ALOS AVNIR-2 Ortho Rectified Image Product
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The ALOS Ortho Rectified Image Product (ALOS-ORI) released by the Japan Aerospace Exploration Agency (JAXA) is open to the public. The ALOS-ORI consists of the AVNIR-2 ORI product compiled from images acquired by the Advanced Land Observing Satellite “DAICHI” (ALOS) operated during the period from 2006 to 2011. NASA, in cooperation with JAXA, makes the dataset available through the ASF DAAC. AVNIR-2 Sensor SummaryObservation BandsBand-1 0.42 - 0.50 µmBand-2 0.52 - 0.60 µmBand-3 0.61 - 0.69 µmBand-4 0.76 - 0.89 µmScanning MethodPush BroomS/N>200MTF>0.2Spatial Resolution10 (at Nadir)Swath Width70km (at Nadir) AVNIR-2 Ortho Rectified Image Product The AVNIR-2 ORI product is created from AVNIR-2 1B1 data after stereo matching with reference to the Panchromatic Remote-Sensing Instrument for Stereo Mapping (PRISM) ORI. AW3D30 DSM data, which is created from a PRISM triplet image, is used for the orthorectification processing. If AW3D30 is missing, SRTM (The Shuttle Radar Topography Mission) DSM data is used.* Please refer to the HDR file in the data file to confirm which DSM is used in ORI product creation. The AVNIR-2 ORI product zip file contains the following files:Band-1 0.42 – 0.50 µm (8bit GeoTIFF)Band-2 0.52 – 0.60 µm (8bit GeoTIFF)Band-3 0.61 – 0.69 µm (8bit GeoTIFF)Band-4 0.76 – 0.89 µm (8bit GeoTIFF)Header file (ASCII text) PlatformALOSSensorAdvanced Visible and Near-Infrared Radiometer (AVNIR)-2Observation Period2006-2011Spatial CoverageGlobalCloud Cover30% or lessResolutionapproximately 10m mesh Please refer to AVNIR-2 Ortho Rectified Image Product Format DescriptionJAXA webpage about ALOS Ortho Rectified Image ProductMore about ALOS from JAXAMore about AVNIR-2 from JAXA
日本宇宙航空研究开发机构(JAXA)发布的 ALOS 正射校正影像产品(ALOS-ORI)对公众开放。该 ALOS-ORI 由 AVNIR-2 正射校正影像产品(AVNIR-2 ORI)构成,该产品系从 2006 年至 2011 年期间运行的先进陆地观测卫星“大地”号(ALOS)获取的影像汇编而成。美国国家航空航天局(NASA)与 JAXA 合作,通过 ASF DAAC 提供该数据集。AVNIR-2 传感器概要观测波段:波段-1 0.42 - 0.50 微米,波段-2 0.52 - 0.60 微米,波段-3 0.61 - 0.69 微米,波段-4 0.76 - 0.89 微米;扫描方法:推帚式;信噪比/S/N>200;调制传递函数/MTF>0.2;空间分辨率:10 米(在视点下方);扫描带宽度:70 公里(在视点下方)。AVNIR-2 正射校正影像产品系由 AVNIR-2 1B1 数据经与 Panchromatic Remote-Sensing Instrument for Stereo Mapping(PRISM)正射校正影像的立体匹配后创建。AW3D30 数字高程模型(DSM)数据,由 PRISM 三重影像生成,用于正射校正处理。如 AW3D30 数据缺失,则使用 SRTM(航天飞机雷达测高任务)DSM 数据。请参照数据文件中的 HDR 文件以确认 ORI 产品创建中使用的 DSM 类型。AVNIR-2 正射校正影像产品 zip 文件包含以下文件:波段-1 0.42 – 0.50 微米(8位 GeoTIFF),波段-2 0.52 – 0.60 微米(8位 GeoTIFF),波段-3 0.61 – 0.69 微米(8位 GeoTIFF),波段-4 0.76 – 0.89 微米(8位 GeoTIFF),头部文件(ASCII 文本)。平台:ALOS;传感器:高级可见光和近红外辐射计(AVNIR-2);观测期:2006-2011;空间覆盖:全球;云覆盖率:30%或更少;分辨率:大约 10 米网格。请参阅 AVNIR-2 正射校正影像产品格式描述、JAXA 关于 ALOS 正射校正影像产品的网页、更多关于 ALOS 的信息以及更多关于 AVNIR-2 的信息。
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