Download or read book Remote Sensing of the Lower Atmosphere by Means of FM CW Radar written by J. H. Richter and published by . This book was released on 1972 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report provides a wide cross section of observations including atmospheric turbulence, wave motions, rain, and simultaneous radar and radiosonde soundings. The radar reveals with unprecedented detail the microstructural dynamical processes knowledge of which is necessary for the interpretation of radio propagation phenomena. Simultaneous radar and radiosonde soundings show excellent correlation between radar-detected scattering layers and directly measured gradients in the refractive index profile. (Author).
Download or read book Potential Capabilities of Four Lower Atmosphere Remote Sensing Techniques written by Wave Propagation Laboratory and published by . This book was released on 1971 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a discussion and evaluation of the present and potential capabilities of four remote sensing techniques for the measurement of meteorological variables in the lower atmosphere (i.e., primarily the troposphere). The four techniques treated are acoustic echo sounding, FM-CW radar, Lidar, and microwave radiometry. The meteorological variables of interest are the profiles (in three dimensions) of wind velocity, temperature, humidity, density, and refractive index. The desired capability is not merely to sense, but also to measure quantitatively the variable being studied.
Download or read book Advances in Geoscience and Remote Sensing written by Gary Jedlovec and published by IntechOpen. This book was released on 2009-10-01 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote sensing is the acquisition of information of an object or phenomenon, by the use of either recording or real-time sensing device(s), that is not in physical or intimate contact with the object (such as by way of aircraft, spacecraft, satellite, buoy, or ship). In practice, remote sensing is the stand-off collection through the use of a variety of devices for gathering information on a given object or area. Human existence is dependent on our ability to understand, utilize, manage and maintain the environment we live in - Geoscience is the science that seeks to achieve these goals. This book is a collection of contributions from world-class scientists, engineers and educators engaged in the fields of geoscience and remote sensing.
Download or read book Radar Remote Sensing of the Lower Atmosphere written by Ali Karimian and published by . This book was released on 2012 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-standard radio wave propagation in the atmosphere is caused by anomalous changes of the atmospheric refractivity index. These changes, if not accounted for, can cause major problems in detection of the location of flying targets. Direct sensing of the atmospheric refractivity index by measuring humidity and temperature has been common practice in past. Refractivity from clutter (RFC) was developed in recent years to complement traditional ways of measuring the refractivity profile in maritime environments. The ability to track the refractivity profile in time and space, together with a lower cost and convenience of operations have been the promising factors that brought RFC under consideration. Presented is an overview of the basic concepts, research and achievements in the field of RFC. A multiple angle clutter model is derived that is constructed by angular spectral estimation on the propagating power. This model is shown to perform better than conventional clutter models in remote sensing applications. Examples are either based on synthetically generated radar clutter or a set of S-band radar measurements from Wallops Island, 1998. Finally, an approach for fusing RFC output with evaporation duct characterization based on ensemble forecasts from a numerical weather prediction (NWP) model is examined. Relative humidity at a reference height and air-sea temperature difference (ASTD) are identified as state variables. Probability densities of atmospheric parameters and propagation factor obtained from an NWP ensemble, RFC, and joint inversions are compared. It is demonstrated that characterization of the near surface atmosphere by combining RFC and NWP reduces the estimation uncertainty of the refractivity index structure in an evaporation duct using either method alone.
Download or read book FM CW Radar Signals and Digital Processing written by Donald E. Barrick and published by . This book was released on 1973 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1973 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simultaneous FM CW Radar and Lidar Probing of the Atmosphere written by V. R. Noonkester and published by . This book was released on 1972 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two new remote sensors, the NELC-developed FM-CW radar and Stanford Research Institute's laser radar, were operated simultaneously from 30 Nov 1971 to 14 January 1972 to establish their capabilities and limitations. Nine days of data were obtained by recording techniques which produced records having the same time and height scales. (Author).
Download or read book Applications of Ground based Remote Sensing Techniques written by Donald R. Fitzgerald and published by . This book was released on 1980 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of selected techniques for the remote measurement of winds, shear, turbulence, aerosols, and temperature and moisture profiles has been outlined in some detail. Emphasis has been placed on techniques that may provide high-resolution data in the vicinity of airbases. A representative and fairly extensive list of references to the evolution of the various techniques has been prepared. The FM-CW radar and CO2 pulse Doppler laser have been identified as valuable for low-level wind and shear measurements. Strong downdraft conditions may be identified through use of infrared thermal anomaly detectors. Temperature and moisture profiles may be obtained through a combination of active sounding for profile inflection points and thermal or microwave multichannel radiometry.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Based Remote Sensing of the Atmospheric Boundary Layer written by Stefan Emeis and published by Springer Science & Business Media. This book was released on 2010-09-08 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents a comprehensive overview of the current state-of-the-art in the atmospheric boundary layer (ABL) research. It focuses on experimental ABL research, while most of the books on ABL discuss it from a theoretical or fluid dynamics point of view. Experimental ABL research has been made so far by surface-based in-situ experimentation (tower measurements up to a few hundred meters, surface energy balance measurements, short aircraft experiments, short experiments with tethered balloons, constant-level balloons, evaluation of radiosonde data). Surface flux measurements are also discussed in the book. Although the surface fluxes are one of the main driving factors for the daily variation of the ABL, an ABL description is only complete if its vertical structure is analyzed and determined. Satellite information is available covering large areas, but it has only limited temporal resolution and lacks sufficient vertical resolution. Therefore, surface-based remote sensing is a large challenge to enlarge the database for ABL studies, as it offers nearly continuous and vertically highly resolved information for specific sites of interest. Considerable progress has been made in the recent years in studying of ground-based remote sensing of the ABL. The book discusses such new subjects as micro-rain radars and the use of ceilometers for ABL profiling, modern small wind lidars for wind energy applications, ABL flux profile measurements, RASS techniques, and mixing-layer height determination.
Download or read book Proceedings written by Jack E. Cermak and published by . This book was released on 1975 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remote Sensing Applications in Meteorology and Climatology written by Robin A. Vaughan and published by Springer Science & Business Media. This book was released on 1987-06-30 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Study Institute, Dundee, Scotland, August 17-September 6, 1986
Download or read book Ground based Remote Sensing of Precipitation Using a Multi polarized FM CW Doppler Radar written by Herman Walter Johan Russchenberg and published by . This book was released on 1992 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Using VHF Radars to Probe the Atmosphere written by Arnold A. Barnes and published by . This book was released on 1972 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Columns of ions left by the passage of meteors through the 80- to 100-km altitude region are used as tracers to monitor the wind and density variations of the high atmosphere. Recent equipment development with pulse-interferometers operating in the 20- to 75-MHz band has made it possible to obtain more accurate information on the location of the reflection point on the ionized meteor trail. Analyses of the wind and density data obtained at AFCRL, at Stanford, California, Durham, New Hampshire, and Eglin AFB, Florida are reviewed. Rocket and meteor trail wind observations were obtained at Eglin AFB and, for a separation of 150 km, show reasonable comparisons within one hour. Poor comparisons at larger space and time separations are attributed to large-scale horizontal eddies (gravity waves). (Author Modified Abstract).
Download or read book NOAA written by United States. National Oceanic and Atmospheric Administration and published by . This book was released on 1977 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NOAA written by and published by . This book was released on 1978 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1973-01-25 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
