问题描述
文档说，如果给pyEpehm赋予了TLE和时间，它将返回以下内容.但是，我没有运气将返回的"sublat"和"sublon"转换为ECEF XYZ并重新转换为LLA坐标进行验证.当我转换回原样时，经度会保留下来，但对于不同的测试，纬度会偏离约20度.我正在使用已通过GPS星历验证过的功能，并且我非常有信心LLA至ECEF以及适用于这些参数的产品.这里还有其他事情.有人知道"sublat"和"sublon"是否以地心线给出吗?
The documentation says that if pyEpehm is given a TLE and a time it will return the following. However, I'm having no luck converting the returned 'sublat' and 'sublon' to ECEF XYZ and back to LLA coordinates to verify. When I convert back the longitude is preserved but the latitude is off by about ~20 degrees for different tests. I am using functions that are verified with GPS ephemeris and I am very confident that the LLA to ECEF and back works for those parameters. Something else is going on here. Does anybody know if 'sublat' and 'sublon' are given in geocentric??
在人造卫星上，还设置:卫星下方的地理位置:sublat —纬度(+ N)sublong —经度(+ E)海拔—海拔高度(m)范围—观察者到卫星的距离(m)
On artificial satellites, also sets:Geographic point beneath satellite:sublat — Latitude (+N)sublong — Longitude (+E)elevation — Height above sea level (m)range — Distance from observer to satellite (m)
推荐答案
它们在地心坐标中.
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