Obtaining Satellite Image Observation Viewing Angle and Albedo Conversion
Posted: Tue Jun 24, 2025 4:23 am America/New_York
I am currently engaged in an endeavor to convert the L2A reflectance images of EMIT into albedo (hemispherical reflectance, to be precise). To achieve this conversion, I intend to utilize the BRDF function. In this process, I require the sensor viewing angle and the zenith angle.
However, I have noticed that the L2A data does not provide information regarding the sensor viewing angle and the zenith angle. While I contemplate the possibility of calculating the zenith angle based on the ___location and time, I am uncertain about where to obtain the sensor viewing angle. I'm wondering if it could be assumed to be perpendicular to the Earth's surface? I have thoroughly studied the algorithm documentation but have found no relevant records.
In addition to this, I am curious to know if EMIT has any plans to develop albedo products.
However, I have noticed that the L2A data does not provide information regarding the sensor viewing angle and the zenith angle. While I contemplate the possibility of calculating the zenith angle based on the ___location and time, I am uncertain about where to obtain the sensor viewing angle. I'm wondering if it could be assumed to be perpendicular to the Earth's surface? I have thoroughly studied the algorithm documentation but have found no relevant records.
In addition to this, I am curious to know if EMIT has any plans to develop albedo products.