pyPPPETM.py 文件源码

def ct2lg(dX, dY, dZ, lat, lon):

    n = dX.size
    R = np.zeros((3, 3, n))

    R[0, 0, :] = -np.multiply(np.sin(np.deg2rad(lat)), np.cos(np.deg2rad(lon)))
    R[0, 1, :] = -np.multiply(np.sin(np.deg2rad(lat)), np.sin(np.deg2rad(lon)))
    R[0, 2, :] = np.cos(np.deg2rad(lat))
    R[1, 0, :] = -np.sin(np.deg2rad(lon))
    R[1, 1, :] = np.cos(np.deg2rad(lon))
    R[1, 2, :] = np.zeros((1, n))
    R[2, 0, :] = np.multiply(np.cos(np.deg2rad(lat)), np.cos(np.deg2rad(lon)))
    R[2, 1, :] = np.multiply(np.cos(np.deg2rad(lat)), np.sin(np.deg2rad(lon)))
    R[2, 2, :] = np.sin(np.deg2rad(lat))

    dxdydz = np.column_stack((np.column_stack((dX, dY)), dZ))

    RR = np.reshape(R[0, :, :], (3, n))
    dx = np.sum(np.multiply(RR, dxdydz.transpose()), axis=0)
    RR = np.reshape(R[1, :, :], (3, n))
    dy = np.sum(np.multiply(RR, dxdydz.transpose()), axis=0)
    RR = np.reshape(R[2, :, :], (3, n))
    dz = np.sum(np.multiply(RR, dxdydz.transpose()), axis=0)

    return dx, dy, dz