推荐回答(5个)
主要是用来获取军事情报。
侦察卫星利用所载的光电遥感器、雷达或无线电接收机等侦察设备,从轨道上对目标实施侦察、监视或跟踪,以获取地面、海洋或空中目标辐射、反射或发射的电磁波信息,用胶片、磁带等记录器存储于返回舱内;
在地面回收或通过无线电传输方式发送到地面接收站,经过光学、电子设备和计算机加工处理,从中提取有价值的军事情报。
扩展资料
侦查卫星的优点:
1、受限制少:
侦探卫星有超越国境的自由,而没有侵犯领空的纠纷。高山、大海、荒漠戈壁、茂密森林,人无法到达的地方,都阻挡不了卫星去侦察。
2、分析能力强:
侦探卫星拥有先进的超多谱段成像技术。利用几百个窄的频谱通道获得高分辨率,以提高探测伪装和模糊目标的能力。
超多谱段遥感器具有精细的光谱分辨能力,能从获取的遥感数据中直接分析目标的物质成分,从而有效地分辨目标。
参考资料来源:百度百科-侦察卫星
间谍卫星:又称侦察卫星。用于获取军事情报的军用卫星。侦察卫星利用所载的光电遥感器、雷达或无线电接收机等侦察设备,从轨道上对目标实施侦察、监视或跟踪,以获取地面、海洋或空中目标辐射、反射或发射的电磁波信息,用胶片、磁带等记录器存储于返回舱内,在地面回收或通过无线电传输方式发送到地面接收站,经过光学、电子设备和计算机加工处理,从中提取有价值的军事情报。
侦察卫星按任务和设备的不同分为照相侦察卫星、电子侦察卫星、海洋监视卫星、预警卫星和核爆炸探测卫星。侦察卫星具有侦察面积大、范围广,速度快、效果好,可以定期或连续监视,不受国界和地理条件限制等优点。美国和前苏联/俄罗斯等国发射了大量的侦察卫星。
搜集的情报种类可以包含军事与非军事的设施与活动,自然资源分布、运输与使用,或者是气象、海洋、水文等资料的获取。由于如今的领空尚未包含地球周遭的轨道空域,利用卫星搜集情报避免了侵犯领空的纠纷;而且因为操作高度较高,不易受到攻击。
用以获得军事情报的人造卫星。它利用卫星的光、电遥感器或无线电接收机等侦查设备,从轨道上搜集地面、海洋和空中目标的有关信息,对目标实施侦查、监视和跟踪,获取情报。侦查设备收集到的电磁波信息,或由胶卷、磁带等记录储存于返回舱内,在地球上回收:或通过无线电传输方法送到地面接收站进行处理工作,从中获取情报。具有侦查面积大、范围广、速度快、效果好、可长期或连续监视以及不受国界和地理条件限制等优点。根据执行的任务和侦查设备不同,一般分为照相侦查卫星、电子侦查卫星、海洋监控卫星和导弹预警卫星等。
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