JPH06100438B2 - Effectiveness calculation circuit - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an effectiveness calculation circuit, and more particularly, an effectiveness calculation circuit that prevents firearm allocation to a target that cannot be fired in a firearm allocation device and effectively calculates effectiveness. Regarding

[Conventional technology]

For aircraft or ships that have invaded the airspace or waters,
When attacking or intimidating these targets as a last resort, the commander specifies the target to attack for each allied firearm and commands this information to the firearms department. This is called firearm allocation, and as shown in FIG. 2, the procedure includes target information including the position and speed of the target by the radar sensor system 33 and the like, and firearm information including the position and range of the firearm system 34. First, the effectiveness calculation circuit 31 obtains the effectiveness of the firearm's shooting against the target for each combination of the target and the firearm, and the result is comprehensively judged by the target / firearm combination circuit 32 (for example, the effectiveness The combination of the firearm and the target is determined by making a combination that maximizes the total sum of degrees, and the contents are displayed and monitored by the display system 35 and transmitted to the firearm system 36.

Heretofore, the effectiveness has been calculated from the position of the firearm, the position of the target, and the speed without considering the range of the firearm or the range in which the fire can be taken. That is, as shown in FIG. 5, the effectiveness M _O is the velocity of the target T, V _T , the distance between the target T and the firearm F, R _T , and the angle between the traveling direction of the target T and the firearm F seen from the target, θ. _{Let T} be expressed as in equation (1).

_{M O = M O (V T} , R T, θ T) ...... (1) In this case, usually a function of the positive value that decreases with respect to M _O is increased with respect to V _T R _T and theta _T. In this way, the conventional effectiveness calculation method does not consider the range of firearms and the range in which it can be fired, so firearms can be assigned to targets that cannot actually be fired (effectiveness of a certain value is calculated). Could have been done. Also, for targets that may be fired, when the target T travels along the dotted line in FIG. 5, the distance R _T between the target T and the firearm F becomes smaller, but the target T
The angle θ _T between the traveling direction of the firearm and the firearm F as seen from the target becomes large, and the effectiveness M _T is R _T
Decreases with respect to increased theta _T with respect to the target T and firearms F and the effectiveness M _O In close occurs a phenomenon such as out of the common sense that inevitably large, effectiveness effectively change There was something I didn't do.

Further, as shown in FIG. 6, an example of the configuration of the conventional technique is as follows: the target information storage unit 41, the firearm information storage unit 42, and the θ _T calculation unit 43.
An R _T calculation unit 44, a V _T calculation unit 45, an effectiveness calculation unit 46,
The effectiveness buffer 47 is provided. The target information signal 141 indicating the position, speed and number of the target T is temporarily stored in the target information storage unit 41, and the firearm information signal 142 indicating the position and number of the firearm F is also temporarily stored in the firearm information storage unit 42. Once for each combination of the memory signal number of number and firearms F target T predetermined to calculate the angle theta _T with firearms F as viewed from the traveling direction and the target of the target T theta _T calculator 43
And the R _T calculation unit 44 that calculates the distance R _T between the target T and the firearm F, and the θ _T signal and the R _T signal are output from each and input to the effectiveness calculation unit 46. Further, the speed signal of each target T number from the target information storage unit 41 is input to the V _T calculation unit, and the speed V _{T of the} target _T is calculated for each firearm F number and input to the effectiveness calculation unit 46. In the effectiveness calculation unit 46, a signal indicating the effectiveness M _O as a result of performing the calculation of the formula (1) for each combination of the target T and the firearm F is output as an effectiveness signal 143 through the effectiveness buffer 47. .

The effectiveness was calculated as described above.

[Problems to be solved by the invention]

The problem to be solved by the present invention is, as described above, to a target that cannot be fired because the effectiveness is calculated from the position of the firearm, the position of the target, and the speed without considering the range of the firearm or the range in which the fire can be performed. On the other hand, firearms are assigned and effective effectiveness cannot be calculated for targets that may be fired.

Therefore, it is an object of the present invention to provide an effectiveness calculation circuit that solves the above-mentioned drawbacks.

[Means for solving problems]

The effectiveness calculation circuit of the present invention includes a target information signal including a position and speed of a target such as a flight target, a ground target or a water target, which is obtained by a sensor such as a radar, and a firearm information signal including a position and a range of a firearm. In the effectiveness calculation circuit for inputting, and outputting an effectiveness signal indicating the effectiveness of shooting against the target of the firearm, when the predicted passage of the target is out of the range of the firearm, and the target is the range of the firearm. The effectiveness is set to zero when either one of the following cases is satisfied: after passing through the corresponding point on the departure side that can be destroyed by the projectile fired from the firearm at the departure point departing from the range. It outputs a zero effectiveness signal and satisfies both the case where the predicted passage of the target passes through the range of the firearm and the case where the target exists before passing through the launch corresponding point on the departure side. For each combination of the target and the firearm that is determined to be fireable, the target can be destroyed by a projectile fired from the firearm at the entry point where the target enters the range of the firearm. Shooting possibility determination means that outputs an intermediate information signal indicating a shooting waiting time to reach a point and the target is a shooting possible time to progress between the launch corresponding point on the entry side and the launch corresponding point on the leaving side, The intermediate information signal and the zero effectiveness signal are input, and if there is the zero effectiveness signal for each combination of the target and the firearm, the effectiveness signal indicating zero effectiveness is output, and the zero effectiveness signal is output. When there is not, there is a validity calculating means for outputting a validity signal represented by a function of a positive value that decreases with respect to the shooting waiting time and increases with respect to the possible firing time.

〔Example〕

Next, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing an example of a configuration of a firearm allocation device showing the background of the present invention, and FIG. 3 is a diagram showing an embodiment of the present invention. FIG. 4 is a flowchart showing the operation, and FIG. 4 is an explanatory view showing the background of the principle of the present invention.

(A) Outline of principle First, an outline of the principle of the present invention will be described with reference to FIG.

The effectiveness calculation circuit of the present invention calculates the effectiveness according to the capability of the firearm, such as the range of the firearm, the range in which the target can be fired. Therefore, the possibility of shooting a firearm against the target is determined based on the target information and the firearm information, and the effectiveness is set to 0 when there is no possibility as a result of the determination. When there is a possibility, the effectiveness is calculated based on the time for the target to pass the range in which the firearm can fire, the range of the firearm, and the time for the target to reach the range in which the firearm can fire.

As this procedure, first, the determination of the shooting possibility will be described.
In the first judgment, whether or not the predicted course of the target (assumed to be a straight line) obtained from the position and speed of the target (passing the maximum range distance centered on the position of the firearm and the radius) passes through the range of the firearm. If it does not pass, it is determined that there is no possibility of shooting. In the second judgment, it is judged whether or not the target has passed the range of the firearm and is out of the fireable range of the firearm considering the speed of the projectile fired from the firearm and the target speed, If so, it is determined that there is no possibility of shooting. Further, when the firearm is equipped with a radar, the first and second determinations are performed as the third determination in advance, and the distance between the target T and the firearm F is the capture range of the firearm radar (generally a circle centered on the firearm. (Represented by) is determined to be inside, and if it is not inside, it is determined that there is no possibility of shooting.

Next, details of the shooting possibility determination will be described with reference to FIG.
When the firearm F having the maximum range R _F and the range J is on the Cartesian coordinates (the polar coordinates may be assumed to be Cartesian coordinates for explanation), the target T is the velocity V _T (X, Y of V _T ). component
_It is assumed that the predicted course E (assuming a straight line) is traveling at _{T 1} , _{T 2} .

When the target T reaches the launch corresponding point C on the entry side, if the projectiles such as missiles and shells are launched from the firearm F toward the entry point A, both the target T and the projectiles launched from the firearm F also enter at the same time. The target velocity V _T and the velocity V _{F of the} projectile so that point A is reached
The launch corresponding point C is obtained from. Target T of the velocity V _T In this way
After confirming that has reached the launch corresponding point C, the target T can be defeated at the entry point A by launching a projectile with a velocity V _F from the firearm F. That is, when the target T rushes in, it can be destroyed with the maximum range R _F of the firearm F. Similarly, if the launch corresponding point D on the departure side is obtained, the target T is the maximum range distance R _{F of the} firearm _F.
You can see that you can defeat it at the exit point B of. Therefore, the time required for the target T to move from the current position to the firing corresponding point C is a margin time until the start of shooting, that is, the shooting waiting time T _R , and the time for moving between the firing corresponding points C and D is The firing time is T _P.

Next, details of the first to third determination methods will be described.

First, if the target T position is (x _T , y _T ), its velocity is ( _T , _T ), and the firearm position is (x _F , y _F ), the first determination method is assumed to be a straight-line motion. Set the target T and the predicted course E (x,
When expressed by y), it becomes as shown in equation (2).

_{(Y-y T) = (} T / T) (x-x T) ...... (2) The position representing the range range J (x, y) is the position of the firearm F into the circularly x _F, and y _F , And the maximum range is R ₁ , it is expressed by equation (3).

(X−x _F ) ² + (y−y _F ) ² = R _F ² (3) Here, by solving equations (2) and (3) as simultaneous equations, if there is a solution, the inrush point A and The departure point B is determined and it is determined that there is a possibility of shooting. If there is no solution, the predicted course E does not pass through the range J of the firearm, so it is determined that there is no possibility of firing.

In the second determination method, the launch corresponding points C and D are obtained and the presence or absence of the target T is determined during this period. First, the entry point A and the departure point B are obtained. For this, the simultaneous equations (2) and (3) are solved, and the solutions are (x ₁ , y ₁ ) and (x ₂ , y ₂ ), the inrush point A (x _A , y _A ) and the departure Point B (x _B , y _B )
Is as in equation (4).

Next, the time required for the target T to reach the plunge point A from the firing corresponding point C at the velocity V _T , and the time required for the projectile fired from the firearm F at the velocity V _F to reach the plunge point A. Letting and be equal, the launch corresponding point C (x _C , y _C ) is obtained.
Further, the launch corresponding point D (x _D , y _D ) is similarly obtained, and these results are shown in the equation (5).

However, since the launch corresponding points C and D are on the predicted course E through which the target T passes, the determination as to whether or not the target T has left the firing range (that is, between the launch corresponding points C and D) is This is performed according to the equation (6).

As a result of the determination according to the equation (6), it is determined that there is a possibility of shooting if it has not left the firing corresponding point D, and that there is no possibility of firing when it has left the firing corresponding point D.

The third determination method calculates the distance R between the target T and the firearm F (see the equation (7)), and compares it with the maximum capture distance R _S of the firearm radar. Therefore, when R _T ≤R _S , it is determined that there is a possibility of firing within the capture range, and when R _T > R _S , it is determined that there is no fire outside the capture range.

Next, the calculation of the effectiveness will be described. As shown in FIG. 4, when there is a shooting possibility as a result of the above-described determination of the shooting possibility, the time during which the target moves between the firing corresponding points C and D, that is, the firing range of the firearm (shooting time T _P ). And the time required for the target to move from the current position to the firing point C (shooting waiting time
Calculate the effectiveness based on T _R ).

The effectiveness M of the effectiveness calculation circuit of the present invention is calculated by
If it is T _P , it is expressed by equation (8).

M = M (T _P , T _R ) (8) The effectiveness M is a function of a positive value that increases with respect to the possible firing time T _{P and} decreases with respect to the firing waiting time T _R. Also,
An example of the calculation formula showing the effectiveness M is shown in Formula (9). In this equation (9), the coefficients α and β can be adjusted to match the conditions of the firearm and the target, and T _RMax is the maximum possible shooting waiting time for the detected target.

M = αT _P + β [T _RMax −T _R …… (9) The reason is that if the firing time T _P is long, the number of firearms F can be fired repeatedly, so it can be fired repeatedly. Since the effectiveness of the target increases and the target situation fluctuates when the shooting waiting time T _R is long, it is necessary to track these, and when there are multiple targets, it is possible to allocate the firing of the firearm F from the target close to them. This is because it is necessary to reduce the effectiveness because it is possible.

The time T _P that can be fired differs depending on whether the target T is before or after passing through the launch corresponding point C on the entry side, as shown in equation (10).

The shooting waiting time T _R is the same as the shooting time T _P (11)
It becomes like a formula.

The determination before and after the target passes through the launch-corresponding passing point C is made by the equation (12).

(A) Configuration and Operation of Embodiment Next, an embodiment of the present invention will be described with reference to FIG. 1 focusing on the configuration and operation thereof. Referring to FIG. 1, one embodiment of the present invention includes a shooting possibility determination means 1 and an effectiveness calculation means 2.

The shooting possibility determination means 1 includes a target information storage unit 11, a firearm information storage unit 12, a shooting possibility determination unit 13, and a T _P / T _R calculation unit 14. The target information storage unit 11 includes a target information signal including at least one target position / speed / number existing in a preset range that is periodically input from a radar or the like.
Input and store 100, and the stored target information is the target information signal 1
It outputs as 1 target one by one. The target information stored in the target information storage unit 11 is updated every period when the target information is input. The firearm information storage unit 12 inputs and stores a firearm information signal 101 including the position, range, and number of at least one firearm existing within a preset range,
The stored firearm information is sequentially output as a firearm information signal 112 one by one. The firearm information stored in the firearm information storage unit 12 is updated every time the condition of the firearm changes.

In the shooting possibility determination unit 13 to which the target information signal 111 and the firearms information signal 112 are input, the first judgment and the second judgment regarding the firing possibility described above for each combination of the firearm and the target are performed, and When the firearm is equipped with radar, the third judgment is performed prior to these judgments, and if at least one judgment shows that there is no possibility of firing, the effectiveness of the firearm is set to 0. A zero effectiveness signal 104 is output. If all decisions result in a possible fire, then the target firearm information signal for that firearm / target combination 11
3 is output to the T _P / T _R calculation unit 14. T _P · T _R calculation unit 14 target weapon information signal 113 is input to each combination of the firearm and the target
Then, the possible firing time T _P and the firing waiting time T _R are calculated for each combination of the target and the firearm, and these are calculated.
Is output. The effectiveness calculator 2 includes an effectiveness calculator 21 and an effectiveness buffer 22. In the effectiveness calculation unit 21,
The intermediate information signal 102 consisting of the possible firing time T _P and the shooting waiting time T _R is input for each combination of the target and the firearm, and the processing of the formula (8) or (9) described above is performed to determine the target and the firearm. Effectiveness is sequentially calculated for each combination of, and the effectiveness signal 121 is output to the effectiveness buffer unit 22. In the effectiveness buffer unit 22, the effectiveness signal 121 and the effectiveness zero signal 104 are input, and the effectiveness for each combination of the target and the firearm is stored in correspondence with the numbers of the target and the firearm, and all the targets and the firearm are stored. The effectiveness signal 103 for the combination with and is collectively output.

Next, the operation of the embodiment of the present invention will be described for each constituent block with reference to the flowchart of FIG. First, the target information signal 100 is input to the target information storage unit 11, and the position and speed of each target are stored (step). Further, the firearm information signal 101 is input to the firearm information storage unit 12, and the position and the range are stored for each target (step).

The shooting possibility determination unit 13 sequentially calls the target information and the firearm information from the target information storage unit 11 and the firearm information storage unit 12 for each combination of the target and the firearm (step). And
Examine the presence or absence of a radar to be used for aiming a firearm or to search for a target (step), if there is a radar, make a third determination (step), and if there is no possibility of shooting in the result (step), select this target. The effectiveness of the combination of and firearms is set to 0 (step). Next, when there is no firearm radar (step and when there is a possibility of shooting by the third judgment (step) (step), the first judgment is made (step). When there is no possibility of shooting in the result) (Step), the effectiveness of the combination of the target and the firearm is set to 0 (Step), and if there is a possibility of shooting by the first determination (Step), the second determination is performed (Step). If the result shows that there is no fire possibility (step), the effectiveness of the combination of this target with the firearm is set to 0 (step), and if there is a fire possibility (step), the combination of this target with the firearm The target firearm information signal 113 is output to the T _P / T _R calculation unit 14.
When the effectiveness of the combination of the target and the firearm is set to 0 by the step, the effectiveness zero signal 104 is output to the effectiveness buffer 22.

The target firearm information signal 113 for each combination of target and firearm is input, and the T _P / T _R calculation unit 14 calculates the possible firing time T _P and the firing waiting time T _R for each combination of target and firearm ( Step), and outputs the result as the intermediate information signal 102 to the effectiveness calculation unit 21. Effectiveness signal 121 including the effectiveness M (step) numbered and calculated for each combination of target and firearm from the intermediate information signal 102 input in the effectiveness calculator 21, and the target and firearm obtained from the step Of the zero-effectiveness signals 104 numbered for each combination of and, any one of them is stored in the effectiveness buffer 22 and the effectiveness signal 103 arranged for each combination of the target and the firearm is output ( Step).

In addition, the operation of the steps of the flow chart is in the target information storage unit 11, and the operation of the steps is in the firearm information storage unit
12, the operation of steps ~ to the shooting possibility determination unit 13,
Each step operation of ... is T _P, T _R computing section 14,
It corresponds to the effectiveness calculator 21 and the effectiveness buffer 22. Therefore, the computer system configured by connecting the data input / output interface, the program memory, the data memory, the computer unit, and the like with the data bus has the configuration of this embodiment (the target information storage unit 11, the firearm information storage unit 12, the fire possibility). Judgment part
13, T _P , T _R calculation unit 14, effectiveness calculation unit 21, effectiveness buffer
It may be applied to all or part of 22) at once.

〔The invention's effect〕

As described in detail above, the effectiveness calculation circuit of the present invention is
The fire possibility of the firearm is determined based on the firearm's range of fire, which takes into consideration the range of the firearm, the speed of the projectiles fired from the firearm, and the target speed of progress, and if there is no possibility of fire, then the effectiveness is determined. Setting to 0 prevents firearms from being assigned to targets that do not have a fire possibility, and if there is a fire possibility, the effectiveness based on the time it takes for the target to pass the fire range and the time for the target to reach the fire range. By calculating, there is an effect that it is possible to calculate the effective degree without waste, which increases the chances of being able to shoot when the shooting time becomes long.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing an example of a configuration of a firearm allocation device showing the background of the present invention, and FIG. 3 is a diagram showing an embodiment of the present invention. FIG. 4 is a flowchart showing the operation, FIG. 4 is an explanatory view showing the principle of the operation of the present invention, FIG. 5 is an explanatory view of the effectiveness calculation by the conventional technique, and FIG. 6 is a block diagram showing an example of the configuration by the conventional technique. . 1 ... Shooting possibility determination means, 2 ... Effectiveness calculation means, 11
…… Target information storage unit, 12 …… Firearm information storage unit, 13 …… Shooting possibility determination unit, 14 …… T _P · T _R calculation unit, 21 …… Effectiveness calculation unit, 22 …… Effectiveness buffer.

Claims (2)

[Claims] Claims: 1. A target information signal including a position and velocity of a target obtained by a sensor, and a firearm information signal including a position and a range of a firearm are input, and an effectiveness degree indicating the effectiveness of shooting at a target of the firearm. In the effectiveness calculation circuit which outputs a signal, the target passage prediction line is out of the range of the firearm, and the target is defeated by a projectile fired from the firearm at a departure point away from the range of the firearm. After passing through the launch side corresponding point on the departure side that can be done, when any one of the following is satisfied, an efficacy zero signal that makes the efficacy zero is output, and the target passage prediction line is a firearm. The target and the firearm that are determined to be capable of being fired are satisfied when both the case of passing the range range and the case of the target existing before passing the launch corresponding point on the leaving side are satisfied. Combination of For each of the above, the shooting waiting time to reach the launch corresponding point on the entry side where the target can be destroyed by the projectile fired from the weapon at the entry point where the target enters the range of the firearm, and the target corresponds to the launch on the entry side Point and the shooting possibility determining means for outputting an intermediate information signal indicating a shooting possible time for moving between the launch side corresponding points, and the intermediate information signal and the effectiveness zero signal are inputted, and the target is inputted. If there is the zero effectiveness signal for each combination of the firearm and the effectiveness signal, an effectiveness signal indicating zero effectiveness is output, and when there is no zero effectiveness signal, the firing waiting time decreases and the firing possible time increases. And a validity calculating circuit for outputting a validity signal represented by a function of a positive value. 2. The radar of which the target position is the firearm, in addition to the condition of outputting the effectiveness zero signal even when the target position is not within the capture range of the sensor of the firearm, in the shooting possibility determination means The effectiveness calculation circuit according to claim 1, wherein the effectiveness calculation circuit is added to the condition for determining that there is a possibility of shooting even if it is in the capture range.