• 地球+卫星运动轨迹


    由于工作中, 需要追踪卫星, 记录一下最近的工作成果, 分别有俩个方案, 一个是基于市面上主流的Threejs, 另外一个是基于Cesium, 还尝试过使用, Planetary.js, 效果其实还蛮好, 但是卫星这些不太容易往里加, 就放弃了。
    下面是俩个方案的效果图, 以及原理, 由于版权是公司, 不太好贴出代码, 因此给出参考代码。

    基于使用ThreeJs
    原理

    1. 构建流星, 星团
    2. 使用Threejs构建旋转地球
    3. 构建卫星, 以及在帧率中控制卫星移动

    在这里插入图片描述
    参考源代码如下:

    <html><head>
        <title>Threejs实现卫星太阳板折叠</title>
        <meta charset="UTF-8">
        <!-- <script type="text/javascript" src="/js/lib/statistics.js"></script> -->
        <script type="text/javascript" src="/js/lib/three.js"></script>
        <script type="text/javascript" src="/js/lib/OrbitControls.js"></script>
        <script type="text/javascript" src="/js/lib/GLTFLoader.js"></script>
        <script type="text/javascript" src="/js/lib/dat.gui.js"></script>
        <style type="text/css">
        .dg {
    /** Clear list styles */
    /* Auto-place container */
    /* Auto-placed GUI's */
    /* Line items that don't contain folders. */
    /** Folder names */
    /** Hides closed items */
    /** Controller row */
    /** Name-half (left) */
    /** Controller-half (right) */
    /** Controller placement */
    /** Shorter number boxes when slider is present. */
    /** Ensure the entire boolean and function row shows a hand */ }
    .dg ul {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    clear: both; }
    .dg.ac {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 0;
    z-index: 0; }
    .dg:not(.ac) .main {
    /** Exclude mains in ac so that we don't hide close button */
    overflow: hidden; }
    .dg.main {
    -webkit-transition: opacity 0.1s linear;
    -o-transition: opacity 0.1s linear;
    -moz-transition: opacity 0.1s linear;
    transition: opacity 0.1s linear; }
    .dg.main.taller-than-window {
      overflow-y: auto; }
      .dg.main.taller-than-window .close-button {
        opacity: 1;
        /* TODO, these are style notes */
        margin-top: -1px;
        border-top: 1px solid #2c2c2c; }
    .dg.main ul.closed .close-button {
      opacity: 1 !important; }
    .dg.main:hover .close-button,
    .dg.main .close-button.drag {
      opacity: 1; }
    .dg.main .close-button {
      /*opacity: 0;*/
      -webkit-transition: opacity 0.1s linear;
      -o-transition: opacity 0.1s linear;
      -moz-transition: opacity 0.1s linear;
      transition: opacity 0.1s linear;
      border: 0;
      position: absolute;
      line-height: 19px;
      height: 20px;
      /* TODO, these are style notes */
      cursor: pointer;
      text-align: center;
      background-color: #000; }
      .dg.main .close-button:hover {
        background-color: #111; }
    .dg.a {
    float: right;
    margin-right: 15px;
    overflow-x: hidden; }
    .dg.a.has-save > ul {
      margin-top: 27px; }
      .dg.a.has-save > ul.closed {
        margin-top: 0; }
    .dg.a .save-row {
      position: fixed;
      top: 0;
      z-index: 1002; }
    .dg li {
    -webkit-transition: height 0.1s ease-out;
    -o-transition: height 0.1s ease-out;
    -moz-transition: height 0.1s ease-out;
    transition: height 0.1s ease-out; }
    .dg li:not(.folder) {
    cursor: auto;
    height: 27px;
    line-height: 27px;
    overflow: hidden;
    padding: 0 4px 0 5px; }
    .dg li.folder {
    padding: 0;
    border-left: 4px solid rgba(0, 0, 0, 0); }
    .dg li.title {
    cursor: pointer;
    margin-left: -4px; }
    .dg .closed li:not(.title),
    .dg .closed ul li,
    .dg .closed ul li > * {
    height: 0;
    overflow: hidden;
    border: 0; }
    .dg .cr {
    clear: both;
    padding-left: 3px;
    height: 27px; }
    .dg .property-name {
    cursor: default;
    float: left;
    clear: left;
    width: 40%;
    overflow: hidden;
    text-overflow: ellipsis; }
    .dg .c {
    float: left;
    width: 60%; }
    .dg .c input[type=text] {
    border: 0;
    margin-top: 4px;
    padding: 3px;
    width: 100%;
    float: right; }
    .dg .has-slider input[type=text] {
    width: 30%;
    /*display: none;*/
    margin-left: 0; }
    .dg .slider {
    float: left;
    width: 66%;
    margin-left: -5px;
    margin-right: 0;
    height: 19px;
    margin-top: 4px; }
    .dg .slider-fg {
    height: 100%; }
    .dg .c input[type=checkbox] {
    margin-top: 9px; }
    .dg .c select {
    margin-top: 5px; }
    .dg .cr.function,
    .dg .cr.function .property-name,
    .dg .cr.function *,
    .dg .cr.boolean,
    .dg .cr.boolean * {
    cursor: pointer; }
    .dg .selector {
    display: none;
    position: absolute;
    margin-left: -9px;
    margin-top: 23px;
    z-index: 10; }
    .dg .c:hover .selector,
    .dg .selector.drag {
    display: block; }
    .dg li.save-row {
    padding: 0; }
    .dg li.save-row .button {
      display: inline-block;
      padding: 0px 6px; }
    .dg.dialogue {
    background-color: #222;
    width: 460px;
    padding: 15px;
    font-size: 13px;
    line-height: 15px; }
    
    /* TODO Separate style and structure */
    #dg-new-constructor {
    padding: 10px;
    color: #222;
    font-family: Monaco, monospace;
    font-size: 10px;
    border: 0;
    resize: none;
    box-shadow: inset 1px 1px 1px #888;
    word-wrap: break-word;
    margin: 12px 0;
    display: block;
    width: 440px;
    overflow-y: scroll;
    height: 100px;
    position: relative; }
    
    #dg-local-explain {
    display: none;
    font-size: 11px;
    line-height: 17px;
    border-radius: 3px;
    background-color: #333;
    padding: 8px;
    margin-top: 10px; }
    #dg-local-explain code {
    font-size: 10px; }
    
    #dat-gui-save-locally {
    display: none; }
    
    /** Main type */
    .dg {
    color: #eee;
    font: 11px 'Lucida Grande', sans-serif;
    text-shadow: 0 -1px 0 #111;
    /** Auto place */
    /* Controller row, 
  • */ /** Controllers */ } .dg.main { /** Scrollbar */ } .dg.main::-webkit-scrollbar { width: 5px; background: #1a1a1a; } .dg.main::-webkit-scrollbar-corner { height: 0; display: none; } .dg.main::-webkit-scrollbar-thumb { border-radius: 5px; background: #676767; } .dg li:not(.folder) { background: #1a1a1a; border-bottom: 1px solid #2c2c2c; } .dg li.save-row { line-height: 25px; background: #dad5cb; border: 0; } .dg li.save-row select { margin-left: 5px; width: 108px; } .dg li.save-row .button { margin-left: 5px; margin-top: 1px; border-radius: 2px; font-size: 9px; line-height: 7px; padding: 4px 4px 5px 4px; background: #c5bdad; color: #fff; text-shadow: 0 1px 0 #b0a58f; box-shadow: 0 -1px 0 #b0a58f; cursor: pointer; } .dg li.save-row .button.gears { background: #c5bdad url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAANCAYAAAB/9ZQ7AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAQJJREFUeNpiYKAU/P//PwGIC/ApCABiBSAW+I8AClAcgKxQ4T9hoMAEUrxx2QSGN6+egDX+/vWT4e7N82AMYoPAx/evwWoYoSYbACX2s7KxCxzcsezDh3evFoDEBYTEEqycggWAzA9AuUSQQgeYPa9fPv6/YWm/Acx5IPb7ty/fw+QZblw67vDs8R0YHyQhgObx+yAJkBqmG5dPPDh1aPOGR/eugW0G4vlIoTIfyFcA+QekhhHJhPdQxbiAIguMBTQZrPD7108M6roWYDFQiIAAv6Aow/1bFwXgis+f2LUAynwoIaNcz8XNx3Dl7MEJUDGQpx9gtQ8YCueB+D26OECAAQDadt7e46D42QAAAABJRU5ErkJggg==) 2px 1px no-repeat; height: 7px; width: 8px; } .dg li.save-row .button:hover { background-color: #bab19e; box-shadow: 0 -1px 0 #b0a58f; } .dg li.folder { border-bottom: 0; } .dg li.title { padding-left: 16px; background: black url(data:image/gif;base64,R0lGODlhBQAFAJEAAPPz8yH5BAEAAAIALAAAAAAFAAUAAAIIlI+hKgFxoCgAOw==) 6px 10px no-repeat; cursor: pointer; border-bottom: 1px solid rgba(255, 255, 255, 0.2); } .dg .closed li.title { background-image: url(data:image/gif;base64,R0lGODlhBQAFAJEAAPPz8yH5BAEAAAIALAAAAAAFAAUAAAIIlGIWqMCbWAEAOw==); } .dg .cr.boolean { border-left: 3px solid #806787; } .dg .cr.function { border-left: 3px solid #e61d5f; } .dg .cr.number { border-left: 3px solid #2fa1d6; } .dg .cr.number input[type=text] { color: #2fa1d6; } .dg .cr.string { border-left: 3px solid #1ed36f; } .dg .cr.string input[type=text] { color: #1ed36f; } .dg .cr.function:hover, .dg .cr.boolean:hover { background: #111; } .dg .c input[type=text] { background: #303030; outline: none; } .dg .c input[type=text]:hover { background: #3c3c3c; } .dg .c input[type=text]:focus { background: #494949; color: #fff; } .dg .c .slider { background: #303030; cursor: ew-resize; } .dg .c .slider-fg { background: #2fa1d6; } .dg .c .slider:hover { background: #3c3c3c; } .dg .c .slider:hover .slider-fg { background: #44abda; } </style> <script type="text/javascript" charset="UTF-8" src="/js/lib/Tween.min.js"></script> <style> body { margin: 0; overflow: hidden; } </style> </head> <body> <div id="dom"></div> <script type="text/javascript"> var camera; var renderer; function init() { // 创建一个场景,它将包含我们所有的元素,如物体,相机和灯光。 var scene = new THREE.Scene(); var textureLoader = new THREE.TextureLoader(); scene.background = textureLoader.load("assets/ba_starry.jpg"); // 创建一个摄像机,它定义了我们正在看的地方 camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000); camera.position.y = 150; // camera.position.z = 90; camera.position.x = 100; camera.lookAt(scene.position); var orbit = new THREE.OrbitControls(camera); // 创建一个渲染器并设置大小,WebGLRenderer将会使用电脑显卡来渲染场景 renderer = new THREE.WebGLRenderer({ antialias: true, logarithmicDepthBuffer: true, }); renderer.setSize(window.innerWidth, window.innerHeight); var ambientLight = new THREE.AmbientLight("#ffffff", 1); scene.add(ambientLight); // 将呈现器的输出添加到HTML元素 document.getElementById("dom").appendChild(renderer.domElement); // 在屏幕上显示坐标轴 var axes = new THREE.AxesHelper(100); // scene.add(axes); // 启动动画 renderScene(); createWeiXing(); createLeiDa(); // 外层对象 const group1 = new THREE.Group(); group1.name = 'group1'; // 设置偏移中心点位置 group1.position.set(0, 0, 6); var cube1 = createTaiYangBan("#00aa00"); group1.add(cube1); cube1.position.set(-4, 0, 0); // 外层对象 const group2 = new THREE.Group(); group2.name = 'group2'; // 设置外层对象的中心为原本想要旋转的位置 group2.position.set(-8, 0, 1); var cube2 = createTaiYangBan("#0055ff"); group2.add(cube2); // 设置偏移中心点位置 cube2.position.set(4, 0, 0); // 外层对象 const group3 = new THREE.Group(); group3.name = 'group3'; // 设置外层对象的中心为原本想要旋转的位置 group3.position.set(8, 0, 1); var cube3 = createTaiYangBan("#ff5500"); group3.add(cube3); // 设置偏移中心点位置 cube3.position.set(-4, 0, 0); group2.add(group3); group1.add(group2); scene.add(group1); // 第二个太阳板 // 外层对象 const group11 = new THREE.Group(); // 设置偏移中心点位置 group11.position.set(0, 0, -4); var cube11 = createTaiYangBan("#00aa00"); group11.add(cube11); cube11.position.set(-4, 0, 0); // 外层对象 const group12 = new THREE.Group(); // 设置外层对象的中心为原本想要旋转的位置 group12.position.set(-8, 0, -1); var cube12 = createTaiYangBan("#0055ff"); group12.add(cube12); // 设置偏移中心点位置 cube12.position.set(4, 0, 0); // 外层对象 const group13 = new THREE.Group(); // 设置外层对象的中心为原本想要旋转的位置 group13.position.set(8, 0, -1); var cube13 = createTaiYangBan("#ff5500"); group13.add(cube13); // 设置偏移中心点位置 cube13.position.set(-4, 0, 0); group12.add(group13); group11.add(group12); scene.add(group11); setTimeout(function() { tweenComplete(); }, 1000); function tweenComplete() { var num1 = 0, num2 = 0, num3 = 0, num11 = 0, num12 = 0, num13 = 0; new TWEEN.Tween({ y1: 0, y2: 0, y3: 0, z: 1, y11: 0, y12: 0, y13: 0, z1: -1, waves: 13, dia: 1, }) .to({ y1: Math.PI / 2, y2: -Math.PI, y3: Math.PI, z: 0, y11: -Math.PI / 2, y12: Math.PI, y13: -Math.PI, z1: 0, waves: 50, dia: 8, }, 3000) .easing(TWEEN.Easing.Linear.None) .onUpdate(function() { group2.position.z = this.z; group3.position.z = this.z; group1.rotateY(this.y1 - num1); group2.rotateY(this.y2 - num2); group3.rotateY(this.y3 - num3); group12.position.z = this.z1; group13.position.z = this.z1; group11.rotateY(this.y11 - num11); group12.rotateY(this.y12 - num12); group13.rotateY(this.y13 - num13); scene.rotateZ(this.y1 - num1); num1 = this.y1; num2 = this.y2; num3 = this.y3; num11 = this.y11; num12 = this.y12; num13 = this.y13; initSatellite(this.waves, this.dia); }) .onComplete(tweenComplete1) .start(); } function tweenComplete1() { var num1 = 0, num2 = 0, num3 = 0, num11 = 0, num12 = 0, num13 = 0; new TWEEN.Tween({ y1: 0, y2: 0, y3: 0, z: 0, y11: 0, y12: 0, y13: 0, z1: 0, waves: 13, dia: 1, }) .to({ y1: -Math.PI / 2, y2: Math.PI, y3: -Math.PI, z: 1, y11: Math.PI / 2, y12: -Math.PI, y13: Math.PI, z1: -1, waves: 50, dia: 8, }, 3000) .easing(TWEEN.Easing.Linear.None) .onUpdate(function() { group2.position.z = this.z; group3.position.z = this.z; group1.rotateY(this.y1 - num1); group2.rotateY(this.y2 - num2); group3.rotateY(this.y3 - num3); group12.position.z = this.z1; group13.position.z = this.z1; group11.rotateY(this.y11 - num11); group12.rotateY(this.y12 - num12); group13.rotateY(this.y13 - num13); scene.rotateY(this.y1 - num1); num1 = this.y1; num2 = this.y2; num3 = this.y3; num11 = this.y11; num12 = this.y12; num13 = this.y13; initSatellite(this.waves, this.dia); }) .onComplete(tweenComplete) .start(); } // 创建一个基础太阳板 function createTaiYangBan(color) { // 创建一个立方体并设置大小 var cubeGeometry = new THREE.BoxGeometry(8, 8, 1); var cubeMaterial = new THREE.MeshBasicMaterial({ color: color, }); var cube = new THREE.Mesh(cubeGeometry, cubeMaterial); return cube; } // 创建一个卫星主体 function createWeiXing() { // 创建一个立方体并设置大小 var wxGeometry = new THREE.CylinderGeometry(5, 5, 20, 100, 0); var wxMaterial = new THREE.MeshBasicMaterial({ color: "#55557f", }); var weixing = new THREE.Mesh(wxGeometry, wxMaterial); weixing.position.set(0, 0, 1); weixing.rotateZ(-Math.PI / 2); scene.add(weixing); } // 创建一个雷达 function createLeiDa() { // 创建一个立方体并设置大小 var wxGeometry = new THREE.CylinderGeometry(4, 0, 5, 100, 0); var wxMaterial = new THREE.MeshBasicMaterial({ color: "#ffaa00", }); var weixing = new THREE.Mesh(wxGeometry, wxMaterial); weixing.position.set(10, 0, 1); weixing.rotateZ(-Math.PI / 2); scene.add(weixing); } // 雷达信号 function initSatellite(positionX, starLiteRadius) { var group = new THREE.Group(); var obj = scene.getObjectByName("satellite"); scene.remove(obj); var wxMaterial = new THREE.MeshBasicMaterial({ color: "#ffffff", side: THREE.DoubleSide }); var signalGeometry1 = new THREE.RingGeometry(starLiteRadius, starLiteRadius + 0.1, 100, 0); var signal1 = new THREE.Mesh(signalGeometry1, wxMaterial); signal1.position.z = -1; var signalGeometry2 = new THREE.RingGeometry(starLiteRadius + 2, starLiteRadius + 2.1, 100, 0); var signal2 = new THREE.Mesh(signalGeometry2, wxMaterial); signal2.position.z = -10; var signalGeometry3 = new THREE.RingGeometry(starLiteRadius + 3, starLiteRadius + 3.1, 100, 0); var signal3 = new THREE.Mesh(signalGeometry3, wxMaterial); signal3.position.z = -20; group.rotateY(-Math.PI / 2); group.position.set(positionX, 0, 1); group.name = "satellite"; group.add(signal1); group.add(signal2); group.add(signal3); scene.add(group); } var clock = new THREE.Clock(); //声明一个时钟对象 function renderScene() { TWEEN.update(); orbit.update(); // 使用requestAnimationFrame函数进行渲染 requestAnimationFrame(renderScene); renderer.render(scene, camera); } // 渲染的场景 renderer.render(scene, camera); } window.onload = init; // 随着窗体的变化修改场景 function onResize() { camera.aspect = window.innerWidth / window.innerHeight; camera.updateProjectionMatrix(); renderer.setSize(window.innerWidth, window.innerHeight); } // 监听窗体调整大小事件 window.addEventListener('resize', onResize, false); </script> </body></html>
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  • 卫星追踪 解析Tle 高度 速度 圈数 发射时长等。
    原理

    1. 基于Cesium构建地球基础元素
    2. 使用Satellite解析Tle计算卫星运动轨迹
    3. 使用算法计算出卫星速度, 高度等
    4. 理论上可以通过逆向编码获取卫星所在的城市

    在这里插入图片描述

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  • 原文地址:https://blog.csdn.net/qq_40794266/article/details/132989219