黑河综合遥感联合试验：阿柔飞行区机载WiDAS数据集（2008年7月7日）

本数据集为机载WiDAS传感器于2008年07月07日获取，地点在阿柔飞行区。
原始数据可见近红外波段成像频率低，受云和云影的影响比较严重，又因为地面缺乏特征点，难以开展自动几何校正。因此面向普通用户发布的是部分经过辐射校正和手工几何校正的Level-2B数据产品和镶嵌图像，可见近红外波段分辨率是1.25m，保存的物理量为Radiance，单位是W/(sr·m^2·nm)，转换公式：DN=Radiance×100000，热红外（TIR）波段保存的物理量为传感器入瞳亮温，单位是：℃ ，转换公式：DN=Brightness_Temperature×100。数据处理时间为20010年2月。原始数据（Level-1A数据）存档，需提交申请并通过审批后才能获得。
本数据集的原始数据包括4条航线。各航线的飞行时间如下表：
{|
! 序号
! 航线名称
! 相对航高
! 开始时间
! 结束时间
! 数据量（景）
! 数据状态
! 数据质量
! 主要地面目标
|-
| 1 || 6#1 || 约1500米 || 13:43:18 || 13:46:26 || 48 || 不完整，未处理 || 部分数据缺失或缺少波段
|-
| 2 || 6#3 || 约1500米 || 13:52:26 || 13:55:18 || 43 || 不完整，部分处理为Level-2B产品 || 部分数据缺失或缺少波段
|-
| 3 || 6#5 || 约1500米 || 13:59:30 || 14:02:38 || 48 || 不完整，部分处理为Level-2B产品 || 部分数据缺失或缺少波段 || 阿柔冻融观测站
|-
| 4 || 6#7 || 约1500米 || 14:08:02 || 14:11:02 || 46 || 不完整，部分处理为Level-2B产品 || 部分数据缺失或缺少波段
|}

This dataset was acquired by the airborne WiDAS sensor on July 7, 2008, at the Arou Flight Area.

The original visible near-infrared (VNIR) band has low imaging frequency and is severely affected by clouds and cloud shadows. Additionally, due to the lack of ground feature points, automatic geometric correction is difficult to perform. Therefore, the products released for general users are partial Level-2B data products and mosaic images that have undergone radiometric correction and manual geometric correction. The spatial resolution of the visible near-infrared band is 1.25 m, and the stored physical quantity is Radiance, with the unit of W/(sr·m²·nm). The conversion formula is: DN = Radiance × 100000. For the thermal infrared (TIR) band, the stored physical quantity is the sensor's at-pupil brightness temperature, with the unit of ℃, and the conversion formula is: DN = Brightness_Temperature × 100. The data processing time was February 2010 (note: the original text mentions 20010, which is likely a typo). The original data (Level-1A data) is archived, and can only be obtained after submitting an application and obtaining approval.

The original dataset includes 4 flight routes. The flight details of each route are listed in the table below:

| No. | Route Name | Relative Flight Altitude | Start Time | End Time | Data Volume (Scenes) | Data Status | Data Quality | Main Ground Targets |
|---|---|---|---|---|---|---|---|---|
| 1 | 6#1 | ~1500 m | 13:43:18 | 13:46:26 | 48 | Incomplete, unprocessed | Partial data missing or bands missing | N/A |
| 2 | 6#3 | ~1500 m | 13:52:26 | 13:55:18 | 43 | Incomplete, partially processed to Level-2B products | Partial data missing or bands missing | N/A |
| 3 | 6#5 | ~1500 m | 13:59:30 | 14:02:38 | 48 | Incomplete, partially processed to Level-2B products | Partial data missing or bands missing | Arou Freeze-Thaw Observation Station |
| 4 | 6#7 | ~1500 m | 14:08:02 | 14:11:02 | 46 | Incomplete, partially processed to Level-2B products | Partial data missing or bands missing | N/A |