit that receives a radio wave radiated from the target 2 and outputs a reception signal to a reception unit 4, 4 is a reception signal output from the antenna unit 3 from a local oscillation unit 5 Frequency conversion by the reference signal of
The receiving unit 5 that amplifies and detects the phase and converts the signal into a video signal and outputs the signal to the A / D conversion unit 6 outputs the reference signal whose frequency is changed by the frequency control signal from the frequency detecting unit 7 to the receiving unit 3. A local oscillation unit 6 converts the video signal output from the reception unit 4 into a digital video signal, and then outputs the digital video signal to a frequency detection unit 7. A digital video signal output from the A / D conversion unit 6 is converted by the A / D conversion unit 7. Frequency analysis and DBF
A frequency detection unit that outputs the frequency control signal to the local oscillation unit 5 and outputs the frequency control signal to the local oscillation unit 5, and detects the angle of the radio wave arriving from each target by monopulse arithmetic processing on the output signal from the DBF processing unit 10; An angle detector 9 for outputting to the MUSIC processor 11, a guide signal calculator 9 for calculating and outputting a guide signal from the target selection signal of the priority processor 12, and a 10 by Fourier transform processing from the frequency information signal of the frequency detector 7. A DBF processing unit 11 for simultaneously calculating angles of radio waves arriving from a plurality of targets is provided.
The USIC processing unit 12 is a priority processing unit that calculates the tracking order of a plurality of targets from the output signal of the MUSIC processing unit 11 and tracks the next candidate target as a backup during tracking.

By adopting such a configuration, the same effects as those of the first, second, and third embodiments can be expected.

[0027]

According to the first aspect of the present invention, a wide range search over the beam width can be performed in a short time.

According to the second aspect of the present invention, a plurality of targets within the beam width can be separated for angle measurement, and the accuracy of guiding to the targets can be improved.

Further, according to the third aspect, even when the tracking target of priority 1 is lost, tracking can be immediately shifted to the target of priority 2 without re-searching.

According to the fourth aspect of the present invention, a wide-range search of a beam width or more can be performed in a short time, and a plurality of targets within the beam width can be separated and measured to improve the accuracy of guiding to the targets. I do.

According to the fifth aspect of the present invention, a wide-range search of a beam width or more can be performed in a short time, and even if the tracking target of priority 1 is lost, the target of priority 2 can be used without re-searching. Tracking can be shifted immediately.

According to the sixth aspect of the present invention, a plurality of targets within the beam width can be separated for angle measurement to improve the accuracy of guidance to the targets, and when the tracking target of priority 1 is lost. The tracking can immediately shift to the priority 2 target without re-searching.

According to the seventh aspect of the present invention, a wide range search over the beam width can be performed in a short time, and a plurality of targets within the beam width can be separated for angle measurement, thereby improving the accuracy of guiding to the targets. In addition, even when the tracking target of the priority 1 is lost, the tracking can be immediately shifted to the target of the priority 2 without re-searching.

[Brief description of the drawings]

FIG. 1 is a diagram showing Embodiment 1 of a flying object guidance device according to the present invention.

FIG. 2 is a diagram showing Embodiment 2 of a flying object guidance apparatus according to the present invention.

FIG. 3 is a diagram showing a flying object guidance device according to a third embodiment of the present invention.

FIG. 4 is a view showing a fourth embodiment of a flying object guiding apparatus according to the present invention;

FIG. 5 is a view showing Embodiment 5 of a flying object guidance apparatus according to the present invention.

FIG. 6 is a view showing a sixth embodiment of a flying object guidance apparatus according to the present invention.

FIG. 7 is a diagram showing Embodiment 7 of a flying object guidance apparatus according to the present invention.

FIG. 8 is a diagram showing a conventional flying object guidance device.

FIG. 9 is a diagram showing operation of a flying object.

FIG. 10 is a diagram showing a configuration of a flying object.

FIG. 11 is an explanatory diagram of a method for searching and tracking a flying object.

[Explanation of symbols]

1 Guidance device, 2 goals, 2a goals, 2b goals, 2
c Target, 3 antennas, 4 receivers, 5 local oscillators, 6 A / D converters, 7 frequency detectors, 8 angle detectors, 9 guidance signal calculators, 10 DBF processors, 11
MUSIC processing section, 12 priority processing section, 20 projectile, 21 launch device, 31 warhead, 32 propulsion device, 33 steering device.

Claims (7)

[Claims] An antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, a frequency conversion of the reception signal by a reference signal from a local oscillation unit, amplification and phase detection, and a video signal A local oscillator that outputs a reference signal whose frequency has been changed by a frequency control signal from the frequency detector to the receiver, and outputs the video signal to the frequency detector after converting the video signal into a digital video signal. A / D (Analog / Digital) conversion unit that performs frequency analysis of the digital video signal and DBF
(Digital Beam Forming) A frequency detection unit that outputs to a processing unit and outputs a frequency control signal to a local oscillation unit, and simultaneously calculates the angles of incoming radio waves from a plurality of targets by Fourier transform processing from the frequency information signal of the frequency detection unit. A DBF processing unit, an angle detection unit that detects an angle of an arriving radio wave from each target by a monopulse calculation process on an output signal from the DBF processing unit and outputs the angle to a guidance signal calculation unit, and guides the output signal from the target angle signal of the angle detection unit. A flying object provided with a guidance signal calculation unit for calculating and outputting a signal, wherein the guidance device is characterized in that a wide area search over a beam width can be performed in a short time. 2. An antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, a frequency conversion of the reception signal by a reference signal from a local oscillation unit, amplification and phase detection, and a video signal. A local oscillator that outputs a reference signal whose frequency has been changed by a frequency control signal from the frequency detector to the receiver, and outputs the video signal to the frequency detector after converting the video signal into a digital video signal. An A / D conversion unit, a frequency detection unit that analyzes the frequency of the digital video signal and outputs it to an angle detection unit and outputs a frequency control signal to a local oscillation unit, and a frequency information signal of the frequency detection unit is processed by monopulse arithmetic processing. MUSIC (MULTIPL)
e Signal Classification) An angle detection unit that outputs to a processing unit, a MUSIC processing unit that calculates angles of radio waves arriving from a plurality of targets simultaneously from target angle signals of the angle detection unit, and an induction signal from an output signal of the MUSIC processing unit A guiding device comprising a guiding signal calculation unit for calculating and outputting, wherein a plurality of targets within a beam width can be separated and angled to improve the guiding accuracy to the targets. Sho body. 3. An antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, a frequency conversion of the reception signal by a reference signal from a local oscillation unit, amplification and phase detection, and a video signal. A local oscillator that outputs a reference signal whose frequency has been changed by a frequency control signal from the frequency detector to the receiver, and outputs the video signal to the frequency detector after converting the video signal into a digital video signal. An A / D conversion unit, a frequency detection unit that analyzes the frequency of the digital video signal and outputs it to an angle detection unit and outputs a frequency control signal to a local oscillation unit, and a frequency information signal of the frequency detection unit is processed by monopulse arithmetic processing. An angle detector that detects the angle of the incoming radio wave from the target and outputs the angle to the priority processor, and calculates the tracking order of a plurality of targets from the target angle signal of the angle detector. A guiding device including a priority processing unit that tracks a next candidate target as a backup during tracking, and a guiding signal calculating unit that calculates and outputs a guiding signal from a target selection signal of the priority processing unit, wherein the tracking target is A flying object equipped with a guidance device characterized in that even if it is lost, it can immediately move to the next candidate's tracking target without re-searching. 4. An antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, a frequency conversion of the reception signal by a reference signal from a local oscillation unit, amplification and phase detection, and a video signal A local oscillator that outputs a reference signal whose frequency has been changed by a frequency control signal from the frequency detector to the receiver, and outputs the video signal to the frequency detector after converting the video signal into a digital video signal. An A / D converter, a frequency detector that frequency-analyzes the digital video signal, outputs the digital video signal to a DBF processor, and outputs a frequency control signal to a local oscillator, and a Fourier transform process from the frequency information signal of the frequency detector. A DBF processing unit that calculates angles of radio waves arriving from a plurality of targets;
The output signal from the DBF processing unit is subjected to monopulse arithmetic processing to detect the angle of the arriving radio wave from each target.
An angle detection unit that outputs to the processing unit; a MUSIC processing unit that calculates angles of radio waves arriving from a plurality of targets simultaneously from target angle signals of the angle detection unit; and a guidance signal that is calculated and output from an output signal of the MUSIC processing unit A guidance device provided with a guidance signal calculation unit, in which a wide range search over a beam width can be performed in a short time, and a plurality of targets within a beam width can be separated and measured to improve the guidance accuracy to the targets. A flying object equipped with a guidance device characterized by the following. 5. An antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, a frequency conversion of the reception signal by a reference signal from a local oscillation unit, amplification and phase detection, and a video signal A local oscillator that outputs a reference signal whose frequency has been changed by a frequency control signal from the frequency detector to the receiver, and outputs the video signal to the frequency detector after converting the video signal into a digital video signal. An A / D converter, a frequency detector that frequency-analyzes the digital video signal, outputs the digital video signal to a DBF processor, and outputs a frequency control signal to a local oscillator, and a Fourier transform process from the frequency information signal of the frequency detector. A DBF processing unit that calculates angles of radio waves arriving from a plurality of targets;
An angle detection unit that detects an angle of an incoming radio wave from each target by using a monopulse calculation process on an output signal from the DBF processing unit and outputs the angle to a priority processing unit, and a plurality of target tracking orders from the target angle signal of the angle detection unit A priority processing unit that calculates the target of the next candidate as a backup during tracking and
A guidance device having a guidance signal calculation unit that calculates and outputs a guidance signal from a target selection signal of a priority processing unit, in which a wide area search over a beam width can be performed in a short time, and when a tracking target is lost. A flying object equipped with a guidance device characterized by being able to immediately move to the next candidate's tracking target without re-searching. 6. An antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, a frequency conversion of the reception signal by a reference signal from a local oscillation unit, amplification and phase detection, and a video signal A local oscillator that outputs a reference signal whose frequency has been changed by a frequency control signal from the frequency detector to the receiver, and outputs the video signal to the frequency detector after converting the video signal into a digital video signal. An A / D conversion unit, a frequency detection unit that analyzes the frequency of the digital video signal and outputs it to an angle detection unit and outputs a frequency control signal to a local oscillation unit, and a frequency information signal of the frequency detection unit is processed by monopulse arithmetic processing. An angle detection unit that detects the angle of the radio wave arriving from the target and outputs it to the MUSIC processing unit; A MUSIC processing unit that calculates an angle of a radio wave, a priority processing unit that calculates a tracking order of a plurality of targets from an output signal of the MUSIC processing unit and tracks a next candidate target as a backup during tracking, and a priority processing unit. A guidance device comprising a guidance signal calculation unit for calculating and outputting a guidance signal from a target selection signal, wherein a plurality of targets within a beam width can be separated and angled to improve guidance accuracy to the targets, and further, tracking. A flying object equipped with a guidance device characterized in that even if the target is lost, it is possible to immediately shift to the next candidate tracking target without re-searching. 7. An antenna unit for receiving a radio wave radiated from a target and outputting a reception signal to a reception unit, a frequency conversion of the reception signal by a reference signal from a local oscillation unit, amplification and phase detection, and a video signal A local oscillator that outputs a reference signal whose frequency has been changed by a frequency control signal from the frequency detector to the receiver, and outputs the video signal to the frequency detector after converting the video signal into a digital video signal. An A / D converter, a frequency detector that frequency-analyzes the digital video signal, outputs the digital video signal to a DBF processor, and outputs a frequency control signal to a local oscillator, and a Fourier transform process from the frequency information signal of the frequency detector. A DBF processing unit that calculates angles of radio waves arriving from a plurality of targets;
An angle detection unit that detects an angle of an output signal from the DBF processing unit by a monopulse calculation process and outputs the angle to a MUSIC processing unit, and a MUSIC process that simultaneously calculates angles of radio waves arriving from a plurality of targets from target angle signals of the angle detection unit. Part and M
A priority processing unit that calculates the tracking order of a plurality of targets from the output signal of the USIC processing unit and tracks the next candidate target as a backup during tracking, and calculates and outputs a guidance signal from the target selection signal of the priority processing unit. A guidance device equipped with a guidance signal calculation unit, which can perform a wide-range search of a beam width or more in a short time, and can separate and measure angles of a plurality of targets within the beam width to improve guidance accuracy to the targets. Also, a flying object equipped with a guidance device characterized in that even if the tracking target is lost, the target can be immediately shifted to the next candidate tracking target without re-searching.