可用于交通调查的GPS接收仪器:调研与评估
首发时间:2009-05-06
摘要:交通出行调查是交通规划和模拟不可或缺的数据收集手段。GPS能提高交通信息获取的效率和精度,逐渐成为交通调查技术发展和应用的重要趋势。日益多元化的GPS仪器为交通调查方案设计提供了更多的选择,而选择是否得当直接关系到交通调查的成败和效率。因此,建立一套针对交通调查的GPS仪器适用性评估原则成为必要。本文评述了利用GPS交通调查技术辅助/替代传统交通调查的必要性,总结归纳了国外GPS技术在交通调查中运用的经验和局限,结合对国内市场商业化GPS装置以及国外交通调查专用的GPS仪器的调查研究,对各类代表性产品进行评比,为如何选择GPS仪器进行交通调查提出一些评估指标和指导性建议。
关键词: 被动式GPS交通出行调查 市场调研 GPS仪器评估
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An Evaluation of Commercially Available GPS Devices for Passive GPS-based Travel Surveys
Abstract:Transportation planning and modeling require accurate travel data that can only be obtained through travel surveys. The use of GPS in travel surveys in many countries recently indicated a promising trend of replacing questionnaires for higher survey efficiency and data accuracy. When facing a whole array of GPS products in the present market, users of GPS must choose one that is most suitable for their survey design purposes. This paper attempts to establish a set of principles to guide the potential users in selecting suitable GPS for travel surveys. It first discusses the importance and significance of using GPS technology to augment and even replace the traditional questionnaire-based travel survey. Then some general criteria for GPS selection are proposed on the basis of previous experiences and research from the literature as well as our empirical tests of selected GPS instrument. On the other hand, commercial GPS devices of various types were surveyed and their specifications summarized to provide a glimpse of suitability of off-the-shelf GPS products for travel surveys. In the end, three GPS devices specifically designed for travel surveys were introduced, and their suitability evaluated.
Keywords: passive GPS-based travel survey GPS device market survey and assessment
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