RU2549350C1 - Method of displaying radar information - Google Patents

Abstract

FIELD: radio engineering, communication.

SUBSTANCE: result is achieved by radar stations receiving radio signals reflected from objects; converting the received signals to digital form; displaying said signals on a flat screen in the form of light spots on the z0y plane, and azimuthal and range scales in the form of crossing lines, also on the z0y plane; wherein the z0y plane of the screen is virtually inclined in the planes z0-x and y0-x planes from 0 to 45 degrees; the spot from the object is transferred and illuminated above the inclined plane of the screen by the value of the height of the object and converted to a virtual spot; a bar is added to said virtual spot parallel to the axis 0z, with the scale of the height on the bar, in the direction of the inclined plane of the screen; the height bar rests with one end on the virtual spot from the object, and by the second end on the point of real azimuth and range values of the object on the screen inclined by 45 degrees, on which a point with the azimuth and range values of the object relative to the point of location the radar station is illuminated, and the z0y plane of the screen inclined by 45 degrees displays either the horizontal plane of the earth or the plane of the surface of the earth relative to the point of location of the radar station, wherein the length of the height bar, with the height scale, characterises the height of the object over the horizon or over the surface of the earth, and the speed and direction of movement of the object in space is displayed by a bar-velocity vector, the beginning of which rests on the illuminated virtual spot of the object, and the direction of the bar-velocity vector characterises the direction of movement of the object in space relative to the point of location of the radar station. A velocity scale is placed on the bar-velocity vector, said scale characterising the velocity of the object in space.

EFFECT: broader functional capabilities.

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Description

The invention relates to indicator devices of radar stations (radar), and in particular to methods of displaying radar information from air, surface and ground objects.

A known method of displaying radar information on one flat screen in three coordinates is azimuth - elevation - range, which consists in the fact that the azimuth - elevation indicator for an approximate indication of range (third coordinate) displays a mark in the form of so-called wings, when A horizontal dot is added to the point mark. (Radar devices (theory and construction principles) ./ Edited by V.V. Grigorin-Ryabov. M.: Soviet Radio, 1970, pp. 283-286).

The disadvantage of this method is the low accuracy of information retrieval, the operator’s lack of sensation of a real image of the monitored radar space and, as a result, the likelihood of errors when reading information from the indicator and the inability to display and evaluate the speed, as well as the direction of movement of the object in space.

Known methods for displaying radar information from airborne objects in a three-dimensional coordinate system on one flat azimuth screen - range in the form of brightness marks that vary in color depending on the angular position or flight height of an airborne object relative to the radar (RU 2237260, class G01S 7/04 2004 ; JP 60200182, CL G01S 7/12, 1985). Changing the color of objects on the screen in this method ensures the separation of displays of closely spaced targets or overlapping sections of the coastline in the form of a receding cascade of partially overlapping similar multicolored images.

The disadvantage of these display methods is the ambiguity of the display of the angular position of airborne objects due to the difference in color perception by different radar operators and, as a result, errors occur. In addition, in these devices there is no possibility of a visual assessment of the speed and direction of movement of an object in space.

There is a method of displaying radar information from airborne objects in a three-dimensional radar coordinate system in the form of brightness marks on separate indicators azimuth - range and range - height (elevation angle), located on one panel, and display azimuth and range scales in the form of intersecting lines on one plane screen, and long-range and high-altitude lines on another flat screen. (A guide to the basics of radar technology / Edited by V.V. Druzhinin. M: Military Publishing House, 1967, pp. 404-416). The method described in the above manual is practically implemented in the PRV-11 and PRV-13 radio altimeters and consists in placing two separate flat azimuth screens — range and range — altitude (elevation angle), connected at the inputs to the outputs of the radar information channels, on one panel (elevation, high-altitude and rangefinder). On the azimuth - range indicator, a scale grid is displayed in the form of azimuthal and range lines, and on the azimuth - range indicator, a scale grid is displayed in the form of range and elevation lines.

The disadvantage of this method is the inability to display on one screen three coordinates of the object (azimuth - elevation (height) - range), speed and direction of movement of the object in space. This, in turn, leads to the need to use several operators, since at a high rate of data output due to the lack of natural spatial perception of information on different indicators, one operator is not able to provide accurate information in large volume and at high speed. In addition, information on the speed of movement of the object and the direction of movement in space on these indicators is missing and it is impossible to implement them.

The aim of the invention is to create a new way of displaying radar information on the parameters of air, surface and ground objects with previously unknown capabilities for radar and, as a result, high-precision and highly reliable display of three plane coordinates, displaying the direction of movement and speed of objects on one common flat screen, which will provide I’ll get information from the indicator at a faster speed, in a larger volume and with higher reliability.

The technical result is achieved by the fact that in the proposed method for displaying radar information, which includes receiving by the radar station the radio signals reflected from objects relative to the location of the radar, converting the signals received from the objects into digital form, displaying the converted signals on a flat screen in the form of light marks on the z0y plane, and azimuthal and long-range scales in the form of intersecting lines also on the z0y plane (Figure 1), and to display information about the height, direction of movement and speed the object’s spacers in space, the z0y screen plane is virtually tilted in the z0-x and y0-x planes from zero to 45 degrees (Figure 2), while the mark from the object is transferred parallel to the 0z axis and displayed above the inclined screen plane by the value of the measured radar height finding the object and turn it into a virtual mark, add a dash parallel to the 0z axis to this virtual mark of the object, with a height scale on the dash, in the direction of the plane of the tilted screen, while the height dash is abutted at one end by the virtual mark from the object, and the second to They rest against the point of the real azimuth and range of the object on a screen inclined at 45 degrees, on which a point with the azimuth and range of the object relative to the radar’s standing point is displayed, and the plane of the screen inclined by 45 degrees displays either the plane of the earth’s horizon or the plane of the earth’s surface relative to radar standing points (depending on the radar operating mode), while the length of the height line, with a height scale, characterizes the height of the object above the horizon or above ground level (depending on the operating mode you’re a radar), and the speed and direction of moving an object in space is displayed by a dash-speed vector, the beginning of which rests on the displayed virtual mark of the object, and the direction of the dash-speed vector corresponds to the direction of movement of the object in space relative to the radar’s standing point, and in addition to the dash- the velocity vector is applied to the velocity scale, which characterizes the magnitude of the speed of movement of an object in space.

Comparison of the proposed method with known methods shows that it has a new set of essential features that can successfully implement the goal.

The essence of the proposed technical solution becomes even more clear from the graphic material attached to it.

Figure 1 schematically presents a two-dimensional azimuth indicator - the range of the radar circular view.

Figure 2 schematically shows the conversion of a two-dimensional indicator into a four-dimensional radar indicator azimuth - range - altitude - speed due to the inclination of the z0y plane by 45 degrees in the z0-x y0-x planes.

Claims (1)

A method for displaying radar information, including the reception by a radar station of radio signals reflected from objects relative to a radar location, converting signals received from objects into digital form, displaying the converted signals on a flat screen in the form of light marks on the z0y plane, and azimuthal and long-range scales in the form of intersecting lines also on the z0y plane, characterized in that for displaying information about the height, direction of movement and speed of the object in space, the plane of the screen, depicted on the z0y plane, virtually tilt in the z0-x and y0-x planes from zero to 45 degrees, while the mark from the object is transferred parallel to the 0z axis and highlighted above the tilted screen plane by the measured radar height of the object and turn into a virtual mark, add a dash parallel to the 0z axis to this virtual label of the object, with a height scale on the dash, in the direction of the tilted plane of the screen, while the height dash is abutted at the virtual mark from the object with one end and rested against the point of rea the azimuth and range of the object on a screen tilted at 45 degrees, on which a point with the values of the azimuth and range of the object relative to the radar’s standing point is displayed, and the plane of the screen tilted 45 degrees displays either the earth’s horizon plane or the earth’s plane relative to the radar’s standing point ( depending on the mode of operation of the radar), while the length of the height bar, with a height scale, characterizes the height of the object above the horizon or above the ground (depending on the mode of operation of the radar), and the speed and The notion of moving an object in space is displayed by a dash-velocity vector, the beginning of which rests on the displayed virtual mark of the object, and the direction of the dash-velocity vector characterizes the direction of movement of the object in space relative to the radar's standing point, and in addition to this, a speed scale is applied to the dash-velocity vector, which characterizes the magnitude of the speed of movement of the object in space.

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