暂时使用星下点坐标作为图像左上角坐标

2024-05-30 18:11:42 +08:00
parent e4d6b35702
commit 8f2b297a02
25 changed files with 1710 additions and 84 deletions
--- a/pkg/calculator/const.go
+++ b/pkg/calculator/const.go
@@ -0,0 +1,10 @@
+package calculator
+
+// WGS84 ellipsoid constants
+const (
+	EarthRadius = 6378137.0         // 地球半径，单位米
+	a           = 6378137.0         // semi-major axis in meters
+	f           = 1 / 298.257223563 // flattening
+	e2          = 2*f - f*f         // square of eccentricity
+	J2000Epoch  = 2451545.0         // Julian date of J2000 epoch
+)