From 2006 to 2011, PALSAR’s L-band synthetic aperture radar (SAR) yielded detailed, all-weather, day-and-night observation, as well as repeat-pass interferometry. PALSAR data are from multiple observation modes with variable polarization, resolution, swath width, and off-nadir angle. PALSAR was one of three instruments on the Advanced Land Observing Satellite (ALOS), also known as DAICHI, developed to contribute to the fields of mapping, precise regional land-coverage observation, disaster monitoring, and resource surveying. ALOS was a mission of the Japan Aerospace Exploration Agency (JAXA).(PLR). ScanSAR wide beam (WB1, WB2) operates with a considerable loss of resolution. See table below. Dataset PropertyFine ResolutionFine Resolution, additionalScanSARPolarimetricTemporal Coverage2006-20112006-20112006-20112006-2011Repeat Cycle46 days46 days46 days46 daysSpatial CoverageNorth, Central, and South America – CompleteOutside the Americas – PartialNorth, Central, and South America – CompleteOutside the Americas – PartialNorth, Central, and South America – CompleteOutside the Americas – PartialNorth, Central, and South America – CompleteOutside the Americas – PartialBeam ModeFBS, DSNFBDWB1, WB2PLRCenter FrequencyL-Band (1.27 GHz)L-Band (1.27 GHz)L-Band (1.27 GHz)L-Band (1.27 GHz)PolarizationHH or VVHH+HV or VV+VHHH or VVHH+HV or VV+VHSpatial Resolution10 m20 m100 m30 mSwath Width70 km70 km250-350 km30 kmOff-Nadir Angle34.3° (default)34.3° (default)27.1°(default)21.5° (default)LicenseSee License and Data Citation tabSee License and Data Citation tabSee License and Data Citation tabSee License and Data Citation tabDownload infoData DiscoveryData DiscoveryData DiscoveryData DiscoveryFile formatL1.0,L1.1,L1.5,L2.2,RTC_LOW_RES,RTC_HI_RES,KMZL1.0,L1.1,L1.5,L2.2,RTC_LOW_RES,RTC_HI_RES,KMZL1.0,L1.1,L1.5,L2.2,RTC_LOW_RES,RTC_HI_RES,KMZL1.0,L1.1,L1.5,L2.2,RTC_LOW_RES,RTC_HI_RES,KMZProviderJapan Aerospace Exploration Agency (JAXA).Japan Aerospace Exploration Agency (JAXA).Japan Aerospace Exploration Agency (JAXA).Japan Aerospace Exploration Agency (JAXA).Date published:2006-20112006-20112006-20112006-2011Read more:ALOS-PALSAR on the JAXA Website Showing 1 to 15 of 15 entriesPALSAR cannot observe the areas beyond 87.8 degrees north latitude and 75.9 degrees south latitude when the off-nadir angle is 41.5 degrees. Read more on the JAXA website.
自2006年至2011年,PALSAR的L波段合成孔径雷达(SAR)提供了细致入微、全天候、昼夜交替的观测数据,以及重复过境干涉测量。PALSAR数据源自多种观测模式,具备可变的极化方式、分辨率、扫描宽度以及非视场角。PALSAR是先进陆地观测卫星(ALOS,亦称DAICHI)上的三种仪器之一,旨在为制图、精确区域土地覆盖观测、灾害监测和资源勘探等领域作出贡献。ALOS是日本宇宙航空研究开发机构(JAXA)的使命之一。ScanSAR宽波束(WB1、WB2)在操作过程中会损失相当一部分分辨率。详见下表。数据集属性细分辨率细分辨率,附加PALSAR极化时间跨度2006-20112006-20112006-20112006-2011重复周期46天46天46天46天空间覆盖北美洲、中美洲和南美洲——全面覆盖美洲之外——部分覆盖北美洲、中美洲和南美洲——全面覆盖美洲之外——部分覆盖北美洲、中美洲和南美洲——全面覆盖美洲之外——部分覆盖北美洲、中美洲和南美洲——全面覆盖美洲之外——部分波束模式FBS、DSNFBDWB1、WB2PLRC中心频率L波段(1.27 GHz)L波段(1.27 GHz)L波段(1.27 GHz)L波段(1.27 GHz)极化HH或VVHH+HV或VV+VHHH或VVHH+HV或VV+VHS空间分辨率10米20米100米30米扫描宽度70公里70公里250-350公里30公里非视场角34.3°(默认)34.3°(默认)27.1°(默认)21.5°(默认)许可证详见许可证及数据引用标签详见许可证及数据引用标签详见许可证及数据引用标签详见许可证及数据引用标签下载信息数据发现数据发现数据发现数据发现文件格式L1.0、L1.1、L1.5、L2.2、RTC_LOW_RES、RTC_HI_RES、KMZL1.0、L1.1、L1.5、L2.2、RTC_LOW_RES、RTC_HI_RES、KMZL1.0、L1.1、L1.5、L2.2、RTC_LOW_RES、RTC_HI_RES、KMZL1.0、L1.1、L1.5、L2.2、RTC_LOW_RES、RTC_HI_RES、KMZ提供方日本宇宙航空研究开发机构(JAXA)日本宇宙航空研究开发机构(JAXA)日本宇宙航空研究开发机构(JAXA)日本宇宙航空研究开发机构(JAXA)发布日期:2006-20112006-20112006-20112006-2011更多信息:ALOS-PALSAR在JAXA网站上展示1至15条记录PALSAR在非视场角为41.5度时,无法观测到北纬87.8度以北和南纬75.9度以南的地区。更多信息请参见JAXA网站。