JPS60159667A - Display method of target presence area - Google Patents

Abstract

PURPOSE:To easily limit the existing position and to analyze the motion of a target by deriving a target searching area by processing with a pre-searching device and a target motion analyzing device, and displaying detection information and the target searching area on the same picture plane one over another. CONSTITUTION:The detection cability of an underwater target search sensor 1 for target detection is estimated by the processing of the pre-searching device 2, and the target motion analyzing device 3 limits the existing position limit and analyzes the motion of the target on the basis of the search information of the underwater target search sensor 1 and the pre-search result of the pre-searching device 2. The pre-search result, detection information, etc., are stored in memory 4 and various control instructions, data, etc., for controlling the pre-searching device 2, target motion analyzing device 3, and display device 6 are inputted to an input device 5. Further, the detection information of the underwater target search sensor 1, processing results of the pre-searching device 2 and target motion analyzing device 3, various control information inputted by a user through the input device, etc., are displayed on a display device 6.

Description

[Detailed Description of the Invention] [First Field of the Invention] The present invention is mounted on a ship, etc., and uses an underwater target search sensor (sonar, etc.) to search for and detect an underwater target, and to localize the location of the target. -Relates to a method for displaying a target area in a position/negative local/motion analysis device that performs motion analysis.

[Background of the invention]

Conventional position localization/motion analysis equipment uses detection information (target position, target orientation, etc.) from underwater target search sensors.
When displayed, it is displayed as a point, line, or numerical value for each detection time. Therefore, if the detection information is not position information that can be regarded as a point, it takes a very long time to localize the target position, analyze the target motion, etc. from the display screen of the detection information of the underwater target search sensor. . This is mainly the detectable area of underwater target search sensors (
Because it takes time to calculate and estimate the detection ability (detection ability) and check whether the obtained detection information exists within the detectable area,
It is something that occurs. For example, in the case of a passive sensor that detects a target by receiving sound waves generated by the target, only the direction information of the target can be obtained as detection information, so it takes time to compare the data between the detection information, and the target's location is limited. - Motion analysis took a long time.

[Purpose of the invention]

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, calculate and estimate the detection information from an underwater search sensor and the detectable area of the underwater search sensor, and determine whether the detected information exists within the detectable area. It is an object of the present invention to provide a method for displaying a target existing area, which allows immediate execution of position localization and motion analysis of the target by quickly performing verification.

[Summary of the invention]

The target detection area display method of the present invention determines the target detectable area of the underwater target search sensor through processing by a prediction device and a target motion analysis device, and displays the detection information of the underwater target search sensor and the target detectable area on the same screen. By superimposing the display on the target area, the area where the target exists is displayed, which makes it easier to localize the target position and analyze its movement.

[Embodiments of the invention]

The present invention will be described in more detail below with reference to embodiments shown in the accompanying drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. The position localization/motion analysis device shown in Fig. 1 consists of an underwater target search sensor 1 for target detection and an underwater target search sensor 1.
a prediction device 2 for estimating the detection capability of the target, and a target motion analysis device 3 for performing position-localized φ motion analysis of the target based on detection information from the underwater target search sensor 1 and prediction results from the prediction device 2.
, a memory 4 for storing prediction results, detection information, etc., an input device 5 for inputting various control commands, data, etc. for controlling the operations of the prediction device 2, the target motion analysis device 3, and the display device 6; Detection information of target search sensor 1 and prediction device 2
and a display device 6 that displays the processing results of the target motion analysis device 3 and various control information manually input by the user from the input device 5.

The prediction device 2 receives water temperature data input from the input device 5.
It has the ability to calculate propagation loss corresponding to the propagation distance of sound waves based on water depth data, weather data, target frequency, etc. FIG. 2(a) is a diagram showing an example of the characteristics of the propagation loss TL (propagation loss characteristics) with respect to the propagation distance R of the sound wave determined by the prediction device 2. In Fig. 2C), the 2-in-11 is a target motion analysis device based on the search mode, analysis mode, target frequency, target frequency level, sea area noise, etc. of the underwater target search sensor l inputted from 5 to the input device. 3 shows a capability index FOM indicating the detection capability of the underwater eye search sensor 1 determined by 3. Then, there is a region where the propagation loss TL is larger than the capability index FOM (line 11
In the area below 5) 1j), the underwater target search sensor l has lost its target detection ability, and in the area where the propagation loss TL is smaller than the capability index FOM (the area indicated by the diagonal line above line 11), the underwater target search sensor l has lost its target detection ability. This means that the target search sensor 1 has the ability to detect a target. Therefore, in Fig. 2(a), for the propagation distance R of the sound wave, the distance 1@O(
R≦rl.

It can be seen that the underwater target search sensor J can detect a target in a region where r2≦R≦r5 and rJ≦R≦r5.

When this detectable distance is displayed on the display device 116 in the horizontal direction with the own ship as the center, the detection area 5JMl' of the underwater target search sensor 1 as shown in FIG. 2(b) is obtained.

The propagation loss characteristics of the target sound shown above, the capability index FOM of the underwater target search sensor l, the detectable distance of the target which can be taken as the intersection of the former two, and the detectable area as shown in Figure 2 (b). The prediction device 2 and the target motion analysis device 3 are stored in the memory 4 in advance. During the search, the detectable area of the target as shown in FIG. can do. And underwater target search sensor 1
By displaying the detection information on the display device 6 together with the detection information outputted from the system, the operator can immediately perform position localization and motion analysis of the target.

The above processing may be performed at the same time as the search using the underwater target search sensor 1. In this case, the operator inputs new data and parameters to the input device 5 while viewing the displayed results, and then inputs another moxibustion target to the prediction device 2. The prediction results can be processed in advance, and even though the prediction process takes a long time and there are 8 units, it is not enough to process the search and localization of one location.

Figure 3 shows the detectable area shown in Figure 2(b).
The directionality of the detection ability of the underwater target search sensor 1 is calculated and processed in more detail to determine the detection area of the underwater target search sensor 1, which is affected by the noise emitted by the own ship and the configuration of the wave receiving part of the underwater target search sensor 1. FIG.

FIG. 4 CB) shows an example in which the underwater target search sensor 1 detects the direction of the target and displays it on the entire display device 6. FIG. 4(b) shows the target detectable area shown in FIG. 3 and the underwater target search sensor l shown in FIG. 4(a).
This is an example of a display that shows the common areas of the two detection information. FIG. 4(c) is a display example including the detection azimuth range of the underwater target search sensor 1, regarding the display example of the m4 diagram (b)(7). Similarly, FIG. 4(d) shows that the detection distance of the underwater target search sensor l is large, and in order to prevent the target existence area from becoming small and difficult to visually recognize when displayed on the display device 6, This is a display example in which the area is enlarged.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the operator can easily visually confirm the detectable area of the underwater target search sensor, and furthermore, by displaying the detection information of the underwater target search sensor together with the detection information, For example, even if the detection information is only the target direction information, it is possible to immediately visually recognize the target's location-localized fist movement analysis, etc.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 (
Figure 2 (b) and Figure 3 are diagrams showing display examples of the detectable area of the underwater target search sensor shown in Figure 1, and Figure 4 (a) is a diagram showing the propagation loss characteristics of sound waves. Diagrams showing the direction of target existence, Figures 4(b) and (e) I (dl is a diagram showing the target existence area. 1...Underwater target search sensor, 2...Prediction device, 3)
...Target motion analysis device, 4...Memory, 5...Input device, 6...Display device, TL...Propagation loss, FO
M... Ability index. Agent Patent Attorney Tadashi Akimoto Figure 1 Figure 2 (a) Orl r2r3 +41riH 2nd day City) i: Figure 13

Claims (1)

[Claims] 1. The target detectable area of the underwater target search sensor is determined through processing by a prediction device and a target motion analysis device, and the detection information of the underwater target search sensor and the target detectable area are displayed on the same screen. A method for displaying a target region, characterized in that the target region is superimposed and displayed, thereby localizing the target position and analyzing the motion. 2. The method for displaying a target area as set forth in claim 1, characterized in that when displaying the target area, the detection azimuth width is enlarged and displayed.