tle2文件转czml文件

node_modules/satellite.js/lib/propagation/gstime.js

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+/*!
+ * satellite-js v5.0.0
+ * (c) 2013 Shashwat Kandadai and UCSC
+ * https://github.com/shashwatak/satellite-js
+ * License: MIT
+ */
+
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports["default"] = gstime;
+var _constants = require("../constants");
+var _ext = require("../ext");
+/* -----------------------------------------------------------------------------
+ *
+ *                           function gstime
+ *
+ *  this function finds the greenwich sidereal time.
+ *
+ *  author        : david vallado                  719-573-2600    1 mar 2001
+ *
+ *  inputs          description                    range / units
+ *    jdut1       - julian date in ut1             days from 4713 bc
+ *
+ *  outputs       :
+ *    gstime      - greenwich sidereal time        0 to 2pi rad
+ *
+ *  locals        :
+ *    temp        - temporary variable for doubles   rad
+ *    tut1        - julian centuries from the
+ *                  jan 1, 2000 12 h epoch (ut1)
+ *
+ *  coupling      :
+ *    none
+ *
+ *  references    :
+ *    vallado       2004, 191, eq 3-45
+ * --------------------------------------------------------------------------- */
+function gstimeInternal(jdut1) {
+  var tut1 = (jdut1 - 2451545.0) / 36525.0;
+  var temp = -6.2e-6 * tut1 * tut1 * tut1 + 0.093104 * tut1 * tut1 + (876600.0 * 3600 + 8640184.812866) * tut1 + 67310.54841; // # sec
+  temp = temp * _constants.deg2rad / 240.0 % _constants.twoPi; // 360/86400 = 1/240, to deg, to rad
+
+  //  ------------------------ check quadrants ---------------------
+  if (temp < 0.0) {
+    temp += _constants.twoPi;
+  }
+  return temp;
+}
+function gstime() {
+  if ((arguments.length <= 0 ? undefined : arguments[0]) instanceof Date || arguments.length > 1) {
+    return gstimeInternal(_ext.jday.apply(void 0, arguments));
+  }
+  return gstimeInternal.apply(void 0, arguments);
+}