VIIRS/NPP Day/Night Band Moderate Resolution Terrain-Corrected Geolocation 6-Min L1 Swath 750m NRT

The VIIRS/NPP Day/Night Band Moderate Resolution Terrain-Corrected Geolocation 6-Min L1 Swath 750m Near Real Time (NRT) product, short-name VNP03DNB_NRT includes the geolocation fields that are calculated for VIIRS day-night band (DNB) Line of sight (LOS) for all orbits at the nominal resolution of 750 m. The locations and ancillary information correspond to the intersection of the centers of each Field of View (FOV) from 16 detectors in the DNB on the Earth's surface. A digital terrain model is used to model the Earth's surface. The main inputs are the spacecraft attitude and orbit ephemeris data, the instrument telemetry and the digital elevation model. The geolocation fields contained within the VNP03DNB Geolocation files include geodetic latitude, longitude, surface height above the geoid, solar and lunar zenith and azimuth angles, lunar phase angle and illumination fraction, satellite zenith and azimuth angles, and a land/water mask for each 750m sample. Additional information is included in the header to enable the calculation of the approximate location of the center of the detectors for any of the VIIRS bands. This product is used as input by subsequent VIIRS day/night band products, particularly those produced by the Land team.

本数据集为 VIIRS/NPP 日夜波段中分辨率地形校正地理定位 6 分钟 L1 波段 750 米近实时（NRT）产品，简称 VNP03DNB_NRT，其中包含针对 VIIRS 日夜波段（DNB）视场（LOS）的地理定位字段，该字段计算适用于所有轨道，并以 750 米的标称分辨率进行。所述位置及辅助信息对应于地球表面 16 个 DNB 探测器每个视场中心的交点。地球表面模型通过数字地形模型进行构建。主要输入包括航天器姿态和轨道摄动数据、仪器遥测数据和数字高程模型。VNP03DNB 地理定位文件中包含的地理定位字段包括大地纬度、经度、相对于大地水准面的地表高度、太阳和月亮的仰角与方位角、月亮相位角和照度分数、卫星的仰角与方位角以及每个 750 米样本的陆地/水域掩膜。头部信息中还包括额外信息，以启用计算 VIIRS 各波段中探测器中心的大致位置。该产品作为后续 VIIRS 日夜波段产品的输入，尤其是陆地团队制作的产品。