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Satellite laser altimeter return waveform is sensitive to the vertical canopy structure and the change of underlying ground elevation.It is optimal for mapping forest structure.The return waveform and the processing method are described.The relationship b
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星载激光测高仪的回波信号能够灵敏反映地面植被组成和地表高度的变化,因此能够用于探测森林地貌;首先对星载激光测高仪的森林回波信号及其处理方法进行了介绍,探讨了在不考虑植被聚集情况下,植被组成与回波信号之间的关系;由于植被的聚集效应,例如树叶群集成树冠,会导致植被组成参数与真实值之间存在差异,这需要建立关于三维的空间分布模型加以解决。 |
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Satellite photos from a European Space Agency show in Beijing automobile emissions are the highest in the world, making China the largest smog producer.
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从欧洲太空机构的卫星照片显示，北京的车辆排放量是全世界最高的，使得中国成为中国最大的霾害产生者。 |
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Satellite pictures showed blue-green algae covering about a third of both lakes in the countrys densely populated east, according to the National Satellite Meteorological Center.
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根据国家卫星气象中心的卫星图片显示，蓝藻已覆盖了两大湖的东部地区，约为总面积的1/3。 |
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Satellite radio also sends its signals digitally.
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卫星收音机接收的也是数字信号。 |
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Satellite radio can lead one to develop an insatiable desire for all kinds of unfamiliar music and talk, in the way shortwave radio opened up new worlds for listeners in the past.
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卫星广播可以吸引人们对各类不熟悉的音乐与谈话节目产生贪得无厌的欲望，就如同过去短波收音机为听众打造出全新的世界一样。 |
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Satellite radio signals are broadcast to Earth by powerful transmitters circling in geosynchronous orbit rather than from conventional radio towers on the ground.
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卫星广播讯号是透过同步卫星上的强力发射器传送到地球上，而非利用地面上的传统广播电塔。 |
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Satellite recognition is gradually important in modern wars, and relative techniques have become the study hotspot.
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摘要星载侦察在现代战争中的作用日益显著，对相关技术的研究也成为热点。 |
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Satellite tracking, helicopter surveillance and dart guns failed.
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卫星追踪，直升机监控，麻药标枪都用上了，都失败了。 |
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Satellite transmission, coupled with advancements in cable technology, allowed a wider variety of programming, including channels devoted specifically to news, movies, or sports.
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卫星传送更使有线电视加倍的发展，拥有多姿多彩的节目、包括许多新闻、电影、运动等专门的频道。 |
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Satellites are as vulnerable as they are valuable.
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卫星价值很大但也很脆弱。 |
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Satellites are capable of transmitting not only television broadcasts, but also telephone calls.
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卫星不仅能够传送电视广播,而且能够传送电话. |
