效果

cesiumRadar.js

import * as Cesium from 'cesium';
export function addentities(viewer, res, index) {
  viewer.entities.add({
    id: index,
    position: Cesium.Cartesian3.fromDegrees(res[0], res[1]),
    wall: {
      positions: new Cesium.CallbackProperty(() => {
        return Cesium.Cartesian3.fromDegreesArrayHeights(positionArr);
      }, false),
      material: new Cesium.Color.fromCssColorString('#00dcff82'),
      distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0.0, 50.5e6),
    },
    ellipsoid: {
      radii: new Cesium.Cartesian3(300000.0, 300000.0, 300000.0),
      maximumCone: Cesium.Math.toRadians(90),
      material: new Cesium.Color.fromCssColorString('#00dcff82'),
      outline: true,
      outlineColor: new Cesium.Color.fromCssColorString('#00dcff82'),
      outlineWidth: 1,
      distanceDisplayCondition: new Cesium.DistanceDisplayCondition(0.0, 50.5e6),
    },
  });
  var heading = 0;
  var positionArr = calcPoints(
    res[0],
    res[1],
    300000.0, //此处与圆的半径保持一致
    heading,
  );
  viewer.clock.onTick.addEventListener(() => {
    heading += 10.0;
    positionArr = calcPoints(res[0], res[1], 300000.0, heading);
  });
}
function calcPoints(x1, y1, radius, heading) {
  var m = Cesium.Transforms.eastNorthUpToFixedFrame(Cesium.Cartesian3.fromDegrees(x1, y1));
  var rx = radius * Math.cos((heading * Math.PI) / 180.0);
  var ry = radius * Math.sin((heading * Math.PI) / 180.0);
  var translation = Cesium.Cartesian3.fromElements(rx, ry, 0);
  var d = Cesium.Matrix4.multiplyByPoint(m, translation, new Cesium.Cartesian3());
  var c = Cesium.Cartographic.fromCartesian(d);
  var x2 = Cesium.Math.toDegrees(c.longitude);
  var y2 = Cesium.Math.toDegrees(c.latitude);
  return computeCirclularFlight(x1, y1, x2, y2, 0, 90);
}
function computeCirclularFlight(x1, y1, x2, y2, fx, angle) {
  let positionArr = [];
  positionArr.push(x1);
  positionArr.push(y1);
  positionArr.push(0);
  var radius = Cesium.Cartesian3.distance(
    Cesium.Cartesian3.fromDegrees(x1, y1),
    Cesium.Cartesian3.fromDegrees(x2, y2),
  );
  for (let i = fx; i <= fx + angle; i++) {
    let h = radius * Math.sin((i * Math.PI) / 180.0);
    let r = Math.cos((i * Math.PI) / 180.0);
    let x = (x2 - x1) * r + x1;
    let y = (y2 - y1) * r + y1;
    positionArr.push(x);
    positionArr.push(y);
    positionArr.push(h);
  }
  return positionArr;
}

vue页面引用

import { addentities } from './cesiumRadar'
const stationAll = [
		[109.5, 34.5],
		[118.1, 24.4],
		[109.5, 18.3],
		[75.87, 40.47],
	];
	//加载雷达
	stationAll.forEach((res, index) => {
		new addentities(viewer, res, index);
	});