PAZ Full Archive and New Tasking

PAZ Image Products can be acquired in 8 image modes with flexible resolutions (from 1 m to 40 m) and scene sizes. Thanks to different polarimetric combinations and processing levels the delivered imagery can be tailored specifically to meet the requirements of the application. Available modes are: • StripMap mode (SM) in single and dual polarisation: The ground swath is illuminated with a continuous train of pulses while the antenna beam is pointed to a fixed angle, both in elevation and in azimuth. • ScanSAR mode (SC) in single polarisation: the swath width is increased respecting to the StripMap mode, it is composed of four different sub-swaths, which are obtained by antenna steering in elevation direction. • Wide ScanSAR mode (WS), in single polarisation: the usage of six sub-swaths allows to obtain a higher swath coverage product. • Spotlight modes: in single and dual polarisation: Spotlight modes take advantage of the beam steering capability in the azimuth plane to illuminate for a longer time the area of interest: a sensible improvement of the azimuth resolution is achieved at the expense of a shorter scene size. Spotlight mode (SL) is designed to maximise the azimuth scene extension at the expense of the spatial resolution, and High Resolution Spotlight mode (HS) is designed to maximize the spatial resolutions at the expense of the scene extension. • Staring Spotlight mode (ST), in single polarisation: The virtual rotation point coincides with the center of the beam: the image length in the flight direction is constrained by the projection on- ground of the azimuth beamwidth and it leads to a target azimuth illumination time increment and to achieve the best azimuth resolution. There are two main classes of products: • Spatially Enhanced products (SE): designed with the target of maximize the spatial resolution in pixels with squared size, so the larger resolution value of azimuth or ground range determines the square pixel size, and the smaller resolution value is adjusted to this size and the corresponding reduction of the bandwidth is used for speckle reduction. • Radiometrically Enhanced products (RE): designed with the target of maximize the radiometry, so the range and azimuth resolutions are intentionally decreased to significantly reduce speckle by averaging several looks. The following geometric projections are offered: • Single Look Slant Range Complex (SSC): single look product of the focused radar signal: the pixels are spaced equidistant in azimuth and in slant range. No geocoding is available, no radiometric artifacts included. Product delivered in the DLR-defined binary COSAR format. The SSC product is intended for applications that require the full bandwidth and phase information, e.g. for SAR interferometry and polarimetry. • Multi Look Ground Range Detected (MGD): detected multi look product in GeoTiff format with reduced speckle and approximately square resolution cells on ground. The image coordinates are oriented along flight direction and along ground range; the pixel spacing is equidistant in azimuth and in ground range. A simple polynomial slant to ground projection is performed in range using a WGS84 ellipsoid and an average, constant terrain height parameter. No image rotation to a map coordinate system is performed and interpolation artifacts are thus avoided. • Geocoded Ellipsoid Corrected (GEC): multi look detected product in GeoTiff format. It is projected and re-sampled to the WGS84 reference ellipsoid assuming one average terrain height. No terrain correction performed. UTM is the standard projection, for polar regions UPS is applied. • Enhanced Ellipsoid Corrected (EEC): multi look detected product in GeoTiff format. It is projected and re-sampled to the WGS84 reference ellipsoid. The image distortions caused by varying terrain height are corrected using an external DEM; therefore the pixel localization in these products is highly accurate. UTM is the standard projection, for polar regions UPS is applied. StripMap Single Mode ID: SM-S Polarizations: HH, VV, HV, VH Scene size (Range x Azimuth) [km]: 30 x 50 Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] 2.99 - 3.52 at (45° - 20°) - MGD, GEC, EEC (RE)[Ground range] 6.53 - 7.65 at (45° - 20°) - SSC[Slant range] 1.1 (150 MHz bandwidth) 1.7 (100 MHz bandwidth) Azimuth Resolution [m]: - MGD, GEC, EEC (SE) 3.05 - MGD, GEC, EEC (RE) 6.53 - 7.60 at (45° - 20°) - SSC 3.01 StripMap Dual Mode ID: SM-D Polarizations: HH/VV, HH/HV, VV/VH Scene size (Range x Azimuth) [km]: 15 x 50 Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] 6 - MGD, GEC, EEC (RE)[Ground range] 7.51 - 10.43 at (45° - 20°) - SSC[Slant range] 1.18 Azimuth Resolution [m]: - MGD, GEC, EEC (SE) 6.11 - MGD, GEC, EEC (RE) 7.52 - 10.4 at (45° - 20°) - SSC ScanSAR Mode ID: SC Polarizations: HH, VV, HV, VH Scene size (Range x Azimuth) [km]: 100 x 150 Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] N/A - MGD, GEC, EEC (RE)[Ground range] 16.79 - 18.19 at (45° - 20°) - SSC[Slant range] 1.17 - 3.4 (depending on range bandwidth) Azimuth Resolution [m]: - MGD, GEC, EEC (SE) N/A - MGD, GEC, EEC (RE) 17.66 - 18.18 at (45° - 20°) - SSC 18.5 Wide ScanSAR Mode ID: WS Polarizations: HH, VV, HV, VH Scene size (Range x Azimuth) [km]: [273-196] x 208 Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] N/A - MGD, GEC, EEC (RE)[Ground range] 35 - SSC[Slant range] 1.75 - 3.18 (depending on range bandwidth) Azimuth Resolution [m]: - MGD, GEC, EEC (SE) N/A - MGD, GEC, EEC (RE) 39 - SSC 38.27 Spotlight Single Mode ID: SL-S Polarizations: HH, VV, HV, VH Scene size (Range x Azimuth) [km]: 10 x 10 Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] 1.55 - 3.43 at (55° - 20°) - MGD, GEC, EEC (RE)[Ground range] 3.51 - 5.43 at (55° - 20°) - SSC[Slant range] 1.18 Azimuth Resolution [m]: - MGD, GEC, EEC (SE) 1.56 - 2.9 at (55° - 20°) - MGD, GEC, EEC (RE) 3.51 - 5.4 at (55° - 20°) - SSC 1.46 Spotlight Dual Mode ID: SL-D Polarizations: HH/VV, HH/HV, VV/VH Scene size (Range x Azimuth) [km]: 10 x 10 Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] 3.09 - 3.5 at (55° - 20°) - MGD, GEC, EEC (RE)[Ground range] 4.98 - 7.63 at (55° - 20°) - SSC[Slant range] 1.17 Azimuth Resolution [m]: - MGD, GEC, EEC (SE) 3.53 - MGD, GEC, EEC (RE) 4.99 - 7.64 at (55° - 20°) - SSC 3.1 HR Spotlight Single Mode ID: HS-S Polarizations: HH, VV, HV, VH Scene size (Range x Azimuth) [km]: 10-6 x 5 (depending on incident angle) Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] 1 - 1.76 at (55° - 20°) - MGD, GEC, EEC (RE)[Ground range] 2.83 - 3.11 at (55° - 20°) - SSC[Slant range] 0.6 Azimuth Resolution [m]: - MGD, GEC, EEC (SE) 1 - 1.49 at (55 °- 20°) - MGD, GEC, EEC (RE) 2.83 - 3.13 at (55° - 20°) - SSC 1.05 HR Spotlight Dual Mode ID: HS-D Polarizations: HH/VV, HH/HV, VV/VH Scene size (Range x Azimuth) [km]: 10 x 5 Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] 2 - 3.5 at (55° - 20°) - MGD, GEC, EEC (RE)[Ground range] 4 - 6.2 at (55° - 20°) - SSC[Slant range] 1.17 Azimuth Resolution [m]: - MGD, GEC, EEC (SE) 2.38 - 2.93 at (55° - 20°) - MGD, GEC, EEC (RE) 4 - 6.25 at (55° - 20°) - SSC 2.16 Staring Spotlight Mode ID: ST Polarizations: HH, VV, HV, VH Scene size (Range x Azimuth) [km]: [9-4.6] x [2.7-3.6] Range Resolution [m]: - MGD, GEC, EEC (SE)[Ground range] 0.96 - 1.78 at (45°- 20°) - MGD, GEC, EEC (RE)[Ground range] 0.97 - 1.78 at (45°-20°) - SSC[Slant range] 0.59 Azimuth Resolution [m]: - MGD, GEC, EEC (SE) 0.38 - 0.7 at (45°-20°) - MGD, GEC, EEC (RE) 0.97 - 1.42 at (45°-20°) - SSC 0.22 All details about the data provision, data access conditions and quota assignment procedure are described into the Terms of Applicability available in Resources section. For archive data, the user is invited to search PAZ products by using the USP (User Service Provider) web portal (http://www.geos.hisdesat.es/) (self registration required) in order to verify the availability over the Area of Interest in the Time of Interest.

PAZ影像产品可通过八种图像模式获取，分辨率灵活（从1米至40米不等），并支持多种场景尺寸。得益于不同的极化组合和处理级别，所提供的图像可根据具体应用需求进行定制。可供选择的模式包括：
• 条带模式（SM）的单极化和双极化：在地面条带被连续脉冲光照射的同时，天线波束指向固定角度，既包括仰角也包括方位角。
• 扫描合成孔径雷达模式（SC）的单极化：相对于条带模式，条带宽度增加，由四个不同的子条带组成，这些子条带通过天线在仰角方向的转向获得。
• 宽扫描合成孔径雷达模式（WS），单极化：使用六个子条带，可获得更高的条带覆盖率产品。
• 聚焦模式：单极化和双极化：聚焦模式利用方位平面内的波束转向能力，对感兴趣区域进行长时间照射：通过牺牲场景尺寸，实现了方位分辨率的显著提升。聚焦模式（SL）旨在最大限度地扩展方位场景，牺牲空间分辨率；而高分辨率聚焦模式（HS）则旨在最大限度地提高空间分辨率，牺牲场景扩展。
• 盯视聚焦模式（ST），单极化：虚拟旋转点与波束中心重合：飞行方向上的图像长度受方位波束宽度的地面投影所限制，导致目标方位照射时间增加，并实现最佳方位分辨率。
存在两种主要的产品类别：
• 空间增强产品（SE）：旨在最大化像素平方尺寸下的空间分辨率，因此方位或地面距离分辨率的大值决定了像素大小，小分辨率值则调整为相应大小，并使用相应的带宽减少来降低斑点。
• 辐射增强产品（RE）：旨在最大化辐射度，因此有意降低范围和方位分辨率，以通过平均多个视次来显著减少斑点。
提供的几何投影包括：
• 单视斜距复数（SSC）：聚焦雷达信号的单视产品：像素在方位和斜距方向上等距分布。无地理编码，不含辐射学伪影。产品以DLR定义的二进制COSAR格式提供。SSC产品适用于需要完整带宽和相位信息的应用，例如SAR干涉测量和极化测量。
• 多视地面距离检测（MGD）：GeoTiff格式的检测多视产品，斑点减少，地面分辨率细胞近似为正方形。图像坐标沿飞行方向和地面距离方向排列；像素在方位和地面距离方向上等距分布。在距离方向上执行简单的多项式斜距到地面的投影，使用WGS84椭球体和平均、恒定的地形高度参数。不执行图像到地图坐标系的旋转，从而避免了插值伪影。
• 地理编码椭球体校正（GEC）：GeoTiff格式的多视检测产品。它投影并重采样到WGS84参考椭球体，假设平均地形高度。不执行地形校正。
• 增强椭球体校正（EEC）：GeoTiff格式的多视检测产品。它投影并重采样到WGS84参考椭球体。使用外部DEM校正由变化的地形高度引起的图像畸变；因此，这些产品中的像素定位非常精确。
条带模式单极化模式ID：SM-S 极化：HH，VV，HV，VH 场景尺寸（距离 x 方位）[公里]：30 x 50 距离分辨率[米]：- MGD，GEC，EEC（SE）[地面距离] 2.99 - 3.52 在（45° - 20°）- MGD，GEC，EEC（RE）[地面距离] 6.53 - 7.65 在（45° - 20°）- SSC[斜距] 1.1（150 MHz带宽）1.7（100 MHz带宽）方位分辨率[米]：- MGD，GEC，EEC（SE）3.05- MGD，GEC，EEC（RE）6.53 - 7.60 在（45° - 20°）- SSC 3.01 条带模式双极化模式ID：SM-D 极化：HH/VV，HH/HV，VV/VH 场景尺寸（距离 x 方位）[公里]：15 x 50 距离分辨率[米]：- MGD，GEC，EEC（SE）6 - MGD，GEC，EEC（RE）7.51 - 10.43 在（45° - 20°）- SSC[斜距] 1.18 方位分辨率[米]：- MGD，GEC，EEC（SE）6.11 - MGD，GEC，EEC（RE）7.52 - 10.4 在（45° - 20°）- SSC 1.18 扫描合成孔径雷达模式ID：SC 极化：HH，VV，HV，VH 场景尺寸（距离 x 方位）[公里]：100 x 150 距离分辨率[米]：- MGD，GEC，EEC（SE）N/A - MGD，GEC，EEC（RE）[地面距离] 16.79 - 18.19 在（45° - 20°）- SSC[斜距] 1.17 - 3.4（取决于距离带宽）方位分辨率[米]：- MGD，GEC，EEC（SE）N/A - MGD，GEC，EEC（RE）17.66 - 18.18 在（45° - 20°）- SSC 18.5 宽扫描合成孔径雷达模式ID：WS 极化：HH，VV，HV，VH 场景尺寸（距离 x 方位）[公里]：[273-196] x 208 距离分辨率[米]：- MGD，GEC，EEC（SE）N/A - MGD，GEC，EEC（RE）[地面距离] 35 - SSC[斜距] 1.75 - 3.18（取决于距离带宽）方位分辨率[米]：- MGD，GEC，EEC（SE）N/A - MGD，GEC，EEC（RE）39 - SSC 38.27 聚焦单极化模式ID：SL-S 极化：HH，VV，HV，VH 场景尺寸（距离 x 方位）[公里]：10 x 10 距离分辨率[米]：- MGD，GEC，EEC（SE）[地面距离] 1.55 - 3.43 在（55° - 20°）- MGD，GEC，EEC（RE）[地面距离] 3.51 - 5.43 在（55° - 20°）- SSC[斜距] 1.18 方位分辨率[米]：- MGD，GEC，EEC（SE）1.56 - 2.9 在（55° - 20°）- MGD，GEC，EEC（RE）3.51 - 5.4 在（55° - 20°）- SSC 1.46 聚焦双极化模式ID：SL-D 极化：HH/VV，HH/HV，VV/VH 场景尺寸（距离 x 方位）[公里]：10 x 10 距离分辨率[米]：- MGD，GEC，EEC（SE）[地面距离] 3.09 - 3.5 在（55° - 20°）- MGD，GEC，EEC（RE）[地面距离] 4.98 - 7.63 在（55° - 20°）- SSC[斜距] 1.17 方位分辨率[米]：- MGD，GEC，EEC（SE）3.53 - MGD，GEC，EEC（RE）4.99 - 7.64 在（55° - 20°）- SSC 3.1 高分辨率聚焦单极化模式ID：HS-S 极化：HH，VV，HV，VH 场景尺寸（距离 x 方位）[公里]：10-6 x 5（取决于入射角）距离分辨率[米]：- MGD，GEC，EEC（SE）[地面距离] 1 - 1.76 在（55° - 20°）- MGD，GEC，EEC（RE）[地面距离] 2.83 - 3.11 在（55° - 20°）- SSC[斜距] 0.6 方位分辨率[米]：- MGD，GEC，EEC（SE）1 - 1.49 在（55 °- 20°）- MGD，GEC，EEC（RE）2.83 - 3.13 在（55° - 20°）- SSC 1.05 高分辨率聚焦双极化模式ID：HS-D 极化：HH/VV，HH/HV，VV/VH 场景尺寸（距离 x 方位）[公里]：10 x 5 距离分辨率[米]：- MGD，GEC，EEC（SE）[地面距离] 2 - 3.5 在（55° - 20°）- MGD，GEC，EEC（RE）[地面距离] 4 - 6.2 在（55° - 20°）- SSC[斜距] 1.17 方位分辨率[米]：- MGD，GEC，EEC（SE）2.38 - 2.93 在（55° - 20°）- MGD，GEC，EEC（RE）4 - 6.25 在（55° - 20°）- SSC 2.16 盯视聚焦模式ID：ST 极化：HH，VV，HV，VH 场景尺寸（距离 x 方位）[公里]：[9-4.6] x [2.7-3.6] 距离分辨率[米]：- MGD，GEC，EEC（SE）[地面距离] 0.96 - 1.78 在（45°- 20°）- MGD，GEC，EEC（RE）[地面距离] 0.97 - 1.78 在（45°-20°）- SSC[斜距] 0.59 方位分辨率[米]：- MGD，GEC，EEC（SE）0.38 - 0.7 在（45°-20°）- MGD，GEC，EEC（RE）0.97 - 1.42 在（45°-20°）- SSC 0.22
所有有关数据提供、数据访问条件和配额分配程序的信息，均在“适用条款”中详细描述，该条款可在资源部分找到。对于存档数据，用户被邀请使用USP（用户服务提供商）网络门户（http://www.geos.hisdesat.es/）（需自行注册）搜索PAZ产品，以验证在感兴趣区域和时间点的可用性。