利用高精度遥感信息辅助设计检波器点位
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摘要
利用高精度遥感数据(分辨率已达亚米级)提取相关信息评价检波器组合、选择有利检波器埋置位置,既可在观测系统设计阶段用于评估采集设计方案能否实施及辅助选择适当检波器组合图形,也可在外业测量前逐点优选检波器组合中心点,从而达到改善接收条件、提高观测系统的可实施性及保证地震资料采集质量的目的。利用高精度遥感数据提取相关信息评价影响检波器接收信号质量的因素,所对应的遥感信息主要用于三个方面的评估:①利用DEM(数字高程模型)与坡度计算检波器组合图形内的平整度与展开能力(组合展开度);②利用检波器组合区域的组内高差、坡度、湿度、地表松散度评价耦合条件的优劣程度(组合优度);③利用综合高精度正射影像与DEM提取的相关信息划定工区内需要避让的地段及不符合HSE规范的施工禁区(可实施性)。实例分析表明,通过遥感影像选择检波器组合与检波器埋置中心,提高了检波器组合内埋置点的平整度与组合展开度,对减轻野外劳动强度、提高劳动生产率、节约成本都起到了重要作用。
Using high-precision remote data (resolution with sub-meter) to detect relevant information can evaluate geophone array and select favorable geophone planting position, which can not only be used to evaluate that the design plan can be implemented or not and auxiliary select appropriate geophone array pattern, but also optimize the central point of geophone array point by point before field measurement, reaching the goal improving receiving condition and practicableness of geometry and ensuring the quality of signal received by geophone. Using high-precision remote data to detect relevant information can evaluate the factors affecting the quality of signal received by geophone, the corresponding remote information is mainly used for evaluation in following three aspects: ①using DEM and slope to compute flatness and expanding capacity (array expanding degree) within geophone array pattern; ②using difference of elevation, slope, damp and surface porosity within an array in region of geophone array to evaluate good or bad couple condition (array superior degree); ③using relevant information detected by integrative high-precision image and DEM to partition the area that should be avoided in the work zone and forbidden zone of operation that is not corresponding to HSE standard (practicableness). The analysis of practical case showed that the flatness and expanding degree of planting points within a geophone array has been improved by using remote image to select geophone array and planting central of geophone array, playing important role reducing field work efforts, improving work efficiency and practicing economy of cost.
Using high-precision remote data (resolution with sub-meter) to detect relevant information can evaluate geophone array and select favorable geophone planting position, which can not only be used to evaluate that the design plan can be implemented or not and auxiliary select appropriate geophone array pattern, but also optimize the central point of geophone array point by point before field measurement, reaching the goal improving receiving condition and practicableness of geometry and ensuring the quality of signal received by geophone. Using high-precision remote data to detect relevant information can evaluate the factors affecting the quality of signal received by geophone, the corresponding remote information is mainly used for evaluation in following three aspects: ①using DEM and slope to compute flatness and expanding capacity (array expanding degree) within geophone array pattern; ②using difference of elevation, slope, damp and surface porosity within an array in region of geophone array to evaluate good or bad couple condition (array superior degree); ③using relevant information detected by integrative high-precision image and DEM to partition the area that should be avoided in the work zone and forbidden zone of operation that is not corresponding to HSE standard (practicableness). The analysis of practical case showed that the flatness and expanding degree of planting points within a geophone array has been improved by using remote image to select geophone array and planting central of geophone array, playing important role reducing field work efforts, improving work efficiency and practicing economy of cost.
引文
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[2]李辉锋,王旭.地震勘探中检波器组合之组内距选择方法探讨.物探化探计算技术,2002,24(2)
[3]罗亚等.基于遥感影像的植被指数研究方法评述.生态科学,2005,24(1)
[4]方洪宾.1∶25万遥感地质填图方法和技术.北京:地质出版社,2002
[5]Henri Maitre[法].合成孔径雷达图像处理.北京:电子工业出版社,2005
[6]Hodgson ME.What cell size does the computed slope/aspect angle represent?Photogrammetric Engineering&Remote Sensing,1995
[7]Weiss A.Topographic position and landforms analy-sis.Poster presentation,ESRI User Conference,2001
[8]Jenness J.Calculatinglandscape surface area fromdig-ital elevation models.Wildlife Society Bulletin,2004
[9]Jenness J S.Topographic position index extension forArcView3.x.Jenness Enterprises,2005
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