JP2001133545A - Target information collecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a target information collecting device capable of performing a pint monitor control of a radar device in accordance with geographical condition and target information condition, and of exerting maximum ability of the radar device in a system in which target information collected by the radar device is transmitted to a processor executing target information processing. SOLUTION: In a processor of a target information collecting device, a radar device has a function of computing a point monitor direction and a point monitor target based on a result of processing of search area and target information of the radar device to perform the point direction monitor and the point target monitor so as to implement efficient target information collection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a target information collecting apparatus for detecting an anti-aircraft target such as an aircraft or a missile with a plurality of radar devices to collect and process information on the anti-aircraft target.

[0002]

2. Description of the Related Art Conventionally, when performing anti-aircraft monitoring over a wide range,
If the number of radar devices cannot be covered, a method of distributing a plurality of radar devices is adopted. In the distributed placement method, the search coverage of each radar device is calculated based on the altitude data of the terrain and the maximum detection distance of the radar device, and the radar device is placed at a position where there is no gap and it seems to be optimal for collecting target information However, each radar device collects target information in the search coverage area. Also, each radar device collects the collected target information in the processing device, correlates and integrates the stored target information with the previously collected target information, and executes processes such as identification of a friend and determination of a threat level. The target information subjected to correlation integration by the processing device and subjected to each processing is not fed back to each radar device, and each radar device collects the target information of the search coverage at a fixed period. Was. As described above, the conventional target information collecting device is an open loop system including the processing device and the radar device. FIG.
FIG. 1 is a conceptual diagram of the operation of a conventional target information collecting apparatus. In FIG. 1, reference numeral 1 denotes an anti-aircraft target, 2 denotes a radar apparatus which is distributed over a wide area and searches the entire circumference at a fixed period to collect target information, 3
Reference numeral denotes a search coverage area of the radar device, 4 denotes a processing device for processing target information collected by the plurality of radar devices 2, and 5 denotes a signal cable for transmitting information from the plurality of radar devices 2 to the processing device 4. FIG. 9 is a block diagram of a conventional target information collecting apparatus, in which 2 is a radar device, 4 is a processing device, 6 is a position information acquisition unit for locating the position of the radar device 2, and 7 is target information. A radio wave transmitting / receiving unit for transmitting / receiving a radio wave to be collected, a signal processing unit 8 for processing detection data received by the radio wave transmitting / receiving unit 7 and generating target information, a radio wave irradiation control unit 9 for controlling the radio wave irradiation of the radar device 2, Is a target track integration unit that integrates target information transmitted from the signal processing units 8 of the plurality of radar devices 2 as target tracks, 11 is an integrated target information storage unit that stores the target tracks integrated by the target track integration unit 10, Reference numeral 12 denotes a terrain database storing terrain data, and 13 denotes a radar search cover for calculating a search coverage area of the radar device 2 from the self-position data of the position information acquisition unit 6 and the terrain data of the terrain database 12. A calculation unit 14 is a calculation unit that performs processing for displaying the target information stored in the target information storage unit 11, and 15 is an input / output unit that outputs and displays the calculation result of the calculation unit 14 and is input by an operator. .

Next, the operation will be described. The search coverage calculation unit 13 of the processing device 4 calculates the search coverage at the location of each radar device 2 based on the terrain data of the terrain database 12 and the maximum detection distance of each radar device 2. The search coverage of each radar device 2 is calculated by, for example, generating a search coverage only by the maximum detection distance of the radar device 2 as shown in FIG. Of the search coverage at that time
Then, as shown in FIG. 10B, the terrain data at the same position as the outer periphery 16 of the search coverage area is read from the terrain database 12 and superimposed on the vertical section 17.
As shown in FIG. 10C, the line from the radar device 2 to the outer periphery 16 of the search coverage area is connected by a straight line 18, and it is determined whether or not the terrain data overlaps in the middle of the straight line 18. If there is an overlap with the terrain according to the determination result, the area from the contact point 19 to the outer periphery 16 of the search coverage area is determined to be outside the search coverage area. By performing the same operation over the entire circumference, the search coverage of the radar device can be obtained. Each radar device 2 searches for an anti-aircraft target 1 flying within its own search cover area, and after detecting the anti-aircraft target 1, obtains target information such as a target position and a target speed obtained by processing the detected data by the signal processing unit 8. The signal is transmitted to the processing device 4 via the signal cable 5. The processing device 4 is a radar device 2
The target track integrated unit 10 correlates and integrates the target information collected from the target track as a target track. For example, as shown in FIG. 11, the target track integrating unit 10 generates the correlation gate 20 with the target track 1 a before the present time stored in the integrated target information storage unit 11 as the center. . Target information collected in the next search cycle is collected from each radar device 2, and 1b and 1c are transmitted to the target track integrating unit 11 as respective target tracks. Integrate information. The target information correlated and integrated by the target track integration unit 10 is stored again in the integrated target information storage unit 11, displayed by the calculation unit 14, and output to the input / output unit 15. Thus, the processing device 4
Is not fed back to each radar device 2, and each radar device 2 repeats the process of transmitting the target information detected in each search coverage to the processing device 4. In the operation method of such a processing device and a plurality of radar devices, in collecting target information, a search is also performed for a direction that does not need to be searched and also for a direction that needs to be monitored, so that the performance of the radar device is fully exhibited. Can not do.

Further, the target information may include information targeting a radar device, such as a radio wave source missile. The radio wave source missile detects radio waves emitted from the radar device and invades. Therefore, in the above-described operation system, even a target that poses a threat to the radar device is inadvertently irradiated with radio waves, and a threat is caused by itself.

[0005]

When collecting target information using a radar device capable of controlling the direction of radio wave irradiation,
It has the advantage that the direction of radio wave irradiation can be controlled instantaneously and freely. However, as in the past, by rotating the direction of radio wave irradiation at a fixed period, the search is performed in the entire circumferential direction, target information is collected, and the target information is transmitted to a processing device for information processing. In this case, the radar device cannot control the direction of radio wave irradiation in accordance with the topographical conditions and the status of the target information, which not only wastes searching for unnecessary directions but also spends time searching for unnecessary directions. Cannot be allocated to information collection of the target existing in the search coverage area, and the accuracy of the target information cannot be improved.

[0006] Further, the target information collecting method as described above has a problem in that a target that is a threat to the radar device is constantly irradiated with radio waves to invite and destroy the threat by itself, so that the target information collecting activity cannot be performed. there were.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. For an operation of monitoring a wide area using a plurality of radar devices, an optimum search coverage area of each radar device is converted into topographical conditions and target information. It is an object of the present invention to maximize the capability of a radar device capable of controlling the direction of radio wave irradiation by sequentially controlling the direction of radio wave irradiation.

Further, target information collected by a plurality of radar devices is integrated, a radio wave source missile which is a threat of the radar device is determined by classification judgment, and radio wave irradiation of the radar device targeted by the radio wave source missile is performed. It is an object of the present invention to improve the target information collecting ability by controlling and supervising the radio source missile with a radar device that is not a target.

[0009]

According to a first aspect of the present invention, there is provided a target information collecting apparatus which uses a plurality of radar devices capable of controlling the direction of radio wave irradiation, and uses a plurality of radar devices to control a search coverage area of each radar device to determine the position and topography of the radar device. The target information calculated from the data and collected by each radar device is processed and integrated by the processing device, so that the radar device's important monitoring direction currently required from the search coverage of the radar device and the status of the integrated target information And the priority monitoring target is calculated, and the integrated target information and the calculated priority monitoring direction and the priority monitoring target are fed back to the radar device side, thereby realizing the monitoring of the priority direction of the radar device and the monitoring of the priority target. It is.

A target information collecting apparatus according to a second aspect of the present invention uses a plurality of radar apparatuses whose radio wave irradiation directions can be controlled, and uses a plurality of radar apparatuses to determine the search coverage area of each radar apparatus, the position of the radar apparatus, terrain data, and weather data. The radar monitoring network without gaps is constructed by calculating from the target information, and the target information collected by each radar device is processed and integrated by the processing device. Priority monitoring direction and priority monitoring target of the radar device are calculated, and the integrated target information and the calculated priority monitoring direction and priority monitoring target are fed back to the radar device side. Monitoring is realized.

A target information collecting apparatus according to a third aspect of the present invention integrates target information collected by a plurality of radar apparatuses, performs a classification determination, and determines that the target radar is a target for a radio wave source missile. It controls the radio wave irradiation of the device to prevent the invasion, and realizes the priority monitoring with the radar device which is not targeted.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is an overall configuration diagram of a target information collecting device according to a first embodiment of the present invention. In FIG. 1, reference numeral 2 denotes a radar device, 4 is a processing device, 6 is a position information acquisition unit that evaluates the position of the radar device 2, Reference numeral 7 denotes a radio wave transmitting / receiving unit that transmits and receives radio waves for collecting target information, 8 denotes a signal processing unit that processes detection data received by the radio wave transmitting / receiving unit 7 and generates target information, and 9 denotes a radio wave that controls radio wave irradiation of the radar device 2. An irradiation control unit 10 is a target track integration unit that integrates target information transmitted from the signal processing unit 8 as a target track, 11 is an integrated target information storage unit that manages and stores the integrated target track, and 12 is terrain data. A terrain database 13, a radar search coverage calculating unit that calculates a search coverage of the radar device 2 from the self-position data of the position information acquisition unit 6 and the terrain data of the terrain database 12, Calculation unit for calculating a priority monitoring orientation and focus monitoring target from the radar search covering area calculated from the target information and the radar search covering region computing unit 13 of the information storage unit 11, 15 operation unit 14
An input / output unit that displays the calculation result of
Reference numeral 16 denotes a target information storage unit that stores target information sequentially transmitted from the integrated target information storage unit 11. Also, FIG.
It is an operation | movement conceptual diagram of the target information collection device which shows Embodiment 1 of this invention.

Next, the operation will be described. The self-position information is periodically transmitted from the position information acquisition unit 6 to execute the same calculation as the calculation of the search coverage of the conventional radar device,
The search coverage of the radar device 2 is sequentially calculated by the radar search coverage calculation unit 13 based on the self-position information and the topography data from the topography database 12. When the target 1 enters the calculated search coverage area of the radar device, the radio wave transmitting / receiving unit 7 receives the reflected wave of the irradiated radio wave from the target 1 and processes the received data by the signal processing unit 8. The target information such as the position of the target 1, the radar effective reflection area, and the speed information is calculated. At the same time, the radio wave transmitting and receiving unit 7 transmits a friend identification signal,
If there is a response, identification information of an ally is given to the target information if there is no response, and target information including an enemy / friend identification result is transmitted from the signal processing unit 8 to the processing device 4. Using a conventional target track correlation integration method, the target track integration unit 10 performs correlation integration processing with a target track before the current time or a target track from another adjacent radar apparatus 2. If a plurality of radar devices 2 transmit the same target information to the processing device 4 and the identification information is different, the investigator may use the input / output unit 1
5 to input the enemy / friend identification result. Next, from the target invasion direction

[0014]

(Equation 1)

The target threat level is determined in accordance with the above, and the threat level is expressed as a numerical value. Here, K is the threat level, R is the distance from the area 27 to be protected to the target 1 as shown in FIG. 5, V is the velocity vector of the target 1 to be protected from the area 27, and E is a proportional constant to the identification information. Yes, if the determination result is a friend, it is set to 0, and if it is an enemy, a certain numerical value is added. The target information to which the threat degree determination result is assigned is stored in the integrated target information storage unit 11 in a database as shown in FIG. The target information stored in the integrated target information storage unit 11 is transmitted to and stored in the target information storage unit 16 in real time. As a result, the radar devices 2 and the processing devices 4 that are widely distributed are always provided with the same target information. The calculation unit 14 designates a target whose threat level exceeds a certain value as a priority target, compares the search coverage of the plurality of radar devices 2 with the position of the priority monitoring target, selects a radar device 2 capable of priority monitoring, and The priority monitoring target number is designated to the irradiation control unit 9. The radio wave irradiation control 9 compares the priority monitoring target number specified by the arithmetic unit 14 with the target number stored in the target information storage unit 16 and controls the radio wave transmitting / receiving unit 7 to radiate radio waves in the same target direction. Perform priority monitoring of priority monitoring targets.

When there are a plurality of important monitoring targets in the same direction, the arithmetic unit 14 calculates an average position of the plurality of targets from the respective target information stored in the integrated target information storage unit 11 and calculates the average position of the plurality of targets. The range in which a plurality of targets in the same direction are present is designated to the radar device 2 as the important monitoring direction. The radio wave irradiation control unit 9 controls radio wave irradiation to a designated azimuth around the average position of a plurality of targets, and performs weighted monitoring.

Embodiment 2 FIG. FIG. 2 is an overall configuration diagram of a target information collecting apparatus according to a second embodiment of the present invention. In the figure, reference numeral 28 denotes a weather database storing propagation characteristics of radio waves according to atmospheric conditions.

Next, the operation will be described. The weather database 29 has data on the atmospheric attenuation rate of radio waves for each weather condition as shown in FIG. As for radio waves, the atmospheric attenuation rate changes greatly depending on the state of the atmosphere. For example, the maximum detection distance decreases in rainy weather because it attenuates as compared to fine weather. When the weather condition of the search range is input from the input / output unit 15, the atmospheric attenuation corresponding to the input condition is transmitted to the radar search coverage calculation unit 13, and the radar search coverage calculation unit 13 calculates the radar maximum from the transmitted atmospheric attenuation. The detection distance is calculated, and the search coverage of the radar device 2 is calculated from the terrain data from the terrain database 12. A radar network without gaps is constructed from the calculated search coverage and target information is collected.

Embodiment 3 FIG. 3 is an overall configuration diagram of a target information collecting apparatus according to Embodiment 3 of the present invention. In the figure, reference numeral 24 denotes a classification determination unit that performs classification determination on an integrated target track.

Next, the operation will be described. The target information collection device is intended to collect target information to invade the area to be protected, but some of the targets include, for example,
There are radar-target missiles, such as anti-radiation missiles. The anti-radiation source missile detects radio waves emitted from the radar device 2 and invades and destroys the position where the radar device 2 is provided. Radar device 2 from the radio source missile
Target information collected by the plurality of radar devices 2 is integrated by the target track integration unit 10. The integrated target track is determined by the classification determination unit 24 using the target track, the radar effective reflection area, and the speed information, as a fighter, an attack helicopter,
It is classified into cruise missiles, ground missiles, and radio source missiles. Classification of anti-radiation missiles is performed on the condition that the route is predicted from the target track and there is a radar device on the predicted route, not an area to be protected, the radar effective reflection area is extremely small, and the speed is very fast . The target tracks subjected to the classification processing are further given a threat level determination and stored in the integrated target information storage unit 11. The arithmetic unit 14 transmits a command to the radio wave irradiation control unit 9 to stop the radio wave irradiation to the radar device 2 on the predicted route when the classification result of the integrated target wake includes the target determined to be the radio wave missile. Then, the radio wave irradiation controller 9 stops the radio wave irradiation. On the other hand, the arithmetic unit 14 designates a target classified as a radio wave source missile as an important monitoring target for another adjacent radar device 2 which is not a target of the radio wave source missile, and performs priority monitoring.

[0021]

According to the first aspect of the present invention, a plurality of radar apparatuses and processing apparatuses share the same target information,
It is possible to optimally control the important direction monitoring and the important target monitoring of each radar device with respect to the search coverage area, and it is possible to efficiently collect the target information.

Further, by calculating the important point monitoring direction and the important point monitoring target of the radar apparatus using the target information collected by the radar apparatus, the radar apparatus can execute the important point direction monitoring and the high point target monitoring. The device can efficiently collect target information.

According to the second aspect, since the search coverage of the radar apparatus is calculated based on the weather data in addition to the position information and the topographical data of the radar apparatus, a radar network without gaps can be constructed. Performance can be fully exhibited.

According to the third aspect of the present invention, the integrated target information is categorized and, when a radio wave source missile which is a threat of the radar device is determined, the radio wave irradiation of the target radar device is controlled. In addition, by performing the priority monitoring of the radio wave source missile with another radar apparatus that is not the target, it is possible to efficiently collect the target information without destroying the radar apparatus.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a first embodiment of a target information collecting device according to the present invention.

FIG. 2 is an operation conceptual diagram of the target information collecting device according to the present invention.

FIG. 3 is an overall configuration diagram showing Embodiment 2 of a target information collecting device according to the present invention.

FIG. 4 is an overall configuration diagram showing Embodiment 3 of a target information collecting device according to the present invention.

FIG. 5 is a conceptual diagram showing Equation 1 according to the present invention. It is a conceptual diagram of a target database.

FIG. 6 is a conceptual diagram of a target database according to the present invention.

FIG. 7 is a conceptual diagram of a weather database according to the present invention.

FIG. 8 is a conceptual diagram showing the operation of a conventional radar device and processing device.

FIG. 9 is an overall configuration diagram of a conventional radar device and processing device.

FIG. 10 is a conceptual diagram illustrating a technique for calculating a radar device coverage area based on terrain data.

FIG. 11 is a conceptual diagram showing a method of correlation integration processing.

[Explanation of symbols]

1 target, 2 radar devices, 3 radar device search coverage, 4 processing device, 5 signal cable, 6 position information acquisition unit, 7 radio wave transmission / reception unit, 8 signal processing unit, 9 radio wave irradiation control unit, 10 target track integration unit , 11 integrated target information storage unit, 12 terrain database, 13 radar search coverage calculation unit, 14 operation unit, 15 input / output unit, 16 outer perimeter of search coverage, 17 vertical cross section of terrain data, 18 radar and ridge Connecting line, 19 Contact point where radar search coverage and terrain data are in contact, 20 Correlation gate, 21 Target information storage unit, 22 Area to be protected, 23 Weather database, 24 Classification judgment unit.

Claims (3)

[Claims] A location information acquisition unit that acquires location information;
A target information storage unit for storing target information, a radio wave irradiation control unit for controlling a radio wave irradiation direction based on the target information stored in the target information storage unit and information from the outside, and control by the radio wave irradiation control unit A plurality of radar devices, which are composed of a radio transmission / reception unit for transmitting / receiving radio waves in a given direction, and a signal processing unit for processing information received by the radio transmission / reception unit, which are distributed over a wide area and whose radio wave irradiation direction can be controlled; A terrain database storing terrain data of the terrain around the deployment position of the device, and a search coverage area of each radar device from the terrain data in the terrain database and the position information output from the position information acquisition unit of each radar device. A radar search coverage calculating unit that calculates
A target track integration unit that integrates a target track from information on a target position, a target speed, and a radar effective reflection area output by signal processing, and a target track integrated by the target track integration unit is stored and stored in the target information storage unit. An integrated target information storage unit for outputting stored information, and a priority monitoring direction and a priority monitoring of each radar device based on the target information stored in the integrated target information storage unit and the search coverage of each radar device. A target information collecting apparatus, comprising: a processing unit including a calculation unit that calculates a target and outputs a control signal for controlling a radio wave irradiation direction of the radar device to the radio wave irradiation control unit. 2. The target information collecting device, wherein a meteorological database in the processing device storing atmospheric attenuation factor data of radio waves corresponding to weather conditions, and an atmospheric attenuation factor data of the meteorological database, and stored in a terrain database. 2. A radar search coverage calculating unit for calculating a search coverage of each radar device based on existing terrain data and position information output from a position information acquisition unit of each radar device. Target information collection device. 3. The target information collecting device, wherein a target classification is determined from information on a target position, a radar effective reflection area, and a target speed stored in an integrated target information storage unit, and a radio wave as a threat of the radar device is determined. Means for determining the source missile, means for controlling the radio wave irradiation of the radar device targeted by the radio wave source missile, and control so that other radar devices that are not the target are focused on the radio missile 2. The target information collecting device according to claim 1, further comprising means for performing.