信息檢索與利用上機(jī)作業(yè)(更新版)
【正文】 s an improvement in both precision and resolution of data deposition. After applying V–L deposition to the lidar system, we present the 3D reconstructed model to demonstrate the deposition method. [ABSTRACT FROM AUTHOR] (Copyright applies to all Abstracts.)：VL deposition of a novel fullwaveform lidar system based on virtual instrument technique Xu Fan, Wang YuanQing School of Electronic Science and Engineering, Nanjing University, Nanjing 210046, China【Abstract】 A novel threedimensional (3D) imaging lidar system which is based on a virtual instrument technique is introduced in this paper. The main characteristics of the system include: the capability of modeling a 3D object in accordance with the actual one by connecting to a geographic information system (GIS), and building the scene for the lidar experiment including the simulation environment. The simulation environment consists of four parts: laser pulse, atmospheric transport, target interaction, and receiving unit. Besides, the system provides an interface for the onsite experiment. In order to process the full waveform, we adopt the bination of pulse accumulation and wavelet denoising for signal enhancement. We also propose an optimized algorithm for data deposition: the VL deposition method, which bines Vondrak smoothing and lasertemplate based fitting. Compared with conventional Gaussian deposition, the new method brings an improvement in both precision and resolution of data deposition. After applying VL deposition to the lidar system, we present the 3D reconstructed model to demonstrate the deposition method. 【Key words】： lidar system virtual instrument Vondrak smoothing lasertemplate based fitting 【Received:】 12 March 2015 ：無(wú)命中記錄：在明故宮外文閱覽室(刊)(三樓)有紙質(zhì)版，可以找到全文。這些對(duì)我以后的學(xué)習(xí)有了很大幫
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