The surface matching for change detection without control points is inherently very difficult problem, and has potential application for multi-temporal DEM analyses.
不借助控制点匹配表面来探测表面差异是一个非常困难的问题，在多时相dem分析中具有非常广阔的应用前景。
This paper introduces cause of formation of MAI in CDMA systems, and points out that Multi-user Detection (MUD) technology can improve capability and performance of CDMA through suppressing MAI.
本文介绍了多址干扰在CD MA系统中的成因，并提出通过多用户检测技术可抑制多址干扰(MAI)，从而提高CD MA系统的容量和性能。
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