JPH02154183A - Predicting and display method for flying object position - Google Patents

Abstract

PURPOSE:To easily acquire and track a flying object by detecting the position of the flying object by a laser oscillating and receiving device, predicting the position of the flying object after a necessary time from the last and current detected positions, and displaying the position with vectors. CONSTITUTION:A two-dimensional display device 6 displays all current positions of the flying object 3 that the laser oscillating and receiving device 4 and the predicted position after the specific time with vectors 9. Further, a three- dimensional display device 7 selects and indicates an optional flying object which is displayed on the device 6 by a setter 8 to display the current position in three dimensions and also blink the three-dimensional position after the necessary time. This device 4 extends the acquisition distance greatly as compared with a radar and the fast-speed flying object 3 can be acquired efficiently by one device 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for displaying a predicted AJ+ position of a flying object.

[Prior Art] Radar has conventionally been used as a means for capturing the position of flying objects and the like. Radar emits radio frequency energy from a radar transmitting antenna toward a flying object, receives the reflected radio frequency energy with an antenna and a receiver, and calculates the position of the flying object from the received signal. The image is displayed as a dot on a cathode ray tube or the like.

[Problem to be solved by the invention] However, since the various radars that have been implemented in the past utilize radio frequency energy, their acquisition distance is short (about 300 Ka+ radius), Therefore, in order to capture particularly high-velocity flying objects, it is necessary to install multiple radars (approximately 300
This has been solved by installing one at every Km, but this has the problem of increased equipment costs and the difficulty of capturing high-altitude flying objects.

In addition, since conventional radars only display the current position of a flying object as a point, it is impossible to predict where the flying object will move in the future, resulting in loss of tracking or collision. I couldn't do anything to avoid it by pre-empting 71iI.

It is expected that the number of manned and unmanned high-altitude, high-speed flying objects will increase in the future, and monitoring of flying objects will be possible by accurately capturing their position, speed, and direction, and predicting the future position of each flying object. and ensuring its safety is an important issue.

The present invention has been made in view of these points, and is a high-speed,
To provide a method for predicting and displaying the position of a flying object, which captures the position, speed, and direction of a flying object even at a high altitude, and predicts and displays the moving position after a required time.

[Means for Solving the Problems] The present invention detects and stores the position of a flying object using a laser oscillation/oscillation receiving device, and then detects the position of the flying object again after a specified time has elapsed and stores the previously stored position. The moving direction and moving speed of the flying object are determined from the detected position and the current detected position, and the moving position after the required time is calculated based on the moving direction and moving speed, and the current detected position and movement are displayed on the display device. This invention relates to a method for predicting and displaying a flying object's position, which is characterized by displaying the distance from the predicted position as a vector.

[Function] By detecting the position of a flying object using a laser oscillation/receiving device, even high-velocity, high-altitude flying objects can be captured over a wide range.

Furthermore, since the position of the flying object after a required time has elapsed from the previous detected position and the current detected position is predicted and displayed as a vector, it becomes easy to capture and track the flying object.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which a laser 2 is oscillated from a transmitting/receiving antenna 1, and a laser oscillation/oscillation receiving device 4 is provided to detect the laser that hits a flying object 3 and is reflected. A calculation device 5 is provided which calculates and stores the position of the flying object 3 based on the signal detected by the oscillation/reception device 4, and measures the position of the flying object 3 after the elapse of a required time. A two-dimensional display device 6 and a three-dimensional display device 7 are provided to display the calculation results.

8 in the figure is a setting device for setting the time after which the position of the flying object 3 is predicted, and also setting which flying object to focus on and display on the three-dimensional display device 7. shows.

Detection of the position of the flying object 3, prediction of the position after the elapse of the required time, and display thereof are performed as follows.

Figure 2 shows the movement of the flying object 3 in three dimensions, so
The laser oscillation/oscillation receiving point coordinates C by the laser oscillation/oscillation receiving device 4 are fixed.

The distance 11 of the flying object 3 (position A) is detected by the laser oscillation/vibration receiving device 4, and the reference angle ω from the reference line X at this time is
11 From the elevation angle θ1 at this time, horizontal pressure ML+ and altitude H
1 is calculated by the calculation device 5.

L! −1+cosθI H+−flslnθ1 As a result, the position A of the flying object 3 is determined and stored in the arithmetic unit 5.

Next, after the specified time (unit time) has passed, the flying object 3 (
Distance of position B)! 2, and from the reference angle ω2 from the reference line X at this time and the elevation angle θ2 at this time, the horizontal distance L2
and altitude H2 are calculated and obtained by the calculation device 5.

Ly-1ycosθ2 Hz-jzslnθ2 As a result, the current position B of the flying object 3 after the specified time has elapsed.
is required. Furthermore, it is optional to display the track between A and 8 on the two-dimensional display device 6.

Next, the distance between AB from the previous and current detection distances flLfB, 12 and the angle ω2 between them P = 1 + ' + 12'' -21t 12COS (
lJ2 is determined by the arithmetic unit 5, and the moving speed of the flying object 3 can be determined from this distance [P and the length of the specified time (unit time), and from this, the required time set by the setting device 8 can be calculated. It is possible to predict the position to which it will move after the passage of time. Further, the moving speed and direction of the flying object 3 from B to D can be displayed as the apparent vector 9 on the ground.

The two-dimensional display device 6 displays all the current positions of the flying objects 3 captured by the laser oscillation/oscillation receiving device 4 and the predicted positions after the elapse of the required time as vectors 9, and the three-dimensional display device 7 displays the following: By selecting and instructing any flying object displayed on the two-dimensional display device 6 using the setting device 8, its current position B is displayed three-dimensionally as shown in FIG.
The three-dimensional position after the required time has elapsed is displayed by blinking.

According to the laser oscillation/vibration receiving device 4, the capturing distance can be extended in terms of flight distance compared to a radar, and therefore, the high-velocity flying object 3 can be efficiently captured by one laser oscillation/vibration receiving device 4. It is possible to capture the flying object 3 well and to accurately capture the flying object 3 at a high altitude.

In addition, since the predicted position of the flying object 3 after the required time has elapsed is displayed as a vector on the two-dimensional display device 6, it becomes easy to capture and track the flying object 3, and it is also possible to predict dangers such as collision. It can be avoided in advance.

Furthermore, by selecting and instructing an arbitrary flying object 3 whose vector is displayed on the two-dimensional display device 6 using the setting device 8, the current position of the flying object 3 and the predicted M [position after the elapse of the required time] can be calculated in three dimensions. It is possible to know immediately.

It should be noted that the method for predicting and displaying the position of a flying object according to the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

[Effects of the Invention] As explained below, according to the method for predicting and displaying the position of a flying object according to the present invention, the position of a flying object is detected by a laser oscillation/oscillation receiving device, so that high-speed, It is possible to accurately capture a wide range of flying objects even at high altitudes, and
Since the position of the flying object after the elapse of the required time from the previous detection position and the current detection position is pre-MI and displayed as a vector, it is easy to capture and track the flying object. Various excellent effects can be achieved, such as being able to avoid dangers such as collisions.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of an apparatus for implementing the method of the present invention, and FIG. 2 is a diagram showing an example of a method for detecting the position of a flying object and a method for three-dimensional display. I is a transmitting and receiving antenna, 2 is a laser, 3 is a flying object, 4 is a laser oscillation/reception device, 5 is a calculation device, 6 is a two-dimensional display device, 7 is a three-dimensional display device, 8 is a setting device, 9 is a vector shows.

Claims (1)

[Claims] 1) Detect and store the position of the flying object using a laser oscillation/oscillation receiving device, then detect the position of the flying object again after a specified time has elapsed, and detect the flying object from the previous memorized detection position and the current detection position. Find the moving direction and moving speed, predict the moving position after the elapse of the required time based on the moving direction and moving speed, and display the distance between the current detected position and the predicted moving position on a display device as a vector. A method for predicting the position of a flying object, characterized in that: