نتایج جستجو برای: laser land levelling

تعداد نتایج: 302014  

اطلاعات زمینی و ماهواره‏ای مورد استفاده در تولید مدل‏های جاذبی زمین با افزایش کمی و کیفی و تنوع منابع زیادی مواجه بوده و در نتیجه دقت مدل‏های جاذبی زمین بهبود یافته و می‏توانند در تعیین ارتفاع ارتومتریک مورد استفاده قرار گیرند. ژئوئید به عنوان یک سطح هم پتانسیل از میدان ثقل زمین و سطح مبنای ارتفاعی در سیستم ارتفاعی ارتومتریک، دارای اهمیت و کاربردهای بسیاری در فعالیت‏های عمرانی، اکتشافی و اقیانو...

2012
Muyiwa Agunbiade

Overview The integration of land administration processes and the collaboration of land agencies are considered essential for the effective delivery of developable land for housing production. However, in most countries, housing and land management policies are usually split between multiple government agencies. The background literature suggests that the activities of governments’ agencies tha...

2004
Gus Edgren

....................................................................... iii Acronyms .......................................................................v 1. Background ............................................................ 1 2. The Partners’ Purposes and Interests ........................ 2 3. Deepening Partnerships by levelling imbalances ......... 5 4. Examples of Changing Evaluatio...

Journal: :Applied optics 2006
Kevin S Repasky Joseph A Shaw Ryan Scheppele Christopher Melton John L Carsten Lee H Spangler

An instrument is demonstrated that can be used for optical detection of honeybees in a cluttered environment. The instrument uses a continuous-wave diode laser with a center wavelength of 808 nm and an output power of 28 mW as the laser transmitter source. Light scattered from moving honeybee wings will produce an intensity-modulated signal at a characteristic wing-beat frequency (170-270 Hz) t...

2013
C. Hirt

SRTM/DTM2006.0 residual terrain model data to improve quasigeoid computations in mountainous areas devoid of gravity data, Journal of Geodesy 84(9): 557-567. Abstract: A global geopotential model, like EGM2008, is not capable of representing the high-frequency components of Earth's gravity field. This is known as the omission error. In mountainous terrain, omission errors in EGM2008, even when ...

2016
E. Ahokas J. Hyyppä X. Yu X. Liang L. Matikainen P. Litkey A. Kukko A. Jaakkola H. Kaartinen M. Holopainen M. Vastaranta

This paper describes the possibilities of the Optech Titan multispectral airborne laser scanner in the fields of mapping and forestry. Investigation was targeted to six land cover classes. Multispectral laser scanner data can be used to distinguish land cover classes of the ground surface, including the roads and separate road surface classes. For forest inventory using point cloud metrics and ...

2012
C. Nelson S. Avramov-Zamurovic O. Korotkova R. Sova

A hot-air turbulence emulator is employed for generating controlled optical clear air turbulence in the weak fluctuation regime in laboratory conditions. The analysis of the first and second-order statistical moments of the fluctuating intensity of a propagating infra-red (IR) laser beam through the turbulence emulator is made and the results are compared with bi-directional shore-to-ship marit...

2017
Junfeng Xie Xinming Tang Fan Mo Guoyuan Li Guangbin Zhu Zhenming Wang Xingke Fu Xiaoming Gao Xianhui Dou

Successfully launched on 30 May 2016, ZY3-02 is the first Chinese surveying and mapping satellite equipped with a lightweight laser altimeter. Calibration is necessary before the laser altimeter becomes operational. Laser footprint location prediction is the first step in calibration that is based on ground infrared detectors, and it is difficult because the sample frequency of the ZY3-02 laser...

2014
Terje A. Eikemo Rasmus Hoffmann Margarete C. Kulik Ivana Kulhánová Marlen Toch-Marquardt Gwenn Menvielle Caspar Looman Domantas Jasilionis Pekka Martikainen Olle Lundberg Johan P. Mackenbach

BACKGROUND Socioeconomic inequalities in mortality are one of the greatest challenges for health policy in all European countries, but the potential for reducing these inequalities is unclear. We therefore quantified the impact of equalizing the distribution of six risk factors for mortality: smoking, overweight, lack of physical exercise, lack of social participation, low income, and economic ...

2010
W. E. Featherstone J. F. Kirby C. Hirt M. S. Filmer S. J. Claessens

AUSGeoid09 is the new Australia-wide gravimetric quasigeoid model that has been a posteriori fitted to the Australian Height Datum (AHD) so as to provide a product that is practically useful for the more direct determination of AHD heights from Global Navigation Satellite Systems (GNSS). This approach is necessary because the AHD is predominantly a third-order vertical datum that contains a ~1 ...

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