For example,the same group of microsatellites could be initially widely spaced to provide worldwide radar coverage,and then within hours moved closer together to conduct finetoothed searches of smaller areas.

• 例如，一组微型卫星原本分散分布以提供全球雷达监测，但在几个小时之内就可以靠拢到一起，对小区域进行更细致的测绘。