JP3446669B2 - Detecting method and detecting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detection method and a detection device for detecting a threat target by a radar and identifying it, and irradiating a jamming radio wave so as not to be identified by the target.

[0002]

2. Description of the Related Art FIG. 24 shows, for example, JP-A-60-1622.
It is a block diagram which shows the conventional detection apparatus shown by the No. 00 publication, 1 is a fire control radar, 2 is ES
M (Electronic Support Meas
ures: electronic support measures, 14 is ECM (Ele)
ctronic Counter Measures:
(Electronic counter means), 18 is a display device, and 19 is an ESM2 that detects the specifications of an opponent when it is disturbed by the target, and changes the frequency of the fire control radar so as not to be disturbed, or the fire control radar. 1 is a control computer that controls firearms such as missiles based on output information of ESM 2 when the target is not obtained, or controls so that ECM 14 interference and fire control radar do not cause electromagnetic interference. A data bus connects between these devices.

Next, a normal operation will be described. When the firearms control radar 1 of its own machine is interfered with by a jammer on the other side of the threat, the ESM 2 causes radio wave specifications, pulse specifications, jamming frequency, received power, radio wave arrival direction, effective radiation area, etc. To detect. Then, the control computer 19 uses the ESM2
The frequency of the fire control radar 1 is changed so as to prevent the fire control radar 1 from being interfered with by receiving the information outputted from the fire control radar 1. When the firearms control radar 1 is disturbed and the firearms control radar 1 cannot obtain a threat target, the ESM 2 searches for the target. When the target is detected, the output information is transmitted from the ESM2 to the control computer 19, and the control computer 19 outputs the output information.
Obtains the target bearing and controls the firearms such as missiles. Further, the control computer 19 controls so that the interference of the ECM 14 of the own machine does not cause the electromagnetic interference to the firearms control radar 1 of the own machine to improve the electronic anti-jamming ability, the weapon control ability, and prevent the electromagnetic interference. To do.

The radar operation of the fire control radar 1 will be described with reference to FIG. In FIG.
In a, a conventional detection device is mounted, and in order to detect the target T, the electron beam is uniformly scanned with an electron beam over a wide coverage area. In this case, for simplification, the azimuth from -60 deg to +60 deg is electronically scanned in the horizontal direction in front of the own device 50a. The electronically scanned electron beam is the target T
When the target T is irradiated, the reflected echo is analyzed by the ESM 2 for the radio wave radiated by the fire control radar 1 of the aircraft 50a or the fire control radar of the target T to recognize the target T.

[0005]

Since the conventional detection device is constructed as described above, the electronic control capability and the weapon control capability of the fire control radar 1 are improved, and the self-propelled EC is improved.
It is possible to prevent electromagnetic interference between the M14 and the fire control radar 1, but there is a problem in that the performance of the fire control radar 1 itself and the jamming ability cannot be improved.
This is due to the conventional detection method of the fire control radar 1, that is, since the wide coverage area is uniformly scanned,
This is because the target T is irradiated with the electron beam once in one electronic scanning, and the information of the echo obtained in one electronic scanning is small, and the detection probability of the target T is lowered.

The present invention has been made to solve the above problems, and an object thereof is to improve detection performance.

[0007]

[0008]

[0009]

[0010]

[0011]

Detection apparatus according to claim 1 SUMMARY OF THE INVENTION The present invention is, E to detect a fire control radar threat target
The IRST based on the SM, the IRST that optically detects the threat target, and the radio wave arrival direction information of the ESM.
Is provided with a threshold control device that limits the search coverage area to the direction of arrival of radio waves and lowers the threshold of the search coverage area to increase detection sensitivity.

The detection device according to claim 2 of the present invention is based on ESM for detecting a fire control radar as a threat target, EO MWS for optically detecting a threat missile, and radio wave arrival direction information of the ESM. A threshold control device is provided which limits the search coverage of the EO MWS to the direction of arrival of radio waves and reduces the threshold of the search coverage to enhance detection sensitivity.

The detection device according to claim 3 of the present invention optically detects a threat target, an ESM that detects a fire control radar as a threat target, an INS that recognizes the position and attitude of the aircraft itself. Based on the IRST and the information output from the INS, the directions of the sun and the ground, which are the main background noises of the IRST, are calculated, the search coverage area is limited to other directions, and the threshold of the search coverage area is determined. And a threshold control calculation device for increasing the detection sensitivity.

The detection device according to claim 4 of the present invention optically detects a threat missile, an ESM for detecting a fire control radar as a threat target, an INS for recognizing the position and attitude of the aircraft itself. Based on the information output from the INS and the EO MWS or IR MWS, the EO
A threshold control calculation device that calculates the direction of the sun and the ground, which are the main background noises of MWS or IR MWS, limits the search coverage to other directions and lowers the threshold of this search coverage to increase detection sensitivity. It is provided.

The detection device according to claim 5 of the present invention is based on ESM for detecting a fire control radar as a threat target, a fire control radar for detecting a threat target by radio waves, and radio wave arrival direction information of the ESM. , A coverage limitation control device for limiting the search coverage of the fire control radar to the arrival direction of the radio wave and controlling the detection of the fire control radar with priority, and the direction of the ESM from the output information of the ESM and the fire control radar The ESM / fire control radar correlator that replaces the information with the direction information of the fire control radar and also adds distance information is provided.

According to a sixth aspect of the present invention, there is provided a detection device based on ESM for detecting a fire control radar as a threat target, IRST for optically detecting a threat target, and radio wave arrival direction information of the ESM. The coverage limitation control device that restricts the search coverage area of the IRST to the radio wave arrival direction and controls scanning and tracking intensively, and replaces the direction information of the ESM with the direction information of the IRST based on the output information of the ESM and IRST. An ESM / IRST correlator is provided.

The detection device according to claim 7 of the present invention is based on the ESM for detecting a fire control radar as a threat target, the RF MWS for detecting a threat missile by radio waves, and the radio wave arrival direction information of the ESM. A coverage limitation control device for limiting the detection coverage of the RF MWS only to the arrival direction of the radio wave and controlling the detection of the threat missile, and the ESM and R
RF ESM direction information from the output information with FMWS
An ESM / RF MWS correlator that replaces MWS direction information and also adds distance information is provided.

According to an eighth aspect of the present invention, there is provided a detection device based on ESM for detecting a fire control radar as a threat target, IRST for optically detecting a threat target, and radio wave arrival direction information of the ESM. A threshold control device that limits the search coverage of the IRST to the direction of arrival of the radio wave and lowers the threshold of the search coverage to increase detection sensitivity,
ESM / IRST which replaces the ESM direction information with the IRST direction information based on the output information of the ESM and IRST
It is provided with a correlator.

The detection device according to claim 9 of the present invention is based on ESM for detecting a fire control radar as a threat target, EO MWS for optically detecting a threat missile, and radio wave arrival direction information of the ESM. , A threshold control device that limits the search coverage of the EO MWS to the arrival direction of the radio wave and lowers the threshold of the search coverage to increase detection sensitivity; and the output information of the ESM and the EO MWS provides the ESM direction information. An ESM / EO MWS correlator that replaces the EO MWS direction information is provided.

[0020]

[0021]

[0022]

The detection device according to claim 10 of the present invention is
ESM that detects a fire control radar that is a threat target, RF MWS that detects a threat missile multiple times by radio waves, and E above.
ESM / RF which replaces the ESM direction information with the RF MWS direction information from the output information of SM and RF MWS
MWS correlator and ECM for radio interference with threat targets
And, based on the missile detection information of the RF MWS, a missile jamming beam controller for directing the jamming beam of the ECM to the arrival direction of the radio wave of the threat missile is provided.

[0024]

[0025]

[0026]

[0027]

[0028]

[0029]

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1. 1 is a block diagram showing a configuration of a detection device according to Embodiment 1 of the present invention, and FIG. 2 is a plan view showing a detection method of the detection device, and the same components as those in FIG. 24 are designated by the same reference numerals. In the figure, 1 is a fire control radar that measures the direction, distance, and speed of a threat target, 2
Are the specifications of fire control radar on the threat target side (specifications of jamming radio waves,
ESM for detecting pulse specifications, that is, interference frequency, received power, pulse repetition frequency, pulse peak value, effective radiation area, radio wave arrival direction, etc., 3 is based on the radio wave arrival direction information of ESM2 and A coverage limitation control device that limits the search coverage to the direction of arrival of radio waves and controls the fire control radar 1 by focusing on the limited narrow range over a plurality of times, 14 is the output information of the ESM2. Based on the above, the ECMs 4 that interfere with the radar operation of the fire control radar that is a threat target are the fire control radar 1, the ESM 2 and the EC.
It is a control device for controlling M14. In the first embodiment,
The search coverage area of the fire control radar 1 as the fire control means is limited to a specific narrow range based on the output of the ESM 2, and then the narrow range is detected a plurality of times.

Next, the operation of the detection apparatus according to the first embodiment will be described with reference to FIG. In the figure,
The aircraft 50 as an aircraft is equipped with the search device according to the first embodiment. Since the normal operation is the same as the conventional one, the case where the target T is detected by the firearms control radar 1 and the ESM 2 will be described below. First, the aircraft 50 starts the search from the front -60 deg and searches the electron beam clockwise. Then, the radio wave radiated from the target T firearms control radar from the +30 deg azimuth is ESM2
Since this signal is detected by, the general threat level judgment is performed after analyzing this signal by ESM2. Here, when the threat level is low, the search is continued, but when the threat level is high and the fire control radar 1 determines that the target T is a threat worthy of the search, the coverage limitation control device 3 Limits the search coverage of the fire control radar 1 only to the vicinity of the arrival direction of the electric wave of the target T obtained by the ESM 2. In this case, ESM2 to +30
The radio wave arrival direction information indicating the direction in which the radio wave is coming from the deg direction is output to the coverage area limiting control device 3. The coverage limitation control device 3 sets phase information in the phaser built in the fire control radar 1 for performing electronic scanning based on the radio wave arrival direction information output from the ESM 2 to set the direction of the electron beam. Is controlled to the direction of arrival of radio waves, and the coverage of this electron beam is changed from the direction of +30 deg to ± 10d, for example.
It is limited to a narrow range up to the direction of eg. Further, the limited coverage control device 3 controls the fire control radar 1, and the +30
The fire control traffic radar 1 is made to perform electronic scanning with emphasis several times (in this case, two extra scans) over the coverage area within a narrow and limited range of ± 10 deg in the deg direction. The number of electronic scans has been increased to a plurality of times (three times in this case) in the present application, as compared with the conventional one.

When the number of electronic scans is increased in this way,
Multiple echoes from the target T can be obtained for analysis
The amount of information increases and the probability of detecting the target T improves. this
Is described using the following formula, the eyes of the fire control radar 1
The detection probability of the mark T is expressed by the following equation. P in the above formula_CIs the final detection probability, P_iIs the i-th
The detection probability of the detected target T is shown, and N is the number of times of detection.
Show. This formula is the best because the number of detections increases.
It shows that the final detection probability improves, and the same detection
Detectability is improved if detection is repeated multiple times
Equivalently, the detection range of the fire control radar 1 can be increased equivalently.
It means that.

For simplicity, the fire control radar 1 is considered to perform beam scanning only in the horizontal direction.
Beam scanning over 60 deg azimuth in 6 seconds (scanning speed:
20 deg / sec). In this case, the time for beam scanning over the entire coverage area is longer than that in the first embodiment.
Increases (± 10 deg x 2 scans = 2 seconds),
Equivalently, the detection distance of the firearms control radar 1 can be increased, and the distant target T can be detected.

It is considered that the beam scanning should be performed quickly over the entire coverage area of ± 60 deg. However, the scanning speed for beam scanning cannot be freely set. The reason is,
Generally, the fire control radar 1 mechanically or electronically scans a beam in the search coverage area to detect the target T, but the beam scanning speed is not as high as that of a normal pulse radar (pulse repetition speed: several milliseconds). This is because it is determined by the pulse repetition rate and the pulse integration number, and in the pulse Doppler radar (pulse repetition rate: several microseconds), it is determined by the FFT processing cycle for converting into the frequency domain and the pulse integration number. Therefore, the scanning speed of the beam cannot be set very freely, and in order to improve the detection probability of the target T by detecting a plurality of times, the search coverage is limited to a specific narrow range as in the first embodiment. It is effective to perform the scanning a plurality of times.

In the above description, the direction of arrival of the radio wave is one direction. However, if there are a plurality of directions of arrival of the radio wave, the search coverage area is limited to the plurality of directions, and then the plurality of directions are reached. Scan. For example, if there are 100 radio wave arrival directions detected as the target T and the coverage areas are limited to all of them, it will not function as a radar system because it takes too much time to scan all coverage areas. Therefore, in this case, the threat determination generally performed by the ESM2 is performed, and the coverage area is limited to only the target T having a high threat level. Here, the high degree of threat refers to a case where the distance from the own device 50 to the target T is short, a case where the target T is approaching the own device 50, and the like.

As another example of limiting the coverage area to the arrival direction of the radio wave, considering the case of mechanical scanning, a signal for limiting the coverage area is transmitted to the servo system for carrying out the mechanical scanning to limit the coverage area. It may be scanned a plurality of times.

Embodiment 2. The second embodiment is shown in FIG.
As shown in FIG. 2, the fire control control means 1 is configured by replacing the fire control traffic radar 1 shown in FIG. 1 with IRST5. For the same reason as in the first embodiment, the detection distance of IRST 5 can be increased. This IRST5
Is an infrared scanning and tracking device (Infra Red Search and T) that detects the threat target T by infrared rays.
rack).

Embodiment 3. The third embodiment is shown in FIG.
, The fire control radar 1 of FIG.
It is replaced with No. 6 to configure fire control means. As in the first embodiment, the detection distance of the RF MWS 6 can be increased. The RF MWS 6, like the fire control radar 1, is a radio frequency missile warning system (Radio frequency) that detects threat missiles by radio waves.
When the missile is detected, missile detection information such as the arrival direction of the missile, the moving speed, and the reflection area is output as will be described later.

Fourth Embodiment This Embodiment 4 is shown in FIG.
As shown in FIG. 3, a threshold control device 7 is used in place of the coverage limitation control device 3 shown in FIG. This threshold control device 7 is based on the radio wave arrival direction information of the ESM2, and detects the IRS only in the radio wave arrival direction.
The search coverage area of T5 is limited, the threshold of this search coverage area is lowered, and the detection sensitivity of the target T is increased.
According to this, the detection distance of the IRST 5 can be increased. In general radar, the noise power (voltage) of the receiver noise is N, and the signal power (voltage) of the reflected echo is
Is S, the echo whose S / N ratio is about 10 dB or more is determined as a target, and therefore, a level of power intensity of about +10 dB with respect to the noise power N of the receiver noise is set as a threshold value. The threshold value is used as the threshold value. The same applies to the case of the IRST 5 in the fourth embodiment, that is, the S / N ratio (where N is the background noise) having a certain level or higher is determined as the target T, and this specific level is the threshold. is there. In the case of general radar, if the threshold decreases,
False alarms (cannot determine target or received noise) increase and performance deteriorates. In the case of IRST5 as well, lowering the threshold makes it easier to detect background noise, but in infrared scanning detection of IRST5, it is common to perform image processing on the detected echo signal, and the image processing apparatus performs threshold control. It is built into the device 7. In this image processing, when the shape of the target T is detected in the obtained image, only this portion is detected, and the other portions are cut off as background noise to improve the performance. When this threshold reduction is performed in the entire coverage area, the signal processing becomes too large and the system does not function, so the coverage area is limited and the image processing is performed.

Embodiment 5. This Embodiment 5 is shown in FIG.
As shown in FIG. 5, EO is used instead of IRST5 shown in FIG.
It replaces the MWS8 and constitutes a fire control system. Similar to the fourth embodiment, the detection distance of the EO MWS8 can be increased. This EO MWS8 is
Lightwave Missile Alert System (Electronic Optics Miss) that optically detects threat missiles
ile Warning System). In this case, when the direction of arrival of the radio wave overlaps with the background noise and the target T is buried in the background noise, the target T is not detected, so the threshold reduction is not performed.

Sixth Embodiment This Embodiment 6 is shown in FIG.
As shown in FIG. 5, in the fourth embodiment shown in FIG. 5, I that recognizes the machine body information (machine body position, machine body posture, etc.) of the own machine 50.
It is configured by adding NS9, and based on the information of INS9, the direction of the sun and the ground, which are the main background noises of IRST5, is calculated, and the search coverage area is limited to other directions. The threshold value of the target T is increased by lowering the threshold value of the target value by the threshold control device 7. According to this, the detection distance of the IRST 5 can be increased. INS9 is an inertial navigation system (Ine
It is the "Natural Navigation System".

Embodiment 7. This Embodiment 7 is shown in FIG.
As shown in FIG. 7, EO is used instead of IRST5 shown in FIG.
It replaces the MWS8 and constitutes a fire control system. Similar to the sixth embodiment, the detection distance of the EO MWS8 can be increased.

Embodiment 8. This Embodiment 8 is shown in FIG.
As shown in FIG. 2, the ESM / fire control ATC radar correlator 10 may be added to the first embodiment, and the ESM 2 output information and the fire control radar 1 output information can be used to determine the ESM.
By replacing the rough azimuth information (resolution: tens of deg) of 2 with the high-accuracy azimuth information of the fire control radar 1 and further adding the distance information, it is possible to enhance the discrimination ability of the target T. . The information obtained by the ESM2 is information on target radio wave specifications (frequency, pulse repetition rate, pulse width, rough radio wave arrival direction, etc.), and the fire control radar 1
The information obtained in is accurate radio wave arrival direction information, distance,
Velocity, reflection area, etc.
M / fire control radar correlator 10 performs integrated calculation and obtains information such as target T frequency, pulse repetition rate, pulse width, highly accurate azimuth, velocity, and reflection area. Identify whether it is a missile or a regular aircraft. Therefore, the discrimination ability of the target T can be improved.

Ninth Embodiment As shown in FIG.
Instead of the firearms control radar 1 and the ESM / firearms control radar correlator 10 shown in FIG. 2, an IRST 5 and an ESM / IRST correlator 11 that replaces the direction information of the ESM 2 with the information of the IRST 5 are configured. As in the case of the eighth embodiment, it is possible to improve the discrimination ability of the target T. As described above, the azimuth information obtained by the ESM2 has a poor resolution of about a few deg, and when the target T exists at a distance, for example, even if the ESM2 receives radio waves at two different frequencies, one target T is It is not possible to determine whether different frequencies are transmitting at two different frequencies, or two different targets T are transmitting at two different frequencies, respectively. However, in this Embodiment 9, I
When only one target T can be detected by RST5, it is highly possible that the former, that is, one target T changes the frequency and transmits at two different frequencies.
If two target Ts are detected in RST5, the latter,
That is, there is a high probability that the two targets T are respectively transmitting at two different frequencies. Therefore, the discrimination ability of the target T can be improved.

Embodiment 10. As shown in FIG. 11, instead of the firearms control radar 1 and the ESM / firearms control radar correlator 10 shown in FIG. 9, ESM in which the direction information of RF MWS6 and ESM2 is replaced with the direction information of RF MWS6
/ RF MWS correlator 12 is used instead. The RF MWS 6 as a fire control device is functionally the same as the fire control radar 1 (detects echoes that radiate radio waves and reflects), and the obtained azimuth information has the same resolution as that of the fire control radar 1. Since it is high, the discrimination ability of the target T can be improved as in the eighth embodiment.

Eleventh Embodiment As shown in FIG. 12, the ESM / IRST correlator 11 is added to the configuration of the fourth embodiment shown in FIG. Similar to the ninth embodiment, the effect of improving the discrimination ability of the target T can be obtained.

Twelfth Embodiment As shown in FIG. 13, ESM information and EO MWS are added to the fifth embodiment shown in FIG.
Correlation of information is taken and coarse direction information of ESM2 is EOM
ESM / EO to replace with highly accurate direction information of WS8
This is configured by adding an MWS correlator 13. As in the case of the eighth embodiment, it is possible to improve the discrimination ability of the target T.

Thirteenth Embodiment As shown in FIG. 14, RF
A missile jamming beam control that directs the jamming beam of the ECM14 to the radio wave arrival direction of the threat missile based on the missile direction information output from the RF MWS6 as a fire control device to the detection devices of the MWS6, the ESM2, the control device 4, and the ECM14. The container 15 is added. In the conventional configuration including only the ESM2 and the ECM14, the jamming radio waves can be transmitted to the radar of the threat target T. In this case, however, as shown in FIG. By pointing only in the direction of arrival,
The jamming beam can be transmitted to the missile seeker, so that the detection from the missile M can be disturbed and the jamming performance can be improved. The missile azimuth information is information indicating from which azimuth the missile M arrives with respect to the own aircraft 50 as described above, and is generally expressed with respect to the axis of the own aircraft 50. Other missile detection information includes speed, distance, reflection area, and the like.

Fourteenth Embodiment As shown in FIG.
The RF MWS 6 of No. 4 is replaced with the EO MWS 8. As in the thirteenth embodiment, the effect of improving the jamming performance can be obtained.

Fifteenth Embodiment As shown in FIG. 17, the ESM / RF is different from that of the thirteenth embodiment shown in FIG.
After adding the MWS correlator 12 to improve the discriminating ability,
Distance R to target T and RF obtained with RF MWS6
The effective reflection area σ of the target T is calculated from the reception power P _{S of the} MWS 6, the transmission wavelength λ, the antenna gain G, and the transmission output P _t , and the aircraft and the missile are determined from the calculated size. According to this, the interference beam can be reliably directed to a missile having a smaller effective radiation area σ than that of an aircraft. The relationship between σ and R, P _S , λ, G, P _t is given by the following equation. σ = (P _S · (4π) ³ · R ⁴ ) / (P _t · G ² ·
λ ² )

Sixteenth Embodiment As shown in FIG. 18, in addition to the general configuration of ESM2 and ECM14, ESM2
Received power P _S of the target and effective radiation power of the target T (Effect
Estimated value ER of iv Radiated Power)
The distance calculator 17 for calculating the distance to the target T from P _estimation and wavelength of the received radio wave λ added, further, calculates the distance to the target T in this distance calculator 17, the effective of ECM14 according to the distance This is configured by adding an ERP control device 16 that controls the radiated power and irradiates the target T with an interference radio wave. Conventionally, the effective radiation power of the ECM 14 is constant regardless of the state of the target T or the missile M. in this case,
As shown in FIG. 19, the effective radiation power according to the distance of the target T
The ERP controller 16 controls the opening area of the ECM 14, the transmitter output, etc. (if the target T is located far away, the effective radiation power is small, and if the target T is nearby, the effective radiation power is large). Thus, the target T or the missile M can be irradiated with the beam B of the interfering radio wave with the optimum effective radiation power. According to this
It is possible to reduce the probability that the jamming radio wave of the own device 50 is not transmitted to a far distance unnecessarily and to be detected by a radar other than the target T, or to effectively use the power (distribute the remaining power to another target T Can be sent). In addition,
The relationship between R and the ERP _guess , P _S , and λ is as follows. R = λ / 4π · √ ( ERP _estimation / _P S)

Seventeenth Embodiment As shown in FIG.
Instead of the distance calculator 17 of 8, the distance from the aircraft 50 to the target T is directly measured by the firearms control radar 1, and based on the distance information, the ERP controller 16 sets the effective radiation power of the ECM 14 to the target T. It is configured to control according to the distance. Similar to the sixteenth embodiment, the target T
The probability of being detected by a radar other than the above can be reduced, or the electric power can be effectively used.

Eighteenth Embodiment As shown in FIG.
The fire control traffic radar 1 of No. 0 is replaced with the RF MWS 6, and the missile jamming beam controller 15 is added. Similar to the sixteenth embodiment, it is possible to reduce the probability of being detected by a radar other than the target T, or to effectively use electric power.

Nineteenth Embodiment As shown in FIG. 22, the area limitation control device 3 is added to the configuration of FIG. Similar to the seventeenth embodiment, the probability of being detected by a radar other than the target T can be reduced, or the electric power can be effectively used. In addition, the detection distance of the fire control radar 1 increases, and It becomes possible to detect the target T.

Embodiment 20. As shown in FIG. 23, the fire control radar 1 of FIG. 22 is replaced with RF MWS6,
This is configured by adding a coverage limitation control device 3. Similar to the nineteenth embodiment, the probability of being detected by a radar other than the target T can be reduced, or the electric power can be effectively used, and the detection distance of the fire control radar 1 is increased, so that the target T at a distant position is increased. It becomes possible to detect.

In this way, the fire control radar 1, IRST 5, RF based on the radio wave arrival direction information from the ESM 2
By limiting the search range of various sensors of the MWS 6 and the EO MWS 8 and increasing the number of times of detection of the target T, it becomes possible to increase the detection distance of the sensor. In addition, from ISM5 direction information and INS9 machine body information, IRST5, RF
By reducing the threshold of MWS6, EO MWS8, IRST5, RF MWS6, EO
It is possible to increase the detection distance of the MWS8. Also,
In addition to general ESM information, by using distance information from fire control radar 1 etc. and missile direction information of RFMWS6 and EO MWS8, only target T and missiles are not irradiated with undesired radio waves over an unnecessarily long distance. The jamming radio waves can be reliably emitted, and the ECM 14 can be effectively jammed. Further, although the present invention has been described with respect to the case where the search device is mounted on the aircraft, the present invention is not limited to this, and a mobile station such as a ship or a vehicle, or another station such as a fixed station fixed on the ground. However, the present invention can be applied.

[0058]

[0059]

[0060]

[0061]

[0062]

As described above, according to the first aspect of the present invention, E which detects a fire control radar as a threat target is provided.
The IRST based on the SM, the IRST that optically detects the threat target, and the radio wave arrival direction information of the ESM.
The search range is limited to the direction of arrival of radio waves, and the threshold control device is installed to lower the threshold of this search range and increase the detection sensitivity.
Can detect distant targets.

According to the second aspect of the invention, based on the ESM for detecting the fire control radar of the threat target, the EO MWS for optically detecting the threat missile, and the radio wave arrival direction information of the ESM. Since the search coverage of the EO MWS is limited to the direction of arrival of the radio wave and the threshold control device for reducing the threshold of the search coverage and increasing the detection sensitivity is provided, the detection distance is equivalently increased, and the target at a distance is increased. Can be detected.

According to the third aspect of the present invention, the ESM for detecting a fire control radar as a threat target, the INS for recognizing the position and attitude of the aircraft itself, and the threat target are optically detected. Based on the IRST and the information output from the INS, the directions of the sun and the ground, which are the main background noises of the IRST, are calculated, the search coverage area is limited to other directions, and the threshold of the search coverage area is determined. Since the threshold control calculation device for reducing the detection sensitivity and increasing the detection sensitivity is provided, the detection distance is equivalently increased, and a distant target can be detected.

According to the invention described in claim 4 , the ESM for detecting the fire control radar as a threat target, the INS for recognizing the position and attitude of the aircraft itself, and the threat missile are optically detected. Based on the information output from the INS and the EO MWS or IR MWS, the EO
A threshold control calculation device that calculates the direction of the sun and the ground, which are the main background noises of MWS or IR MWS, limits the search coverage to other directions and lowers the threshold of this search coverage to increase detection sensitivity. Since it is provided, the detection distance is equivalently increased and a distant target can be detected.

According to the fifth aspect of the present invention, based on the ESM for detecting the fire control radar of the threat target, the fire control radar for detecting the threat target by radio waves, and the radio wave arrival direction information of the ESM. , A coverage limitation control device for limiting the search coverage of the fire control radar to the arrival direction of the radio wave and controlling the detection of the fire control radar with priority, and the direction of the ESM from the output information of the ESM and the fire control radar Since ESM / fire control radar correlator that replaces information with direction information of fire control radar and also adds distance information,
The ability to identify a target can be improved.

According to the sixth aspect of the invention, based on the ESM for detecting the fire control radar of the threat target, the IRST for optically detecting the threat target, and the radio wave arrival direction information of the ESM, The coverage limitation control device that restricts the search coverage area of the IRST to the radio wave arrival direction and controls scanning and tracking intensively, and replaces the direction information of the ESM with the direction information of the IRST based on the output information of the ESM and IRST. Since the ESM / IRST correlator is provided, the ability of discriminating the target can be enhanced.

Further, according to the invention described in claim 7 , based on the ESM for detecting the fire control radar of the threat target, the RF MWS for detecting the threat missile by the radio wave, and the radio wave arrival direction information of the ESM, A coverage limitation control device for limiting the detection coverage of the RF MWS only to the arrival direction of the radio wave and controlling the detection of the threat missile, and the ESM and R
RF ESM direction information from the output information with FMWS
Since the ESM / RF MWS correlator that replaces the azimuth information of the MWS and also adds the distance information is provided, it is possible to enhance the target identification ability.

Further, according to the invention described in claim 8 , based on the ESM for detecting the fire control radar as a threat target, the IRST for optically detecting the threat target, and the radio wave arrival direction information of the ESM, A threshold control device that limits the search coverage of the IRST to the direction of arrival of the radio wave and lowers the threshold of the search coverage to increase detection sensitivity,
ESM / IRST which replaces the ESM direction information with the IRST direction information based on the output information of the ESM and IRST
Since the correlator is provided, the ability to discriminate the target can be enhanced.

Further, according to the invention described in claim 9 , based on the ESM for detecting the fire control radar of the threat target, the EO MWS for optically detecting the threat missile, and the radio wave arrival direction information of the ESM. , A threshold control device that limits the search coverage of the EO MWS to the arrival direction of the radio wave and lowers the threshold of the search coverage to increase detection sensitivity; and the output information of the ESM and the EO MWS provides the ESM direction information. Since the ESM / EO MWS correlator that replaces the EO MWS azimuth information is provided, it is possible to enhance the target identification capability.

[0071]

[0072]

[0073]

According to the invention described in claim 10 ,
ESM that detects a fire control radar that is a threat target, RF MWS that detects a threat missile multiple times by radio waves, and E above.
ESM / RF which replaces the ESM direction information with the RF MWS direction information from the output information of SM and RF MWS
MWS correlator and ECM for radio interference with threat targets
And, based on the missile detection information of the RF MWS, a missile jamming beam controller for directing the jamming beam of the ECM is provided in the radio wave arrival direction of the threat missile. Therefore, for a missile having a smaller effective radiation area than an aircraft. The interference beam can be reliably directed.

[0075]

[0076]

[0077]

[0078]

[0079]

[0080]

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a detection device according to a first embodiment of the present invention.

FIG. 2 is a plan view illustrating a detection method of the detection device according to the first exemplary embodiment.

FIG. 3 is a block diagram showing a configuration of a detection device according to a second embodiment.

FIG. 4 is a block diagram showing a configuration of a detection device according to a third embodiment.

FIG. 5 is a block diagram showing a configuration of a detection device according to a fourth embodiment.

FIG. 6 is a block diagram showing a configuration of a detection device according to a fifth embodiment.

FIG. 7 is a block diagram showing a configuration of a detection device according to a sixth embodiment.

FIG. 8 is a block diagram showing a configuration of a detection device according to a seventh embodiment.

FIG. 9 is a block diagram showing a configuration of a detection device according to an eighth embodiment.

FIG. 10 is a block diagram showing a configuration of a detection device according to a ninth embodiment.

FIG. 11 is a block diagram showing a configuration of a detection device according to a tenth embodiment.

FIG. 12 is a block diagram showing a configuration of a detection device according to an eleventh embodiment.

FIG. 13 is a block diagram showing a configuration of a detection device according to a twelfth embodiment.

FIG. 14 is a block diagram showing a configuration of a detection device according to a thirteenth embodiment.

FIG. 15 is a plan view illustrating a detection method of a detection device according to a thirteenth embodiment.

FIG. 16 is a block diagram showing a configuration of a detection device according to a fourteenth embodiment.

FIG. 17 is a block diagram showing a configuration of a detection device according to a fifteenth embodiment.

FIG. 18 is a block diagram showing a configuration of a detection device according to a sixteenth embodiment.

FIG. 19 is a plan view illustrating a detection method of the detection device according to the sixteenth embodiment.

FIG. 20 is a block diagram showing a configuration of a detection device according to a seventeenth embodiment.

FIG. 21 is a block diagram showing the configuration of a detection device according to an eighteenth embodiment.

FIG. 22 is a block diagram showing the configuration of the detection device according to the nineteenth embodiment.

FIG. 23 is a block diagram showing the configuration of the detection device according to the twentieth embodiment.

FIG. 24 is a block diagram showing a configuration of a conventional detection device.

FIG. 25 is a plan view showing a detection method of a conventional detection device.

[Explanation of symbols]

1 fire control radar, 2 ESM, 3 limited coverage control device, 4 control device, 5 IRST, 6 RF MWS,
7 Threshold control device, 8 EO MWS, 9
INS, 14 ECM, 15 missile jamming beam controller, 16 ERP controller, 17 range calculator, 50
Own machine, T target.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-60-162200 (JP, A) JP-A-8-211146 (JP, A) JP-A-9-288169 (JP, A) JP-A-8- 75843 (JP, A) JP-A-9-270772 (JP, A) JP-A-10-288662 (JP, A) JP-A-7-172396 (JP, A) JP-A-7-4894 (JP, A) JP-A-8-248117 (JP, A) JP-A-9-101360 (JP, A) JP-A-2-143184 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01S 7/00-7/40 G01S 13/00-13/95 F41H 11/02

Claims (10)

(57) [Claims] 1. An E for detecting a fire control radar as a threat target.
The IRST based on the SM, the IRST that optically detects the threat target, and the radio wave arrival direction information of the ESM.
The detection device is provided with a threshold control device which limits the search coverage area of the radio wave to the direction of arrival of radio waves and lowers the threshold of the search coverage area to enhance detection sensitivity. 2. E for detecting a fire control radar as a threat target
SM and EO MWS to optically detect threat missiles
And a threshold control device for limiting the search coverage of the EO MWS to the arrival azimuth of the radio wave on the basis of the information on the arrival azimuth of the ESM, and lowering the threshold of the search coverage to enhance the detection sensitivity. Detection device. 3. E for detecting a fire control radar as a threat target
SM and INS that recognizes the position and attitude of the aircraft
And IRST that optically detects the threat target, and the above IN
Based on the information output from S, the direction of the sun and the ground, which are the main background noises of the IRST, is calculated, the search coverage area is limited to other directions, and the threshold of this search coverage area is lowered to detect. A detection device having a threshold control calculation device for increasing sensitivity. 4. E for detecting a fire control radar as a threat target
SM and INS that recognizes the position and attitude of the aircraft
Based on the information output from EO MWS or IR MWS that optically detects a threat missile and the INS, the direction of the sun and the ground, which are the main background noises of the EO MWS or IR MWS, is calculated. A detection device comprising a threshold control calculation device which limits a search coverage area to other directions and lowers a threshold of the search coverage area to enhance detection sensitivity. 5. E for detecting a fire control radar as a threat target
SM and fire control radar that detects threat targets by radio waves,
Based on the radio wave arrival direction information of the ESM, the coverage limitation control device that restricts the search coverage of the fire control radar to the radio wave arrival direction and controls the detection of the fire control radar, and the ESM and the firearm ES from the output information with the control radar
Replace the direction information of M with the direction information of the fire control radar,
Further, the detection device is provided with an ESM / fire control radar correlator that also adds distance information. 6. E for detecting a fire control radar as a threat target
The IRST based on the SM, the IRST that optically detects the threat target, and the radio wave arrival direction information of the ESM.
Coverage limitation control device that controls scanning and tracking by limiting the search coverage area to the radio wave arrival direction, and the above ESM and IRS
A detection apparatus, characterized in that an ESM / IRST correlator that replaces ESM direction information with IRST direction information based on output information from T is provided. 7. E for detecting a fire control radar as a threat target
SM and RF MWS to detect threat missiles by radio waves
And, based on the radio wave arrival direction information of the ESM, the coverage limitation control device for limiting the search coverage of the RF MWS to the radio wave arrival direction and controlling the detection of the threat missile, and the ESM and RF. ESM from output information with MWS
The detection device is provided with an ESM / RF MWS correlator that replaces the azimuth information of the azimuth information with the azimuth information of the RF MWS and further adds distance information. 8. An E for detecting a fire control radar as a threat target
The IRST based on the SM, the IRST that optically detects the threat target, and the radio wave arrival direction information of the ESM.
The threshold control device that limits the search coverage area to the radio wave arrival direction and lowers the threshold of the search coverage area to increase the detection sensitivity, and the output information of the ESM and IRST described above converts the ESM direction information to the IRST direction information. A detection device having an ESM / IRST correlator to be replaced. 9. An E for detecting a fire control radar as a threat target.
SM and EO MWS to optically detect threat missiles
And a threshold control device for limiting the search coverage of the EO MWS to the arrival azimuth of the radio wave on the basis of the radio wave arrival direction information of the ESM, and lowering the threshold of the search coverage area to enhance the detection sensitivity, and the ESM. EO MW
A detection device, characterized in that an ESM / EO MWS correlator that replaces the ESM direction information with the EO MWS direction information from the output information of S is provided. 10. An ESM for detecting a fire control radar as a threat target and an RF for detecting a threat missile a plurality of times by radio waves.
MWS, ESM / RF MWS correlator that replaces ESM heading information with RF MWS heading information from output information of ESM and RF MWS, ECM that radio wave interferes with a threat target, and RF MWS missile detection Based on the information, the above E
A detection device comprising a missile jamming beam controller for directing a jamming beam of CM.