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There are various uses of modern small satellites as well as many inimitable advantages.
In the civil context， it can be applied in various fields including communication， remote sensing， scientific research and military， and apply to test new technologies， easily composing a constellation of satellites in different orbits hence achieving functions that cannot be realized by a single one. Among them， using small communications satellites to achieve global mobile personal communications has become an important mode of current development of communication； constellation of multiple small remote sensing satellites can achieve both high spatial resolution and high temporal resolution at the same time.
In military applications， the small satellite also plays an important role. Military small satellites have the characteristic of rapid development， fast launch， timely use， etc.， and thus meet the special requirements of wartime.
（Answerer： PANG Zhihao）
In the civil context， it can be applied in various fields including communication， remote sensing， scientific research and military， and apply to test new technologies， easily composing a constellation of satellites in different orbits hence achieving functions that cannot be realized by a single one. Among them， using small communications satellites to achieve global mobile personal communications has become an important mode of current development of communication； constellation of multiple small remote sensing satellites can achieve both high spatial resolution and high temporal resolution at the same time.
In military applications， the small satellite also plays an important role. Military small satellites have the characteristic of rapid development， fast launch， timely use， etc.， and thus meet the special requirements of wartime.
（Answerer： PANG Zhihao）