fix the radar line material bug

modules/material/shader/radar/RadarLineMaterial.glsl

@@ -4,7 +4,7 @@ uniform float speed;
 czm_material czm_getMaterial(czm_materialInput materialInput){
   czm_material material = czm_getDefaultMaterial(materialInput);
   vec2 st = materialInput.st * 2.0 - 1.0;
-  float t = czm_frameNumber * 10.0 / 1000.0 ;
+  float t = czm_frameNumber * speed / 1000.0 ;
   vec3 col = vec3(0.0);
   vec2 p = vec2(sin(t), cos(t));
   float d = length(st - dot(p, st) * p);