Applied Aspects of Optical Communication and LIDAR

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Fredriksson and Hans M. Hertz Appl. Hans Edner, Gregory W. You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution. Cited by links are available to subscribers only. Figure files are available to subscribers only.

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Basics of Optical Communication System

Applied Optics Vol. Svanberg, "Lidar system applied in atmospheric pollution monitoring," Appl. Not Accessible Your account may give you access. Abstract A lidar system, incorporating tunable dye lasers and a cm diam Newtonian telescope, has been constructed and applied in atmospheric pollution monitoring. Applied Optics , 25 , , doi Blair, J. The laser vegetation imaging sensor: a medium-altitude, digitization-only, airborne laser altimeter for mapping vegetation and topography.

Browell, E.

WO2013139347A1 - Multiple directional lidar system - Google Patents

Environmental measurements: laser detection of atmospheric trace gases. In Guenther, R. Amsterdam: Elsevier, pp. Google Scholar. Bufton, J. Laser altimetry measurements from aircraft and spacecraft. Proceedings of the IEEE , 77 , , doi Buteau, S. Bioaerosol standoff monitoring using intensified range-gated laser-induced fluorescence spectroscopy. In Kim, Y. Dordrecht: Springer, pp. Chambers, D. Modeling of heterodyne efficiency for coherent laser radar in the presence of aberrations. Optics Express , 1 , 60, doi Chanin, M. Lidar studies of temperature and density using rayleigh scattering.

Cheng, A. Small-scale topography of Eros from laser altimetry and imaging. Icarus , , 51, doi Chu, X. Resonance fluorescence lidar for measurements of the middle and upper atmosphere. In Fujii, T. Dehring, M. Durand, Y. Eloranta, E.

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Practical model for the calculation of multiply scattered lidar returns. Applied Optics , 37 , , doi High spectral resolution lidar. In Weitkamp, C. Berlin: Springer, pp.

Emmitt, G. Combining direct and coherent detection for Doppler wind lidar. Proceedings of SPIE , , 31, doi Fujii, T. Laser Remote Sensing. Gardner, C. Sodium resonance fluorescence lidar applications in atmospheric science and astronomy. Garvin, J. Physics and Chemistry of the Earth , 23 , , doi Gelbwachs, J. Iron Boltzmann factor lidar: proposed new remote sensing technique for mesospheric temperature. Applied Optics , 33 , , doi Gentry, B. Wind measurements with nm molecular Doppler lidar.

Optics Letters , 25 , , doi Gibert, F. Two-micrometer heterodyne differential absorption lidar measurements of the atmospheric CO 2 mixing ratio in the boundary layer.

CROSS-REFERENCE TO RELATED APPLICATION(S)

Applied Optics , 45 , , doi Gimmestad, G. Reexamination of depolarization in lidar measurements. Applied Optics , 47 , , doi Grant, W. Applied Optics , 26 , , doi Bellingham: SPIE. Grund, C. High-resolution Doppler lidar for boundary layer and cloud research. Journal of Atmospheric and Oceanic Technology , 18 , , doi Hair, J. Airborne high spectral resolution lidar for profiling aerosol optical properties.

Optics & Laser Technology - Journal - Elsevier

Hannon, S. Heaps, W. Airborne Raman lidar. Applied Optics , 35 , , doi Henderson, S.


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Advanced coherent lidar system for wind measurements. Hoge, F. Chlorophyll biomass in the global oceans: airborne lidar retrieval using fluorescence of both chlorophyll and chromophoric dissolved organic matter. Hu, Y.

Sea surface wind speed estimation from space-based lidar measurements. Atmospheric Chemistry and Physics , 8 , , doi Huffaker, R. Remote sensing of atmospheric wind velocities using solid-state and CO 2 coherent laser systems. Proceedings of the IEEE , 84 , , doi Laser-Doppler system for detection of aircraft trailing vortices. Proceedings of the IEEE , 58 , , doi Irgang, T.

Two-channel direct-detection Doppler lidar employing a charge-coupled device as a detector. Kane, T. Structure and seasonal variability of the nighttime mesospheric Fe layer at midlatitudes. Using a first signal detection method, i. However, if the signal level in the first and second time bins are used, the resolution can be vastly improved.

One processing method is to subtract the signal magnitude in the second time bin from the signal magnitude in the first bin and divided by the sum of the magnitude of the two bins. Resolution is now set by the signal-to-noise level in each bin, but could be or more.

Definitions

This works across a range of pulse times and integration times and can easily get to resolution of less than 1 cm. Using longer pulses and integration times potentially allows for more laser power and reduces the requirements on the detector s , particularly the digitization rate. Longer integration times also reduce any noise that is a function of the bandwidth of the detector s. Typically in communication systems, the detector near a particular transmitter is detecting photons from another emitter which is part of a separate node.

Thus light from the co-located emitter may interfere with light from the communications emitter. There are several ways to mitigate or eliminate this potential interference. Shown in FIG. Using a single lens optic , the optical pulses coming in from different directions and , and are mapped to different elements , of the multi-element detector array , and thus can overlap temporally since they are detected by different detectors elements.

The system is comprised of a receiver RX with a detector or detector array that may use a lens, transmitter TX that sends both communications and LIDAR signals and may use a lens and electronic circuitry Some systems may also include a camera and camera optic In one implementation FIG. Vehicle is also communicating with the network or a fixed node using a communications beam Each vehicle has, for example, an optical receiver with a detector array depicted in FIG.

Node A and Node B are communicating with each other via a communications link , but also using LIDAR beams and to detect objects near them. They use time division to keep the information separated and identifiable.