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1·Distance estimation is the behavior in actual spatial environment, which is based on acquiring the distance knowledge.

环境空间距离估计任务就是获取环境空间距离知识基础上的实际空间行为。

2·Localization is one of the basic services for data collection in wireless sensor networks. The localization accuracy to some extent depends on the accuracy of distance estimation.

定位技术是无线传感器网络数据采集的基础服务，而定位精度的高低在很大程度上取决于距离测量的精度。

3·Node location is one of the key technology in most applications of Wireless Sensor Networks (WSNs), the localization accuracy to some extent depends on the accuracy of distance estimation.

在许多无线传感器网络的应用中，节点定位是其关键技术之一，而定位精度的高低在很大程度上取决于距离测量的精度。

4·The experiment result indicates that the system can improve the ranging precision and at the same time allows a more accurate estimation of the distance.

实验结果表明，系统提高了整体测距精度，得到了被测距离更加准确的估计。

5·Theoretical analyses and applications all show that the geometric distance least square method is also a good and effective parameter estimation method.

理论分析和应用实例表明，几何距离最小二乘方法同样也是一种比较有效的参数估计方法。

6·This paper presents the effect of the common process noise on track statistical distance and performance of state estimation fusion.

本文研究动态系统过程噪声对航迹统计距离和状态融合估计性能的影响。

7·The experiment result indicated that the system improved the ranging precision, at the same time got more accurate estimation of the distance.

实验结果表明，系统提高了整体测距精度，得到了被测距离更加准确的估计。

8·Microsatellite marker is one of the frequently used molecular markers. It has been used in the genotype identification, pedigree analysis and estimation of genetic distance.

微卫星是近几年来应用较多的一种分子标记，可有效地进行基因鉴定与系谱分析，并可估算群体间的遗传距离。

9·Distance join is widely used in spatial database. Selectivity estimation for distance join is the basis of optimizing the query of the distance.

距离连接在空间数据库中有着广泛的应用，而距离连接的选择度估计是优化距离查询的基础。

10·A new damping estimation method, the secant line method, was presented, that is based on the distance of neighbor peaks and valley of oscillation.

摘要提出利用相邻波峰和波谷之间距离估计阻尼比的割线方法。