SARBurstExtraction¶
此应用程序通过仅保留所需突发的行和样本来执行突发提取。
描述¶
Sentinel1 IW SLC产品由每个子条在方位时间上重叠的几个突发组成，由黑线分隔 [1] 。脉冲串提取在于通过仅选择所需脉冲串的行和样本来提取单个脉冲串。
请注意，输出传感器型号会相应更新。对于具有OTB的S1IW SLC产品，这种突发提取是完美的预处理步骤，而不会受到突发分离造成的伪影的影响。输出图像有两种模式可供选择：全像素和仅具有有效像素
参数¶
Input Sentinel1 IW SLC Image -in image Mandatory
Raw Sentinel1 IW SLC image, or any extract of such made by OTB (geom file needed)
Index of Burst -burstindex int Default value: -1
Index for the required Burst (By default -1). If this parameter remains at -1, all bursts will be extracted
Output Image -out image [dtype] Mandatory
The output filename will be used to get the prefix and the extension of this output written's image. For example with outimage.tif asoutput filename, the generated images will had an indice (corresponding at each burst) between the prefix and the extension, such as: outimage_Burst0.tif and outimage_Burst1.tif (if 2 bursts).
Select the modes for output image -allpixels bool Default value: false
If true, all pixels of the current burst are selected.
Available RAM (MB) -ram int Default value: 256
Available memory for processing (in MB).
实例¶
从命令行执行以下操作：
otbcli_SARBurstExtraction -in s1_iw_slc.tif -out s1_iw_slc_burst0.tif
来自Python的评论：
import otbApplication
app = otbApplication.Registry.CreateApplication("SARBurstExtraction")
app.SetParameterString("in", "s1_iw_slc.tif")
app.SetParameterString("out", "s1_iw_slc_burst0.tif")
app.ExecuteAndWriteOutput()
局限性¶
目前仅支持Sentinel1 IW SLC产品。对其他Sentinel1模式或TerrasarX图像的处理不会导致图像和元数据发生变化。来自其他传感器的图像将导致错误。突发提取需要一幅由多个突发组成的图像作为输入。突发必须包含其所有行，才能进行正确的提取。IE：小心投资回报率。