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    • 2. 发明授权
    • Earth observation method
    • 地球观测法
    • US5883584A
    • 1999-03-16
    • US65346
    • 1993-05-21
    • Manfred LangemannUwe MallowRudolf BenzHarald Schussler
    • Manfred LangemannUwe MallowRudolf BenzHarald Schussler
    • G01C11/02G08C19/16H04N7/18H04N9/47
    • G01C11/025B64G1/1021
    • Two sensors are carried on board a spacecraft: a first, low resolution "preview" sensor, and a second high resolution "fine sensor", the latter having sensing parameters which can be adjusted to satisfy the needs of a particular customer. The instantaneous field of view of the preview sensor is located at a fixed distance ahead of that of the fine sensor, so that within a predetermined time period, users may decide which partial data are to be transmitted by the fine sensor and under which observation parameters (such as spacial resolution, spectral channels, measuring site, size of the measured area) to their earth station in near real time, still within the course of the actual overflight. Compilation of the specific data requested by the customers takes place on-board the spacecraft upon telecommands by the customers themselves. Sensing of the data requested by the customer is then performed by the fine sensor.
    • 两个传感器载于航天器上:第一个低分辨率“预览”传感器和第二个高分辨率“精细传感器”,后者具有可被调节以满足特定客户需求的感测参数。 预览传感器的瞬时视场位于距离精细传感器的固定距离处,使得在预定时间段内,用户可以确定精细传感器将要发送哪些部分数据,并且在哪个观测参数 (例如空间分辨率,光谱通道,测量位置,测量面积的大小)到实际的地球站,仍然在实际飞越的过程中。 客户自己要求的具体数据汇编在遥控器上的飞船上。 然后由精细传感器执行对客户请求的数据的感测。