CHOICE PLOTTER FOR OBJECTS UNDER OBSERVATION FROM ORBITAL SPACECRAFT Russian patent published in 2008 - IPC G01C21/24 

FIELD: physics; cosmonautics.

SUBSTANCE: choice plotter of objects under observation from orbital spacecraft (SC) includes translucent plate with image of SC orbit pass curve, flexible belt located under the plate and containing two applied copies of planet surface map with aligned equator end point of the first copy of map and equator start point of the second copy of map, and map belt shift device along the plate from two spaced and parallel interconnected shafts on which closed belt radially moving along the map equator lines is mounted. In addition there are introduced flexible translucent belt with object image of two copies of stellar map, including ecliptic line with aligned equator end point of the first copy of map with equator start point of the second copy of map, and stellar map object image belt shift device along the plate from at least two spaced and parallel interconnected shafts on which newly introduced belt moving along map equator line. Along the axes perpendicular to map equators, stellar map scale and belt width with stellar maps coincides respectively with terrestrial map scale and belt width with terrestrial map. Along equatorial axes, stellar and terrestrial surface map scales are executed in ratio 1:K. Stellar map object image belt shift device is executed in the form of two spaced and parallel interconnected shafts. The radius of shafts of stellar map object image belt shift device is more or equal to radius of shafts of terrestrial surface map belt shift device. Distance between shaft axes of stellar map object image belt shift device exceeds total distance between shaft axes of terrestrial surface map belt shift device and radiuses of all four shafts of both belt shift devices Width of plate with orbit line image and width of belts are provided in relation equal or more than relation of orbit dip angle to 90°.

EFFECT: provided simultaneous display of spacecraft passage over land objects and coelosphere objects.

2 cl, 3 dwg