CORRELATIVITY OF ATMOSPHERIC EXTINCTION COEFFICIENT AND REAL-TIME INVERSION COMPUTATION FOR MULTI-WAVELENGTH LASER

Development of the Multi Wavelength Light Extinction Technique for the characterization of nanoparticles - Data inversion

During the past decades, the number of applications of nanoparticles and that of the related research increased considerably. Unfortunately, a sufficiently flexible measurement technique is still not available for the online characterization of the size and concentration of nanoparticles . The present paper is dedicated to the development of the Multi Wavelength Light Extinction (MWLE) techniqu...

Multi-wavelength Laser Photoacoustics

tight frame approximation for multi-frames and super-frames

در این پایان نامه یک مولد برای چند قاب یا ابر قاب تولید شده تحت عمل نمایش یکانی تصویر برای گروه های شمارش پذیر گسسته بررسی خواهد شد. مثال هایی از این قاب ها چند قاب های گابور، ابرقاب های گابور و قاب هایی برای زیرفضاهای انتقال پایاست. نشان می دهیم که مولد چند قاب تنک نرمال شده (ابرقاب) یکتا وجود دارد به طوری که مینیمم فاصله را از ان دارد. همچنین مسایل مشابه برای قاب های دوگان مطرح شده و برخی ...

Characterization of atmospheric turbulence effects over 149 km propagation path using multi-wavelength laser beacons

We describe preliminary results of a set of laser beam propagation experiments performed over a long (149 km) near-horizontal propagation path between Mauna Loa (Hawaii Island) and Haleakala (Island of Maui) mountains in February 2010. The distinctive feature of the experimental campaign referred to here as the Coherent Multi-Beam Atmospheric Transceiver (COMBAT) experiments is that the measure...

Witnessing extinction in real time

I started my amphibian research a little like Thoreau, living alone in a cabin in the woods and recording the seasonal variation in the natural world. I lived in a shack without plumbing or electricity, an hour away from the closest house, in a cloud forest on the top of a mountain that straddled the border between Costa Rica and Panama. I scrambled along mountain streams chasing seasonal repro...