Synthetic aperture radar (SAR) imaging data in general have not been openly accessible for consumption to the general public in the past few decades, as mainly governments have led the development of such platforms, due to the commercial industry lacking the need of such data (with few exceptions).

中文翻译：

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低地轨道合成孔径雷达公司的开源数据计划：问题与解答[行业概况和活动]

在过去的几十年里，合成孔径雷达（SAR）成像数据总体上尚未公开供公众使用，主要是政府主导了此类平台的开发，因为商业行业缺乏此类数据的需要（除少数例外）。