JPS5815176A - Video processor of radar device - Google Patents

Abstract

PURPOSE:To calculate a position, a speed, an advancing direction, etc. quickly and with high accuracy, and also to display its value, by automating ranging and operation processing of a range, azimuth information, time information, etc. by a range ring and a azimuth bright line. CONSTITUTION:Signals of a variable range marking circuit 12 and a azimuth bright line forming circuit 14 are inputted to an indicator 6, simultaneously are digitized by a signal processing circuit 24 together with a trigger signal and a reference azimuth signal 22, and are inputted to an input/output controller 26. The controller 26 is controlled by a CPU 28. Video information inputted at a time interval of an operation result by the CPU 28 is stored in a storage device 30. To the controller 26, a signal is applied from a constant picture, that is to say, a tracking part 32 and 34 for its own vessel or other vessel, and this tracking extent becomes a basic data for deriving a position and its variation. As for the controller 26, in accordance with a switching signal of a display switch 36, the signal is applied to a speed indicator 38 and an advancing direction indicator 40 from the controller 26.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image processing device for a radar device, and a special KWk
The present invention relates to a video processing system suitable for calculating the ship speed, traveling direction, etc. of one's own ship or another ship based on II information.

Conventionally, devices for measuring the speed and direction of movement of one's own ship or other ships have been put into practical use, such as a series of needles, GV, etc., and these devices are indispensable to ensure safe navigation. However, these equipment are relatively expensive and difficult to install on cabin vessels, such as in coastal operating areas. Therefore,
In ships that do not have such equipment, the speed and direction of travel of the own ship or other ships are measured solely on the basis of radar images.

In general, radar images are used as a basis [When performing these -1 determinations, the distance and direction to the fixed target are calculated in coastal operation areas where a fixed cut such as a target on Kli can be obtained on the radar image. In addition to measuring and determining the position of own ship or other ships, a method is adopted in which the distance and direction are measured at regular time intervals, and the ship's speed and direction of travel are determined from these determinations and measurement results. This method is advantageous in that the ship's speed and its direction can be measured only from radar images, but if the observer performs the measurement and calculation processing, it is extremely complicated and requires a lot of time. Moreover, it has the disadvantage of low measurement accuracy.

The purpose of this invention is to automate distance and direction measurement and arithmetic processing after setting a distance measurement point on a radar image, and calculate position, speed, direction of travel, etc. quickly and with high precision. An object of the present invention is to provide a video processing device for a radar device that displays values.

This invention uses a variable distance marker circuit to display a distance ring at a distance measurement point set at a specific target on an image given to an indicator trap of a radar device, and also displays an azimuth bright line at the distance measurement point by an azimuth bright line forming circuit. The distance and azimuth information obtained from the positions of these distance rings and azimuth bright lines are tracked and stored at a constant cycle from the time of setting, and the arithmetic processing unit uses this stored data, tracking amount, and cycle time. It is characterized in that the position and the rate of change thereof are calculated through arithmetic processing, and the calculated data is displayed on a display device.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of an image processing device for a radar device according to the present invention. In the figure, a detection output is given to an input terminal 2 from a detector of a radar device, and after this detection output is amplified by a video amplifier 4, it is output to an indicator 6 as a video signal output.
given to. Further, a trigger signal is given to the input terminal 8, and this trigger signal is sent to the sweep circuit l which forms the sweep signal.
A sweep line is formed in the indicator 6 by the output sweep signal of the sweep circuit 10. Further, the trigger signal is applied to each of the variable distance marker circuit 12 and the azimuth bright line forming circuit 14, and the variable distance marker circuit 12 forms a distance marker signal for projecting a distance ring on the image of the instruction IIM 6, and An azimuth bright line forming circuit 14 generates an azimuth bright line signal that reflects the azimuth bright line. In variable distance marker times 11 and 12, there is a potentiometer that controls the distance marker signal to change the position of the distance ring on the image! 16 is added, and this potentiometer 16 is set to be externally operable with an operation knob 16A. In addition, the azimuth bright line forming circuit 14 is equipped with a switch 18 for controlling the generation of the azimuth bright line signal and a potentiometer 20 for setting the azimuth bright line in any direction within 360 degrees. , Also Botensi Buy Meme 2
0 is operated by 20 people using an operating knob installed coaxially with the operating knob 18A. The operating knobs 120A &'c are provided with a pointer 20B that is fixed integrally, and a direction @200 is provided on the outside of the pointer 20B, so that the set direction can be read directly. In the case of the example, the azimuth bright line is formed in such a way that when the sweep line comes around in a set direction in the same way as the heading line, the sweep line is displayed by shining.

In the video signal processing system configured in this way, a distance marker signal output from the variable distance marker circuit 12;
When the azimuth bright line signal output from the azimuth bright line forming circuit 14 is input to the indicator 6, it is converted into a daisymel signal by the signal processing circuit 24 together with the trigger signal UfWC1 and the reference azimuth signal 22, and then input/output control is performed. It is input to the device 26. This human output control device 26 is controlled by a central processing unit 28 as an arithmetic processing section, and inputs the signal and outputs the arithmetic processing signal. The central processing unit 28 inputs digital data in accordance with a predetermined control program stored in an internal storage device. Performs file calculation processing, etc. 1 or '1 obtained by this gain calculation process
Video information periodically captured at two or more regular time intervals is stored in a readable and writable storage device 30 having at least two storage areas.

This storage device 30 is composed of an IO memory and the like, and in this embodiment, an own ship signal storage area 30A and an other ship signal storage area 30B are provided side by side.

In addition, the input/output control device 26 is given a tracking control signal power (given from a tracking unit 32 for own ship and a tracking unit 34 for other ships in order to track a certain image, that is, a preset ranging point, and is given a tracking control signal power (given by this tracking control). The quantity becomes the basic calculation data for finding the position and its change.Furthermore, a switching signal is given to the manpower control device 26 from a display switching device 36 that switches between displaying own ship and other ships, and this switching signal is manually operated. Based on this, the speed signal is given to the speed indicator 38 and the traveling direction signal is given from the input/output control device 26 to the traveling direction indicator 40.In other words, these display devices K: Therefore, as time passes, the arithmetic processing data The display value is displayed while being updated.

In the above configuration, calculation processing of the ship's speed and its traveling direction with respect to a fixed target will be explained. gz diagram Person and B show the radar image from the indicator 6, and B is the image after a certain period of time has elapsed since the person observed the image line. In this case, each image is a relative head-up display,
In the figure, 42 indicates the heading bright line. It is now assumed that the image of the indicator 6 is in the shape Ill shown in Figure 2, and at this point the calculation processing of the ship's speed and its traveling direction is started. That is, in Figure 2, a barrier marker, that is, a distance ring vR, is projected on the image, and the distance measurement point 0 is set on the prominent image 44 of a specific target, that is, a fixed target, and the OK operation knob 16 is pressed at this point. A person is operated to match the distance ring VR.

Similarly, operate the operation knob 18A to switch 18.
, and project the azimuth bright line FL on the image.
The potentiometer 20 is operated using the operation knob 20AtC to align the azimuth bright line PL with the distance measurement point O. The distance marker signal and azimuth bright line signal obtained at this time are converted into digital signals, taken in, and stored in the own ship signal storage area 30A of the storage device 30. These signals are periodically taken in and applied to the storage area 30A at regular intervals, that is, every rotation of the scanner, and the tracking unit 3
2, the relative position from the ship is tracked every scan. This tracking amount is taken into the input/output control device 26,
Taking this tracking amount and one scan time into consideration, the central processing unit 28 calculates the direction from the target and the speed of the own ship after a certain period of time, that is, at the position shown in Figure 2B. can. This calculated data is displayed on the speed indicator 38 and the traveling direction indicator 40, respectively. Note that the position of the pointer 20B on this sharpening operation knob 20A is expressed as the direction term 200.
You can know its direction by reading from it.

Next, about calculation processing of the speed of other ships and their direction of travel.
I will explain. FIG. 3 shows a radar W*I similar to that in FIG. 2, and 8 indicates the target other ship which is the ranging point O. In this case, the distance IIVR and the azimuth bright line FL are made to match the target other ship 8 by the same operation as described above, and the distance marker signal and the azimuth bright line signal obtained at this time are stored in the other ship signal storage area 3.
Store in 0B.

Then, through tracking and calculation processing, the relative movement of the target other ship S with respect to the own ship is calculated, and the speed and traveling direction of the own ship from the fixed target obtained in the calculation processing are added to this calculation result. Performs calculation processing that takes into consideration. In this case, the tracking process is performed by the tracking unit 34 for the other ship. The results obtained by this arithmetic processing are displayed on the display 38, 40 as the speed of the target other ship and its traveling direction based on the switching of the display switch 36. In addition, when changing the target other ship to another ship, it is necessary to once erase the memory in the other ship signal storage area 30B of the storage device 30 associated with the above processing, and then perform the same operation again.

This invention can also be applied to ships equipped with Gyro, Log, etc., in narrow waterways such as the Maratuka sea area, where navigation equipment such as Detsuka and Logan is not fully equipped. This can be effectively carried out in the ocean area.

Further, in the embodiment, only the measurement process of the ship speed and its traveling direction has been described, but it goes without saying that in the calculation process, not only the position but also the state of change thereof can be calculated.

As described above, according to the present invention, the position, speed, direction of travel, etc. can be calculated quickly and accurately based on the radar image, and displayed on the display device simultaneously with the radar image.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an image processing device of a radar apparatus according to the present invention, FIG. 2 is an explanatory diagram showing a radar image, and FIG. 3 is an explanatory diagram showing a radar image. 6... Indicator, 12... Variable distance marker circuit, 14
... Azimuth bright line forming circuit, 26 - Human output control device as arithmetic processing means, 28 - Central processing unit as arithmetic processing means, 30 - Storage device, 38 - Speed indicator , 4o... Traveling direction indicator.

Claims (1)

[Claims] A distance signal is generated and a distance ring is formed on the image of the indicator, and this distance ring is moved by external operation to a distance measurement point set as a target on the image. Variable distance! - an azimuth bright line forming circuit that generates an azimuth signal to form an azimuth bright line on the image and moves this azimuth bright line to the ranging point by external operation; A calculation processing means that calculates the position and change based on the distance signal and azimuth value accumulated at a constant cycle while tracking from the time of setting and generates a display output, and a display output output from this calculation processing means. A video processing device for a radar device comprising a display device for displaying the calculated data.