초록 ▼

A process provides radar scan conversion from radar amplitude data in polar coordinates to rectangular coordinates by a digital computer which receives (r,.theta.) coordinate amplitude data from a radar receiver and which supplies (x,y) coordinate amplitude data which covers a rectangular-shaped dis

A process provides radar scan conversion from radar amplitude data in polar coordinates to rectangular coordinates by a digital computer which receives (r,.theta.) coordinate amplitude data from a radar receiver and which supplies (x,y) coordinate amplitude data which covers a rectangular-shaped display area of a monitor display. A software program generates an aggregate radial scan pattern that consists of a plurality of radials each of which have active lengths that span one or more of a plurality of selected regions of the display such that the region boundaries are square as a result of a modified radial drawing method. Each resolution region is defined by the bisection of the radials forming the previous resolution region and the hole-filled range of the previous resolution region. The display can be generated as an offset display where the antenna center may be offset from the display center.

대표청구항 ▼

[ We claim:] [3.] A process for radar scan conversion of radar data based upon polar coordinates to radar data based upon rectangular coordinates in a programmable digital computer wherein said radar data based on polar coordinates is supplied to said digital computer and comprises antenna angle (.t

[ We claim:] [3.] A process for radar scan conversion of radar data based upon polar coordinates to radar data based upon rectangular coordinates in a programmable digital computer wherein said radar data based on polar coordinates is supplied to said digital computer and comprises antenna angle (.theta.) and echo amplitude range (r) data, and said digital computer supplies radar data based on rectangular coordinates which control (x,y) defined pixels of a viewing area on a monitor display comprising:(a) drawing a plurality of radial lines from an origin each of which lines is associated with an azimuthal resolution region wherein said radial lines bisect the aggregate group of all radial lines associated with all lower azimuthal resolution regions; and(b) determining the resolution region number corresponding to the azimuth number of each of said radial lines; and(c) using the resolution region number of step (b) to determine the hole-filled x or y range produced by the aggregate radial pattern comprising all radial lines in lower resolution regions; and(d) modifying the drawing of said plurality of radial lines of step (a) starting at the x or y range determined in step (c) by filling in the pixels left unfilled when the drawing of any of said radial lines changes by one pixel in both the x and y dimensions.