3 edition of An airborne millimeter-wave FM-CW radar for thickness profiling of freshwater ice found in the catalog.
An airborne millimeter-wave FM-CW radar for thickness profiling of freshwater ice
Norbert E. Yankielun
by U.S. Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, Available from NTIS in Hanover, N.H, [Springfield, Va
Written in English
|Other titles||Airborne millimeter wave FM CW radar for thickness profiling of freshwater ice.|
|Statement||Norbert E. Yankielun.|
|Series||CRREL report -- 92-20.|
|Contributions||Cold Regions Research and Engineering Laboratory (U.S.)|
|The Physical Object|
|Pagination||viii, 77 p.|
|Number of Pages||77|
turn, freshwater input (Farrell and others, ). Satellite-based laser and radar altimeters optimized for To improve the accuracy of sea-ice thickness estimates, an airborne radar with fine resolution for mapping snow stratigraphy and characterizing radar backscatter is neededFile Size: KB. Calibration Technology of Airborne Millimeter Wave Cloud Radar WEN Tao, ZHAO Zeng-liang, YAO Zhi-gang, LIN Long-fu (Institute of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing, , China) Abstract: As the main remote sensing means for cloud detection, millimeter wave cloud measurement.
4. Observations of Cloud Properties Using the developed millimeter-wave FM-CW radar at 95 GHz, we observed clouds in a campaign observation in Amami Island in March , and on a sail on Mirai, a Japanese scientific research vessel, in September in the Arctic Ocean. Fig.7 shows an example of observed. Water vapor and oxygen absorption at millimeter-wave frequencies is much stronger than at microwave frequencies (Lhermitte ; Clothiaux et al. ; Li et al. ).Because water vapor and oxygen are highly concentrated in the lower troposphere, ocean surface measurements made from an airborne or spaceborne radar are attenuated by their by:
Airborne weather radar seminar: Radar system operation; interpreting the display; radar facts and myths; recognizing extreme hazards Unknown Binding – January 1, by Archie Trammell (Author) See all formats and editions Hide other formats and editions. Price New from Used from Unknown Binding, Author: Archie Trammell. MEASUREMENT OF LAKE ICE THICKNESS WITH A SHORT-PULSE RADAR SYSTEM by Dale W. Cooper, Robert A. Mueller, and Ronald J. Schertler Lewis Research Center SUMMARY Measurements of lake ice thickness were made during March at the Straits of Mackinac by using a short-pulse radar system aboard an all-terrain measurements were compared with ice Cited by: 1.
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Continuous Wave (FM-CW) radar, employing real-time data acquisition and Digital Signal Processing (DSP) techniques, has been developed for continuously recording the thickness profile of freshwater Size: 4MB.
An Airborne Millimeter-Wave FM-CW Radar for Thickness Profiling of Freshwater Ice [Norbert E. Yankielun] on *FREE* shipping on qualifying offers. A prototype broadband millimeter wave ( to 40 GHz) Frequency Modulated-Continuous Wave (FM-CW) radar, employing real-time data acquisition and Digital Signal Processing (DSP) techniques, was developed for continuously recording the thickness profile of freshwater ice.
Thickness resolution is better than 3 cm plus or minus 10 percent, which improves on short-pulse and FM-CW radars Cited by: 6. Get this from a library. An airborne millimeter-wave FM-CW radar for thickness profiling of freshwater ice.
[Norbert E Yankielun; Cold Regions Research and Engineering Laboratory (U.S.)]. A high-resolution, millimeter wave ( to GHz) Frequency Modulated-Continuous Wave radar with real-time data acquisition and digital signal processing and display capability was deployed from a low-flying ( m) helicopter to continuously acquire, process and display data during an ice thickness profiling survey of a km study reach.
A field-hardened, high-resolution, broadband millimeter wave ( to 40 GHz) Frequency Modulated-Continuous Wave (FM-CW) radar employing real-time data acquisition and digital signal processing. The remotely sensed mapping of freshwater ice thickness has been attempted with good success using high resolution airborne Frequency Modulated Continuous Wave (FM-CW) radars in the millimetre-wavelengths (Yankielun,Yankielun et al., ).Cited by: borne millimeter-wave (MNMW) FM-CWradarsys- Study * tem, capable of resolving a minimum ice thickness 2 Reach Alec Oc•an * of 3 cm ±10%.
While the capability to profile fresh-water sheet ice has been well established, the lack ofsimultaneous locationinformation has prevented km 40 the construction of ice cover maps -from these data.
Ellerbruch and Boyne () were the first to demonstrate that an FM-CW radar could be used to determine snow depth and stratigraphy, provided that the snow density (ρs) was available for estimating εs. Gubler and Hiller () extended the use to the detection of avalanche thickness and snow by: Snow depth was measured with an L-band frequency-modulated continuous wave (FMCW) radar operating from an aerial tramway up to 70 m above the ground.
Snow depth, wetness, and slope varied greatly along the km transect, with m of by: None of these methods are continuous in space and time and all, except the airborne, also require a certain ice thickness, strong enough to carry the load of the equipment.
In many applications a method that works for any ice thickness and gives the ice thickness as a function of time would be : Bo Nordell, Göran Westerström. Development of an airborne millimeter-wave FM-CW radar for mapping river ice Article in Canadian Journal of Civil Engineering 20(6).
An airborne millimeter-wave FM-CW radar for thickness profiling of freshwater ice. CRREL Report 92–20, US Army Corps of Engineers, Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire,77 pp. Google ScholarCited by: A high-resolution, broadband millimeter-wave ( to 40 GHz) Frequency Modulated-Continuous Wave (FM-CW) radar, with real-time data acquisition.
A prototype broadband millimeter wave ( to 40 GHz) FM-CW radar employing digital signal processing techniques has been developed for profiling the thickness of freshwater ice. The radar.
Ice Sheets to the Australian Antarctic Division is used to measure snow thickness over sea ice in East Antarctica.
Provided with the radar design parameters, the expected performance parameters of the radar are summarized. The necessary conditions for un-ambiguous identiﬁcation of the air/snow and snow/ice layers for the radar are by: Sea ice has proven to be a crucial element in the climate and overall heat budget of the globe.
The behavior of sea ice is dependent on the presence of snow cover due to its impact on the thermal insulation and albedo of the system. An airborne FMCW radar was created to measure the depth of the snow over sea ice.
Principles and Applications of Millimeter-Wave Radar (Artech House Radar Library) First Printing Edition by Nicholas C. Currie (Author), Charles E. Brown (Editor) ISBN ISBN Why is ISBN important. ISBN. This bar-code number lets you verify that you're getting exactly the right version or edition of a book.
Cited by: The energy reflected FM-CW (frequency modulated-continuous wave) from the target, delayed by the round-trip propaga- radar system has been developed that can do high- tion time 2tp, is mixed with a sample of the VCO resolution, continuous profiling of river and lake ice by: 1.
Frequency Modulated -Continuous Wave (FM-CW) radar employing real-time data acquisition and digital signal processing (DSP) techniques has been implemented for continuously acquiring and processing data for ice thickness profiling and studying surface scattering from freshwater lake and river ice sheets.
60GHz band FM-CW radar. In Chap. 5, the performance is analyzed in detail using a moving average (MA) model for the target and the clutter. II. FM-CW RADAR A. Stochastic Process for Received Signals A block diagram of a double antenna FM-CW radar system studied in this paper is shown in Fig.
1. A signal generator.The radar has also been used to measure thickness of snow over sea ice. Information about snow thickness is essential to estimate sea ice thickness from ice freeboard measurements performed with satellite radar and laser altimeters.
This radar has been successfully flown on NASA P-3 and DC-8 aircraft.Measuring snow thickness over Antarctic sea ice with a helicopter-borne 2 - 8 GHz FMCW radar. Natalia Galin B.E. Electrical Engineering (Hons.), New South Wales University, Submitted in ful lment of the requirements for the Degree of .