JPS5840500A - Calculator for prospective position - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is installed, for example, in a fire control device that controls a firearm so that a bullet hits a target.

This relates to a device that accurately predicts future positions.

A conventional device of this type is shown in FIG. In the figure, (1) is a radar for tracking the target, ``Cut'' is a current position signal, (3) is a tracking calculation device for calculating the direction and speed of the target, and (4) is a signal for the direction of movement of the target. , excellent) is a target speed signal, (6) is a shooting calculation device for calculating the future position, (7) is a future position signal, (8) is a firearm that fires a bullet toward the future position, and c control. is the current position after the target ga/projectile flight time, and U is the future position.

Next, the operation will be explained.By tracking the target with 11, the current position of the target can be obtained every moment.The obtained current position is the current position signal.
The zero tracking calculation device (3) is sent to the tracking calculation device (3) as
3) calculates the target movement direction and speed from the current position signal (2), and calculates the target movement direction (4) along with the current position signal (ri).
The shot calculation device (6) sends a speed signal (5) to the shot calculation device (6).The shot calculation device (6) fires a bullet from the firearm and the target position changes as the bullet reaches the target. Assuming that the target's motion direction and velocity remain the same, the target and bullet,
The future position is calculated and the future position signal (
Send it to firearms (8) as 7). The firearm (8) fires a bullet toward six future positions obtained from the firing calculation device (6).

A conventional fire control device is configured as described above.

Because the future position is predicted on the assumption that the target's motion direction and speed will change frequently during the bullet's flight time, the target (9
) changes the direction of motion by making a circular motion or the like, there is a gap between the current position a after the bullet flight time and the future position I, which has the disadvantage of reducing the bullet's hit rate. Figure 2 shows an example of a conventional fire control system with a defect that causes a difference between the current position trajectory and the future position trajectory. The number is the trajectory of the future position.

This invention was made to eliminate this drawback.
To provide a future position calculation device that can accurately and easily calculate the future position of a target moving in a circular motion or the like.

An embodiment of the present invention shown in FIG. 3 will be described below. In the figure, the bullet flight time signal.

The cod is a delay device that delays the future position by the bullet flight time in order to compare the current position and the future position after the bullet flight time, the fin is a delayed future position signal delayed by the bullet flight time, and aS is the delayed future position signal fiη. A future position error calculation device that subtracts the current position signal (11 is a future position error signal, (
2) is a future position error correction device that automatically corrects the future position signal (7) by adding the future position error signal 0, 01) is the corrected future position signal, a21 is the future position error, and (c) is the corrected future position. It is.

Next, the operation will be explained.0 By tracking the target with the radar (1), the current position of the target can be obtained from time to time.0 The obtained current position is the current position signal (21
It is sent to the tracking calculation device (3) as a. Tracking calculation device (
3) calculates the movement direction and speed of the target from the current position signal (21) and outputs the target movement direction signal (4) together with the current position signal (21).
) and speed signal (5) to the shot calculation device (6).The shot calculation device (6) fires the bullet from the firearm and the target position changes during the elapsed time until the bullet reaches the target. Assuming that the direction and velocity of the bullet do not change, the position where the target and the bullet meet, that is, the future position, is calculated and sent as a future position signal (7) to the delay device aS and the future position error correction device (To), and at the same time the bullet flight is calculated. A time signal is also sent to the delay device a. The delay device ae delays the future position signal (7) by the bullet flight time and uses it as a delayed future position signal fin to calculate the future position error calculation device 6g.
send to The intelligent tracking calculation device (3) receives the current position signal (2)
is also sent to the future position error calculation device axis. The future position error calculation device axis calculates a future position error by subtracting the current position signal from the delayed future position signal an, and sends it as a future position error signal 0 to the future position error correction device (support). The future position correction device (to) automatically adds the future position error signal tS to the future position signal (7), calculates a corrected future position, and sends it to the firearm (8) as a corrected future position signal. The firearm (8) fires a bullet toward the corrected future position (2) K that has been obtained. Because it is configured like this, the target (9) makes a circular motion etc. during the flight time of one bullet and changes the direction of movement. Even if the current position axis is reached by changing the axis, the corrected future position (to) can be calculated easily and accurately by adding the future position error (to) to the future position 111, and the firearm can be fired toward the corrected future position, so the bullet's It is possible to improve the hit rate.Although the above description has been made regarding the case where the target is tracked with a radar, this invention is not limited to this, and can be used when the target is tracked optically or with a laser. You can.

As described above, according to the present invention, the future position error can be corrected to the actual future position by changing the movement direction of the target, so there is an advantage that the corrected future position with high accuracy can be easily calculated. Figure 4 shows the current position. In Figure 0, which shows the trajectory, the trajectory of the future position, and the trajectory of the corrected future position according to the present invention, - is the trajectory of the corrected future position. Note that the trajectory of the current position■ and the trajectory of the corrected future position almost overlap, but for convenience of explanation, I have separated them to the extent that they can be distinguished.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the configuration of a conventional fire control device and the relationship between the current position and future position. Figure 2 is a diagram showing the relationship between the trajectory of the current position and the future position of the conventional fire control device. Figure 3 is a diagram of the present invention. Figure 4 shows the configuration of a fire control device to which the present invention is applied and the relationship between the current position, future position, and corrected future position. (11 is the radar, (2) is the current position signal, (3) is the tracking calculation device,
(4) is a target movement direction signal, @ is a speed signal, (6) is a shooting calculation device, and ff) is a future position signal. fi) is the firearm, [9] is the target, 0 is the current position after the bullet flight time, ■ is the future position, and a2 is the trajectory of the current position. Nishiki is the tangent to the trajectory of the current position, aJ is the trajectory of the future position,
aS is a bullet flight time signal, Kasumi is a delay device, 1m) is a delayed future position signal, U is a future position error calculation device, aS is a future position error signal, aIJ is a future position error calculation device, (
) is the corrected future position signal, ■ is the future position is the locus of the corrected future position according to the present invention. Note that the same reference numerals are given to the same or corresponding parts in FIG. Agent Shin Kuzuno −

Claims (1)

[Claims] Obtain the instantaneous position of the target by tracking the target with radar, etc., calculate the direction and speed of the target's movement, and, assuming that the direction and speed of movement do not change, calculate the target position after time has elapsed. In the future position calculation device that calculates the predicted position of
a delay device for delaying the predicted position by t time in order to compare the time-aligned current position of the target with the predicted position;
It has a future position error calculation device that calculates a predicted position error by subtracting the current position from the delayed predicted position, and a future position error correction device that adds the predicted position error to the predicted position to correct the next predicted position. A future position calculation device characterized in that the next predicted position is calculated using the predicted position error.