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feat: 完善时标与天象几何计算并扩展输出接口

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- 新增时标、ΔT 模型、质心时间与 UT1 支持
- 改进日月食、月掩、行星事件及路径边界计算
- 完善恒星三维自行与动态距离传播
- 扩展 SVG、GeoJSON、KML 输出与底层距离换算工具
- 整理中英文手册、示例资源及回归测试
This commit is contained in:
兔子
2026-09-23 18:55:12 +08:00
parent 1f31a9b5b5
commit 16c62a97d5
503 changed files with 33290 additions and 9471 deletions
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basic/coordinate_topocentric_test.go
+10 -9
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@@ -9,27 +9,28 @@ import (
)
func TestTopocentricRaDecUsesUTJulianDateForSiderealTime(t *testing.T) {
ut := Date2JDE(time.Date(2025, 6, 5, 12, 2, 7, 700000000, time.UTC))
ut := Date2JD(time.Date(2025, 6, 5, 12, 2, 7, 700000000, time.UTC))
ra := 189.527817246
dec := -5.973400893
lat := 6.79657
lon := 121.55381
distanceAU := HMoonAwayN(TD2UT(ut, true), -1) / 149597870.7
distanceAU := HMoonAwayN(UTC2TT(ut), -1) / 149597870.7
gotRA, gotDec := TopocentricRaDec(ra, dec, lat, lon, ut, distanceAU, 0)
wantRA, wantDec := independentTopocentricRaDec(ra, dec, lat, lon, ut, distanceAU, 0)
if delta := angularDistanceArcsec(gotRA, gotDec, wantRA, wantDec); delta > 1e-6 {
t.Fatalf("TopocentricRaDec differs from independent formula by %.9f arcsec", delta)
// 逐分量比较：零距离处 acos 度规的病态下限会把 1 ulp 放大成毫角秒。
if deltaRA, deltaDec := math.Abs(gotRA-wantRA), math.Abs(gotDec-wantDec); deltaRA > 1e-12 || deltaDec > 1e-12 {
t.Fatalf("TopocentricRaDec differs from independent formula: dRA=%.3g dDec=%.3g deg", deltaRA, deltaDec)
}
}
func TestTopocentricRaAndDecMatchCombinedResult(t *testing.T) {
ut := Date2JDE(time.Date(2025, 6, 5, 12, 2, 7, 700000000, time.UTC))
ut := Date2JD(time.Date(2025, 6, 5, 12, 2, 7, 700000000, time.UTC))
ra := 189.527817246
dec := -5.973400893
lat := 6.79657
lon := 121.55381
distanceAU := HMoonAwayN(TD2UT(ut, true), -1) / 149597870.7
distanceAU := HMoonAwayN(UTC2TT(ut), -1) / 149597870.7
wantRA, wantDec := TopocentricRaDec(ra, dec, lat, lon, ut, distanceAU, 0)
if got := TopocentricRa(ra, dec, lat, lon, ut, distanceAU, 0); got != wantRA {
@@ -41,11 +42,11 @@ func TestTopocentricRaAndDecMatchCombinedResult(t *testing.T) {
}
func TestHMoonHeightUsesUTForTopocentricCorrection(t *testing.T) {
ut := Date2JDE(time.Date(2026, 4, 28, 16, 1, 30, 0, time.UTC))
ut := Date2JD(time.Date(2026, 4, 28, 16, 1, 30, 0, time.UTC))
longitude := 0.0
latitude := 51.4779
ra, dec := HMoonApparentRaDecN(ut, longitude, latitude, 0, -1)
hourAngle := Limit360(ApparentSiderealTime(ut)*15 + longitude - ra)
hourAngle := Limit360(ApparentSiderealTime(UTC2UT1(ut))*15 + longitude - ra)
want := ArcSin(Sin(latitude)*Sin(dec) + Cos(dec)*Cos(latitude)*Cos(hourAngle))
got := HMoonHeightN(ut, longitude, latitude, 0, -1)
if difference := math.Abs(got - want); difference > 1e-10 {
@@ -62,7 +63,7 @@ func independentTopocentricRaDec(ra, dec, lat, lon, ut, distanceAU, height float
rhoCos := math.Cos(u) + height/6378140.0*Cos(lat)
rhoSin := polarRadiusKM/equatorialRadiusKM*math.Sin(u) + height/6378140.0*Sin(lat)
sinParallax := Sin(0.0024427777777) / distanceAU
hourAngle := Limit360(ApparentSiderealTime(ut)*15 + lon - ra)
hourAngle := Limit360(ApparentSiderealTime(UTC2UT1(ut))*15 + lon - ra)
deltaRA := math.Atan2(
-rhoCos*sinParallax*Sin(hourAngle),
Cos(dec)-rhoCos*sinParallax*Cos(hourAngle),