经纬度转换为WGS84坐标系的python程序
时间: 2024-04-30 20:23:19 浏览: 10
以下是将经纬度转换为WGS84坐标系的Python程序:
```python
import math
def convert_to_wgs84(latitude, longitude, altitude):
# WGS84 ellipsoid constants
a = 6378137.0
f = 1 / 298.257223563
# convert latitude and longitude to radians
lat_rad = math.radians(latitude)
lon_rad = math.radians(longitude)
# calculate prime vertical radius of curvature
e2 = f * (2 - f)
N = a / math.sqrt(1 - e2 * math.sin(lat_rad) ** 2)
# calculate x, y, z coordinates
x = (N + altitude) * math.cos(lat_rad) * math.cos(lon_rad)
y = (N + altitude) * math.cos(lat_rad) * math.sin(lon_rad)
z = (N * (1 - e2) + altitude) * math.sin(lat_rad)
# convert to WGS84 coordinates
dx = -0.0000007288
dy = -0.0000000040
dz = 0.0000000024
da = -0.0000000470
db = 0.0000000637
dc = -0.0000000831
x_wgs84 = dx + x * (1 + da) - y * dc + z * db
y_wgs84 = dy + x * dc + y * (1 + db) - z * da
z_wgs84 = dz - x * db + y * da + z * (1 + dc)
# convert back to latitude, longitude, altitude
p = math.sqrt(x_wgs84 ** 2 + y_wgs84 ** 2)
theta = math.atan2(z_wgs84 * a, p * b)
e2_wgs84 = (a ** 2 - b ** 2) / (a ** 2)
latitude_wgs84 = math.atan2(z_wgs84 + e2_wgs84 * b * math.sin(theta) ** 3, p - e2 * a * math.cos(theta) ** 3)
longitude_wgs84 = math.atan2(y_wgs84, x_wgs84)
N_wgs84 = a / math.sqrt(1 - e2_wgs84 * math.sin(latitude_wgs84) ** 2)
altitude_wgs84 = p / math.cos(latitude_wgs84) - N_wgs84
# convert to degrees
latitude_wgs84 = math.degrees(latitude_wgs84)
longitude_wgs84 = math.degrees(longitude_wgs84)
return latitude_wgs84, longitude_wgs84, altitude_wgs84
```
该程序使用WGS84椭球体常数和七个参数的转换过程,将输入的经纬度和海拔高度转换为WGS84坐标系下的经纬度和海拔高度。