نتایج جستجو برای: satellite laser range finding
تعداد نتایج: 1135449 فیلتر نتایج به سال:
This is a survey of the resolution of data gathered by different 3D-imaging devices. The sensors covered in this paper consist of the Asus Xtion Pro Live [1], Microsoft Kinect [2], Microsoft Kinect with Nyko Zoom Lens [3], and Hokuyo URG04LX Laser Range Finder [4]. The results of this survey suggest that the Asus and Kinect (both with and without the Zoom Lens) possess similar capabilities, and...
In high-speed satellite-to-ground laser communications, it has been shown that the Markov-based erasure channel model is well suited for the downlink experiment results. In that model, since the average erasure rate is relatively high, a low-rate error correction code is needed. In this paper, we focus on the application of low rate systematic Luby transform (SLT) code and show that the perform...
This paper discusses mobile robot localization by means of geometric features from a laser range finder and a CCD camera. The features are line segments from the laser scanner and vertical edges from the camera. Emphasis is put on sensor models with a strong physical basis. For both sensors, uncertainties in the calibration and measurement process are adequately modeled and propagated through t...
To construct realistic 3D models of large environments that match the physical world as accurately as possible there is the need to combine several kinds of data sources, such as: ground and aerial laser range scans, tracking data, photos, GPS data, satellite images. In this paper we concentrate on the ground level data acquisition. We present two integrated solutions for automated 3D acquisiti...
سازند پابده در برش دره شهر شامل 260متر شیل، شیل آهکی، مارن و آهک می باشد. مطالعات انجام شده بر روی فرامینیفرهای پلانکتون منجر به شناسایی و ارائه تعداد 12 بیوزون شده است. این بیوزون ها عبارتند از: بیوزون شماره یک: parasubbotina pseudobulloides partial-range zone ، بیوزون شماره دو: subbotina triloculinoides partial-range zone، بیوزون شماره سه: morozovella angulata partial-range zone ، بیوزون شمار...
The particle size distribution (PSD) is a critical aspect of the oceanic ecosystem. Local variability in the PSD can be indicative of shifts in microbial community structure and reveal patterns in cell growth and loss. The PSD also plays a central role in particle export by influencing settling speed. Satellite-based models of primary productivity (PP) often rely on aspects of photophysiology t...
Laser range finders are a vital component of high precision targeting engagements. The precise and accurate range-to-target information is an essential variable in the fire control solution of today’s sophisticated weapons. This range information is readily provided by the laser range finder, however, current fielded laser range finders are bulky, heavy, difficult to mount onto weapons, eye haz...
Profiling with the Expectation-Maximization Algorithm by Irene Fung B.S. Electrical Engineering, Utah State University (1992) Submitted to the Department of Electrical Engineering and Computer Science in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering and Computer Science at the Massachusetts Institute of Technology May 1994 0 Irene Fung, MC...
Recently, earth observation system by using satellite network have attracted much attention due to their wide coverage and disaster resistance. Although the system is useful for collecting various data, which have an affect on a natural disaster, ecology and so forth, earth observation satellite hardly send the collected observation data to the ground station. This is because that the earth obs...
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