  The Directional Polarimetric Camera (DPC) is the first Chinese multi-angle
polarized earth observation satellite sensor, which has been launched onboard
the GaoFen-5 Satellite in Chinese High-resolution Earth Observation Program.
GaoFen-5 runs in a sun-synchronous orbit with the 2-days revisiting period. DPC
employed a charge coupled device detection unit, and can realize spatial
resolution of 3.3 km under a swath width of 1850 km. Moreover, DPC has 3
polarized channels together with 5 non-polarized bands, and is able to obtain
at least 9 viewing angles by continuously capturing series images over the same
target on orbit. Based on the Directional Polarization Camera (DPC) onboard
GF-5 satellite, the first global high-resolution (3.3 km) map of fine-mode
aerosol optical depth (AODf) over land has been obtained together by Aerospace
Information Institute, Chinese Academy of Sciences, Anhui Institute of Optics
and Fine Mechanics, Chinese Academy of Sciences (the manufacturer of DPC
sensor) and other institutes. This AODf remote sensing observation dataset has
the highest spatial resolution in the world. It can reflect the spatial
information of major air pollutants (PM2.5, etc.) and provide critical basic
products for "decryption" of global haze distribution.
