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<!DOCTYPE html>
Fixed language mark error and updated 404/403 Pages
2023-02-02 15:45:58 +00:00
<html lang="zh">
v1
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<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>计算通信方位角和大圆距离</title>
<!-- Bootstrap -->
<link href="https://cdn.ghink.net/assembly/bootstrap/4.6.1/css/bootstrap.min.css" rel="stylesheet">
<!-- Favicon -->
<link rel="icon" href="https://cdn.ghink.net/image/avatar/Bigsk.png" type="image/png">
<script src="https://cdn.ghink.net/js/vue/2.6.14/vue.min.js"></script>
<script>
function sgn(n) {
if (n > 0) {
return 1;
} else if (n < 0) {
return -1;
} else {
return 0;
}
}
function fndeg(d, m, s) {
return d + sgn(d) * (m / 60 + s/ 3600);
}
function fnacs(x) {
return Math.PI / 2 - 2 * Math.atan(x / (1 + Math.sqrt(1 - x * x)));
}
function calc(tlongd, tlatd, rlongd, rlatd) {
let ro = 6370;
let gcdkm;
let btrd;
let brtd;
let r2d = 180 / Math.PI;
let d2r = Math.PI / 180;
let tlong = tlongd * d2r;
let tlat = tlatd * d2r;
let rlong = rlongd * d2r;
let rlat = rlatd * d2r;
if (tlong < 0) {
tlong = Math.PI * 2 + tlong;
}
if (rlong < 0) {
rlong = Math.PI * 2 + rlong;
}
let dlong = tlong - rlong;
if (Math.abs(dlong) > Math.PI) {
dlong = dlong - Math.PI * 2 * sgn(dlong);
}
let x = Math.sin(tlat) * Math.sin(rlat) + Math.cos(tlat) * Math.cos(rlat) * Math.cos(dlong);
let gcd = fnacs(x);
if (gcd < 0.0000001) {
gcd = 0.0000001;
}
if (Math.cos(tlat) - 0.0000001 <= 0) {
let btr;
if (tlat >= 0) {
btr = 0;
} else {
btr = Math.PI;
}
if (Math.cos(rlat) - 0.0000001 > 0) {
x = (Math.sin(tlat) - Math.sin(rlat) * Math.cos(gcd)) / (Math.cos(rlat) * Math.sin(gcd));
let brt = fnacs(x);
if (dlong < 0) {
brt = Math.PI * 2 - brt;
}
gcdkm = gcd * ro;
btrd = btr * r2d;
brtd = brt * r2d;
} else {
let brt;
if (rlat >= 0) {
brt = 0;
} else {
brt = Math.PI;
}
gcdkm = gcd * ro;
btrd = btr * r2d;
brtd = brt * r2d;
}
} else {
x = (Math.sin(rlat) - Math.sin(tlat) * Math.cos(gcd)) / (Math.cos(tlat) * Math.sin(gcd));
let btr = fnacs(x);
if (dlong > 0) {
btr = Math.PI * 2 - btr;
}
if (Math.cos(rlat) - 0.0000001 > 0) {
x = (Math.sin(tlat) - Math.sin(rlat) * Math.cos(gcd)) / (Math.cos(rlat) * Math.sin(gcd));
let brt = fnacs(x);
if (dlong < 0) {
brt = Math.PI * 2 - brt;
}
gcdkm = gcd * ro;
btrd = btr * r2d;
brtd = brt * r2d;
} else {
let brt;
if (rlat >= 0) {
brt = 0;
} else {
brt = Math.PI;
}
gcdkm = gcd * ro;
btrd = btr * r2d;
brtd = brt * r2d;
}
}
return [gcdkm, btrd, brtd];
}
</script>
</head>
<body>
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<section>
<div class="jumbotron text-center mt-2">
<div class="container">
<div class="row">
<div class="col-12">
<h1>计算通信方位角和大圆距离</h1>
</div>
</div>
</div>
</div>
</section>
<section>
<div class="container">
<div class="row" id="app">
<div class="col-md-1"></div>
<div class="col-md-5">
<form class="form-horizontal" role="form">
<div class="form-inline">
<label><b>发信点经度</b>&nbsp;</label>
<input type="number" class="form-control" v-model="tlongdd" max="180" min="-180" placeholder="度" style="width:70px; height:30px;">&nbsp;度&nbsp;
<input type="number" class="form-control" v-model="tlongdm" max="60" min="-60" placeholder="分" style="width:70px; height:30px;">&nbsp;分&nbsp;
<input type="number" class="form-control" v-model="tlongds" max="60" min="-60" placeholder="秒" style="width:70px; height:30px;">&nbsp;秒&nbsp;
</div>
<div class="form-inline">
<label><b>发信点纬度</b>&nbsp;</label>
<input type="number" class="form-control" v-model="tlatdd" max="90" min="-90" placeholder="度" style="width:70px; height:30px;">&nbsp;度&nbsp;
<input type="number" class="form-control" v-model="tlatdm" max="60" min="-60" placeholder="分" style="width:70px; height:30px;">&nbsp;分&nbsp;
<input type="number" class="form-control" v-model="tlatds" max="60" min="-60" placeholder="秒" style="width:70px; height:30px;">&nbsp;秒&nbsp;
</div>
<div class="form-inline">
<label><b>收信点经度</b>&nbsp;</label>
<input type="number" class="form-control" v-model="rlongdd" max="180" min="-180" placeholder="度" style="width:70px; height:30px;">&nbsp;度&nbsp;
<input type="number" class="form-control" v-model="rlongdm" max="60" min="-60" placeholder="分" style="width:70px; height:30px;">&nbsp;分&nbsp;
<input type="number" class="form-control" v-model="rlongds" max="60" min="-60" placeholder="秒" style="width:70px; height:30px;">&nbsp;秒&nbsp;
</div>
<div class="form-inline">
<label><b>收信点纬度</b>&nbsp;</label>
<input type="number" class="form-control" v-model="rlatdd" max="90" min="-90" placeholder="度" style="width:70px; height:30px;">&nbsp;度&nbsp;
<input type="number" class="form-control" v-model="rlatdm" max="60" min="-60" placeholder="分" style="width:70px; height:30px;">&nbsp;分&nbsp;
<input type="number" class="form-control" v-model="rlatds" max="60" min="-60" placeholder="秒" style="width:70px; height:30px;">&nbsp;秒&nbsp;
</div>
</form>
</div>
<div class="col-md-6">
<h5>计算结果：</h5>
<h5>大圆距离为{{gcdkm}}(km)</h5>
<h5>发信点对收信点的方位角为{{btrdd}}度{{btrdm}}分{{btrds}}秒</h5>
<h5>收信点对发信点的方位角为{{brtdd}}度{{brtdm}}分{{brtds}}秒</h5>
</div>
</div>
<div class="text-center">
<hr>
<h5>算法来源：《业余无线电通信》 童效勇BA1AA 陈方BA4RC 附录18</h5>
<h5>语言翻译：Bigsk (<a href="https://gitea.ghink.net/bigsk/commu_a_c" target="_blank">Git仓库</a>)</h5>
</div>
</div>
</section>
<hr>
<script>
function result(object) {
let tlongd = fndeg(parseInt(object.tlongdd), parseInt(object.tlongdm), parseInt(object.tlongds))
let tlatd = fndeg(parseInt(object.tlatdd), parseInt(object.tlatdm), parseInt(object.tlatds))
let rlongd = fndeg(parseInt(object.rlongdd), parseInt(object.rlongdm), parseInt(object.rlongds))
let rlatd = fndeg(parseInt(object.rlatdd), parseInt(object.rlatdm), parseInt(object.rlatds))
return calc(tlongd, tlatd, rlongd, rlatd)
}
new Vue({
el: '#app',
data: {
tlongdd: 103,
tlongdm: 45,
tlongds: 0,
tlatdd: 36,
tlatdm: 2,
tlatds: 0,
rlongdd: 121,
rlongdm: 29,
rlongds: 0,
rlatdd: 31,
rlatdm: 14,
rlatds: 0
},
computed: {
gcdkm: function () {
return result(this)[0]
},
btrdd: function () {
let d = Math.trunc(result(this)[1])
return d
},
btrdm: function () {
let d = Math.trunc(result(this)[1])
let m = Math.trunc((result(this)[1] - d) * 60)
return m
},
btrds: function () {
let d = Math.trunc(result(this)[1])
let m = Math.trunc((result(this)[1] - d) * 60)
let s = Math.trunc((result(this)[1] - d - m / 60) * 3600)
return s
},
brtdd: function () {
let d = Math.trunc(result(this)[2])
let m = Math.trunc((result(this)[2] - d) * 60)
return d
},
brtdm: function () {
let d = Math.trunc(result(this)[2])
let m = Math.trunc((result(this)[2] - d) * 60)
return m
},
brtds: function () {
let d = Math.trunc(result(this)[2])
let m = Math.trunc((result(this)[2] - d) * 60)
let s = Math.trunc((result(this)[2] - d - m / 60) * 3600)
return s
}
}
})
let date = new Date();
</script>
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<p style="color: #516069"><strong>版权所有 © Ian Xia <script>document.write(date.getFullYear().toString());</script> 保留所有权利</strong></p>
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