lankun/sjy01-image-proc
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

使用定姿四元数计算图像位置

Browse Source
This commit is contained in:
nuknal
2024-06-07 10:51:20 +08:00
parent f7c4237c77
commit cf5012f2a8
8 changed files with 192 additions and 82 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
pkg/calculator/j2000.go
View File

@@ -7,6 +7,13 @@ import (
// Function to convert current J2000 position to WGS84
func J2000ToWGS84(j2000X, j2000Y, j2000Z float64, utc time.Time) (float64, float64, float64) {
itrsX, itrsY, itrsZ := ECItoECEF(j2000X, j2000Y, j2000Z, utc)
// Convert ITRS to geodetic coordinates (WGS84)
latitude, longitude, height := ECEFToGeodetic(itrsX, itrsY, itrsZ)
return latitude, longitude, height
}
func ECItoECEF(j2000X, j2000Y, j2000Z float64, utc time.Time) (float64, float64, float64) {
julianDate := UTCToJulianDate(utc)
gast := CalculateGAST(julianDate, utc)
@@ -18,9 +25,7 @@ func J2000ToWGS84(j2000X, j2000Y, j2000Z float64, utc time.Time) (float64, float
itrsY := rotationMatrix[1][0]*j2000X + rotationMatrix[1][1]*j2000Y + rotationMatrix[1][2]*j2000Z
itrsZ := rotationMatrix[2][0]*j2000X + rotationMatrix[2][1]*j2000Y + rotationMatrix[2][2]*j2000Z
// Convert ITRS to geodetic coordinates (WGS84)
latitude, longitude, height := ECEFToGeodetic(itrsX, itrsY, itrsZ)
return latitude, longitude, height
return itrsX, itrsY, itrsZ
}
// Function to convert UTC to Julian Date