www.gusucode.com > robot-9 源码程序matlab代码 > robot-9.4Toolbox/rvctools/robot/examples/sensorfield.m

    function sensor = sensorfield(x, y)

    xc = 60; yc = 90;

    sensor = 200 ./ ((x-xc).^2 + (y-yc).^2 + 200);