Interferometric synthetic-aperture radar (InSAR)
Interferometric synthetic-aperture radar (InSAR)
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DOI：
10.1007/978-3-540-49302-0_5
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发表时间：
2006-01-01
期刊：
影响因子：
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通讯作者：
Lu, Zhong
中科院分区：
文献类型：
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作者：
Dzurisin, Daniel;Lu, Zhong
大地测量学家大多数都是耐心和勤奋的人。花一天时间徒步旅行到遥远的山峰，花几个小时等待云层清除观测点之间的视线，花几个星期沿着水平线有条不紊地移动-这是大地测量专业的正常脉搏。这种劳动的成果由于如此稀缺而显得更加珍贵。使用电子测距仪（EDM）或水平仪的好日子通常产生不到十几个数据点。一年的倾斜仪输出以10分钟为间隔进行采样，构成的数据不到半兆字节。在黄石火山口收集的所有水准测量数据都可以轻松地存储在一张PC磁盘上！这些数量是微不足道的现代数据存储标准，尽管花费了相当大的努力来生产它们。
Geodesists are, for the most part, a patient and hardworking lot. A day spent hiking to a distant peak, hours spent waiting for clouds to clear a line-of-sight between observation points, weeks spent moving methodically along a level line — such is the normal pulse of the geodetic profession. The fruits of such labors are all the more precious because they are so scarce. A good day spent with an electronic distance meter (EDM) or level typically produces fewer than a dozen data points. A year of tiltmeter output sampled at ten-minute intervals constitutes less than half a megabyte of data. All of the leveling data ever collected at Yellowstone Caldera fit comfortably on a single PC diskette! These quantities are trivial by modern datastorage standards, in spite of the considerable efforts expended to produce them.