relative azimuth angle derivations
- relative azimuth angle from sensor and solar azimuth angle - symbol - description - unit - variable name - \(\varphi_{0}\) - solar azimuth angle - \(deg\) - solar_azimuth_angle {:} - \(\varphi_{r}\) - relative azimuth angle - \(deg\) - relative_azimuth_angle {:} - \(\varphi_{S}\) - sensor azimuth angle - \(deg\) - sensor_azimuth_angle {:} - The pattern : for the dimensions can represent {time}, or no dimensions at all. \begin{eqnarray} \Delta\varphi & = & \varphi_{0} - \varphi_{S} \\ \Delta\varphi & = & \begin{cases} \Delta\varphi \geq 360, & \Delta\varphi - 360 \\ 0 \leq \Delta\varphi < 360, & \Delta\varphi \\ \Delta\varphi < 0, & \Delta\varphi + 360 \end{cases} \\ \varphi_{r} & = & \left|\Delta\varphi - 180 \right| \end{eqnarray}