RU2781914C1 - Method for displaying the mutual positioning of the background and target situation and a combat vehicle equipped with a sighting apparatus and a satellite navigation system - Google Patents

Abstract

FIELD: navigation.

SUBSTANCE: invention relates to the field of terrain navigation systems. Proposed is a method for displaying the mutual positioning of the background and target situation and a combat vehicle, consisting in displaying the location of the combat vehicle on a digital map of the terrain as determined by a satellite navigation system, wherein the direction of the axis of the body of said combat vehicle and the line of sight of the sighting apparatus are additionally indicated. In order to initially establish or specify the grid azimuth when the combat vehicle is stationary, a conditional graphic designation of the combat vehicle is approved. The pulsating line of sight against the background of a digital map of the terrain indicates a visually defined reference point. When the combat vehicle is moving, the grid azimuth is specified by marking the motion vector determined by the satellite navigation in a rectilinear section of the trajectory of said combat vehicle with a solid line.

EFFECT: display of the grid azimuth of the combat vehicle and the direction of the line of sight on a digital map of the terrain by means of satellite navigation data and by aligning the line of sight with a topographic map, providing a possibility of improving the characteristics of situational awareness, command controllability without applying instruments and equipment of the navigation system, minimising the incorrectness of display of coordinates of the target on a digital map of the terrain.

1 cl, 4 dwg

Description

"Method ...", which provides visualization of the spatial orientation of an object on a digital map of the area, refers to methods of orientation on the ground.

The claimed "Method ..." solves the problem of determining the spatial orientation of a combat vehicle, in particular, a tank, with display on a map of the area without using an inertial navigation system due to movement and / or reference to the map by a visual landmark and allows you to determine the directional angle without using an inertial navigation system . “Method…” greatly simplifies the process of topographic referencing, orientation, work with objects plotted on a digital map of the area as target points. Visualization of the direction of the line of sight on a digital map of the area allows you to quickly aim the sight at an object of interest on the ground, for example, marked on the map as a target. This increases the probability of correct positioning of the combat vehicle and reduces the time to search for the target and the time required to arrive at the designated point.

EFFECT: displaying the directional angle of the combat vehicle and the direction of the line of sight on a digital map of the area due to satellite navigation data and matching the line of sight with a topographic map, which makes it possible to improve situational awareness, command controllability without the use of instruments and equipment of an inertial navigation system, minimizing incorrect display target coordinates on a digital terrain map

The inertial method for determining coordinates, described, for example, in [1] as a strapdown inertial navigation system (SINS), automatically determines the spatial angles of an object with display on an electronic map of the area.

The presence of an inertial navigation component allows you to determine the spatial orientation of an object in automatic mode without the need to bind to a visual landmark or perform a maneuver designed to determine the motion vector [2].

According to publications [2] and [3], for example, such equipment has rather large dimensions and weight and is difficult to place in the already formed internal space of the vehicle. Moreover, the use of a high-precision inertial navigation system significantly increases the cost and complicates the operation of the facility.

A simpler solution for determining the coordinates, as well as the spatial orientation of an object, are satellite navigation systems [4]. Satellite navigation systems are able to calculate not only geographic coordinates, but also the speed of an object, as well as the direction of its movement.

The claimed "Method ..." uses a satellite navigation system, a sighting device aligned with the body of a combat vehicle, as well as cartography, which makes it possible to determine the directional angle without the use of an inertial navigation system and greatly simplifies the process of topographic referencing, orientation of guns and instruments, and work with objects plotted on the digital map of the area as target points.

The implementation of the claimed "Method ..." consists in displaying the location of the combat vehicle on a digital map of the area determined by the satellite navigation system, while additionally indicating the direction of the body axis of the said combat vehicle and the line of the sighting device. For the initial setting or clarification of the directional angle when the combat vehicle is stationary, the conditional graphic designation of the combat vehicle on the map is coordinated with its actual orientation on the ground, for which the direction of the conditional line of sight displayed against the background of a digital terrain map is indicated so that the object on the map, through which the conditional line of sight passes, corresponded to the landmark observed through the sighting device. When the combat vehicle moves, the directional angle is specified by the line of the motion vector determined by satellite navigation on the straight section of the trajectory of the said combat vehicle.

The implementation of the claimed "Method ..." explain Figure 1, showing the information observed by the operator on the screens of the navigation device to match the symbolic designation of the combat vehicle with a digital map of the area; Fig.2, carrying information about the actual location of objects on the ground; Figure 3 represents the information observed by the operator on the screens of the navigation device after matching the symbolic designation of the object with a digital map of the area. The positions in Fig.1 indicate:

pos.1 - conventional graphic designation of the combat vehicle, including the designation of the bow for orientation, printed on a digital map of the area at a point with coordinates determined by a satellite navigation system;

pos.2 - a straight line depicting the direction of the line of sight relative to the body of the combat vehicle;

pos.3 - the direction set by the operator as the true direction of the line of sight, determined using the spatial data of the digital map of the area and the image observed in the field of view of the sighting device;

pos.4 - a landmark observed in the field of view of the sighting device, and indicated on a digital map of the area;

pos.5 - aiming mark in the field of view of the sighting device, indicating the direction of the line of sight.

Pos.6 in Fig.2 indicates the field of view of the sighting device.

At the same time, the coordination of the orientation of the conditional graphic designation of the combat vehicle, the direction of the line of sight with a digital map of the area using cartography and additional conditionally graphic designations is carried out in the following order:

- the operator, guided by the situation observed through the sighting device, finds an object, which is also represented on the digital map of the area, and directs an aiming mark at it;

- the operator indicates on the digital map of the area the position of the object currently observed in the field of view of the sighting device, due to which the current directional angle of the object is set, which is used later for the mutual display of the phono-target situation and its own location (Fig. 1, pos. 1-5 ).

The implementation of the claimed "Method ..." also explains Figure 4, which, in turn, illustrates the determination of the directional angle using the accumulated information about the movement vector of the combat vehicle, where:

pos.7 - conventional graphic designation of the combat vehicle before the start of movement;

pos.8 - the trajectory of the combat vehicle;

pos.9 - conventional graphic designation of the combat vehicle after the start of movement, with a reliable representation on the digital map of the area of the spatial orientation of the mentioned combat vehicle and the direction of the line of sight;

pos. 10 - conditional straight line characterizing the direction to the north;

α ₀ - directional angle, taken as the source for displaying the conditional graphic designation of the combat vehicle before the start of movement;

α ₁ - directional angle, refined in the process of movement of the combat vehicle.

Thus, the directional angle determined using the accumulated information about the movement vector of the combat vehicle refines the directional angle determined from the visual landmark. Mutual display of spatial data and the own location of the combat vehicle will allow visualization of the true direction of the hull of the said combat vehicle on a digital map of the terrain, which eliminates the need to search for landmarks in real terrain and, taking into account their relative position, get an idea of the orientation of the combat vehicle. Visualization of the true direction of the body of the combat vehicle on a digital map of the area in real time will allow you to instantly make a decision on the direction of the maneuver required in the current situation.

Visualization of the direction of the line of sight on a digital map of the area allows you to quickly aim the sight at an object of interest on the ground, for example, at an object marked on the map as a target, while increasing the likelihood of correct positioning of the combat vehicle and reducing the time required to arrive at the designated point, time to find targets.

In this case, it is possible to clarify additional conditional graphic symbols described when deciphering the positions of Fig.1, Fig.2, Fig.3, Fig.4.

The claimed "Method ..." will determine the directional angle without the use of an inertial navigation system, which greatly simplifies the process of topographic referencing, orientation of guns and instruments, determining the coordinates of targets and displaying them on the map. This increases the probability of correct positioning of the combat vehicle and reduces the time to search for the target and the time required to arrive at the designated point.

The authors of the claimed "Method for displaying the relative position of the background-target environment and a combat vehicle equipped with a sighting device and satellite navigation system" are not aware of the use of satellite navigation as a tool for presenting information about the directional angle determined using a visual landmark on a digital map of the area and refined by the accumulated information about the motion vector mentioned combat vehicle.

Literature

1. Portnov B.I. and other Strapdown inertial navigation system. RF patent No. 2704198. IPC G01C 21/00, G01C 19/66. Priority from 03/28/2019, publ. 24.10.2019, bull. No. 30. The patent is valid.

2. Inertial navigation system: general information, principle of operation, classification and methods of orientation. [Electronic resource] URL: https://abc-import.ru/gps/1834-inercialnaja-navigacionnaja-sistema-obshhie-svedenija-princip-dejstvija-klassifikacija-i-sposoby-orientacii/ (accessed 03/10/2021) .

3. Strapdown inertial navigation system. [Electronic resource] URL: http://www.bntu.by/bins.html (accessed 03/10/2021).

4. Navigation system. [Electronic resource] URL: https://glonass-std.ru/sistemy-navigatsii/vidy-navigatsionnyh-sistem.html (accessed 03/10/2021).

Claims (1)

A method for displaying the relative position of the background-target environment and a combat vehicle equipped with a sighting device and a satellite navigation system, characterized in that, when the location of the combat vehicle is displayed on a digital map of the area, without the use of instruments and equipment of the inertial navigation system, the direction of the hull axis of the said combat vehicle is additionally indicated machines and lines of the sighting device, while for the initial installation or clarification of the displayed directional angle when the combat vehicle is stationary, the conditional graphic designation of the combat vehicle is coordinated with the digital map of the area by indicating on the said digital map of the area the landmark observed through the sighting device, while when the combat vehicle is moving clarification of the displayed directional angle is provided by orientation of the conditional graphic designation, taking into account the motion vector determined by the satellite navigation system on a straight line einy section of the trajectory of the said combat vehicle.

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