JPH0650249B2 - Navigation display method - Google Patents

Description

The present invention relates to a navigation display method for displaying the position of a ship, the direction of travel, the direction of a destination, and the deviation from a course.

“Prior Art” In the past, position data received by, for example, a Loran receiver while a ship was navigating was simply displayed as a numerical value. This numerical data includes the latitude and longitude of the current position, the latitude and longitude of the destination, the traveling direction of the ship, the direction of the destination, the amount of deviation from the course, and the deviation direction. It is difficult for the driver to intuitively understand what kind of state he is in even if he looks at these numerical information.
It was difficult to intuitively judge what kind of steering should be taken.

An object of the present invention is to provide a navigation display method in which the direction and amount of deviation from the course can be intuitively sensed and can be steered easily.

[Means for Solving the Problems] According to the present invention, the traveling direction of the ship is fixedly displayed as a linear traveling direction display, and the own ship position is fixedly displayed as the own ship display at one end of the traveling direction display. , The destination direction is variably displayed as a destination direction display on a circle centered on the ship's display, and according to the amount and direction of deviation from the course in the direction perpendicular to the traveling direction display with respect to the ship's display. The position shift display is variably displayed.

[Embodiment] FIG. 1 shows an example of a display displayed by the navigation display method according to the present invention.

In the present invention, a traveling direction display 11 for fixedly displaying the traveling direction of the ship in a straight line is provided. In this example, the traveling direction display 11 is vertically extended in the center of the display screen. The own ship position is fixedly displayed as the own ship display 12 at one end of the traveling direction display 11, that is, the lower end in the figure. A destination direction display 14 indicating a destination direction is variably displayed on a semicircle 13 centered on the own ship display 12. A frequency scale is provided on the semicircle 13 so that the deviation amount of the destination direction display 14 with respect to the traveling direction display 11 can be read.

In the direction orthogonal to the traveling direction display 11 with respect to the own ship display 12,
The deviation amount from the course and the deviation direction are displayed as a deviation display 15. A scale 16 is displayed so that the shift amount of the shift display 15 can be read.

In addition to that, the numerical value of the traveling direction is displayed as “HDG345 °” just above the traveling direction display 11, the number of the destination direction is displayed as “STG332 °” in the upper right of the screen, and the ship speed is “SPD 10.4 KT” in the upper left of the screen. Is displayed as. The distance from the ship to the destination is displayed as "DIST 150.2 NM" across the traveling direction display 11 in the center of the screen, and the time required to reach the destination is "TTG 14: 2" in the lower left part of the semicircle 13.
It is displayed as "6", and the amount of course deviation is displayed as "XTE 4.6 NM" in the lower right part of the semicircle 13. The latitude and longitude of the destination are displayed as "WP6 N36 ° 40.67, E149 ° 59.65" in the lower left of the screen, and the latitude and longitude of the current position are "N34 in the lower right of the screen.
It is displayed as "21.65, E151 25.01". A display “N” indicating the north direction and a display “W” indicating the west direction are displayed respectively when approaching the semicircle 13. The reliability of the received radio wave is displayed by the display "S / N", and "CS" is displayed when the reliability of the radio wave is poor. In this example, color display is used, and each of white, red, yellow, and green shown in the figure is displayed.

In this display, the end of the deviation display 15 and the target direction display 14
A straight line 17 connecting with and indicates the course. That is, in the display of this example, as shown in FIG. 2, the current position is displaced to the left with respect to the course connecting the starting base point and the destination, and the state where the traveling direction and the course intersect may be displayed. You can read it sensuously. Therefore, if the steering wheel is steered to the right in the direction indicated by the deviation display 15, that is, to the right in the figure, the vehicle approaches the course. Since the traveling direction display 11 and the course 17 intersect, the vessel is advanced to the intersection. It is understood that the rudder may be steered toward the destination. Alternatively, turn the course toward the destination without returning to the course.

The deviation display 15 may be a dot display that is positioned on either side of the own ship display 12 according to the deviation direction and the distance to the own ship display 12 corresponds to the deviation amount. The destination direction display 14 is not limited to being displayed on the semicircle, but may be displayed on the closed circle. The diameter of the semicircle 13 may be increased or decreased according to the distance to the destination, or the length of the traveling direction display 11 may be variable.

"Effect of the Invention" As described above, according to the present invention, the traveling direction display 11,
By displaying the own ship display 12, the destination direction display 14, and the deviation display 15, the deviation amount, the deviation direction with respect to the course,
The relationship between the destination direction and the traveling direction, that is, the situation shown in FIG. 2 can be intuitively understood and steering is easy.

[Brief description of drawings]

FIG. 1 is a diagram showing a display example by a navigation display method according to the present invention, and FIG. 2 is a diagram showing a relationship between a course, a traveling direction and a deviation.

Claims (1)

[Claims] 1. A traveling direction display for fixedly displaying the traveling direction of the own ship, a own ship display for fixedly displaying the own ship position at one end of the traveling direction display, and a circle centered on the own ship display. The destination direction display that variably displays the destination direction above, the amount of deviation from the course that corresponds to the distance from the planned course to the current position, and the direction of the deviation are the above-mentioned traveling direction with respect to the own ship display. A deviation display that variably displays in the direction perpendicular to the display and a navigation display method that displays.