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Satellite remotely sensed products provide critical information to weather forecasters at the National Oceanic and Atmospheric Administration (NOAA) and greatly supplement spare or nonexistent surface observations. Low earth orbiting passive microwave sensors provide unique information related to atmospheric moisture and precipitation, as well as surface properties such as oceanic wind speed. This...
Passive microwave radiometry is a special application of microwave communications technology for the purpose of collecting Earth's electromagnetic radiation. With the use of radiometers onboard earth orbiting satellites, scientists are able to monitor the Earth's environment and climate system on both short- and long-term temporal scales with near global coverage.
The Stepped Frequency Microwave Radiometer (SFMR) is an instrument flown on research and reconnaissance aircraft through tropical and extratropical cyclones providing rain rate and surface wind speed estimates. Errors have been observed with the retrievals from SFMR, especially in extratropical cyclones over cold water, when compared with other sensors. In this paper, some of the SFMR wind speed errors...
This presentation will include an overview of the recently launched NASA CYGNSS mission Level 1 calibration algorithms and their on-orbit validation [1], [2]. The validation of the Level 1 calibration will be performed in several steps, including a) a detailed noise floor analysis to assess the observed on-orbit noise power levels over the open ocean, b) multiple consistency checks using a forward...
As machining tool systems become increasingly more complicated, the improvement of system scale and functions, increases the probability of system failure. To avoid human injuries caused by system failure, improve system reliability, and enhance the management of system failure and risk control, reliability analysis technology, called FMECA, has been applied many industries since the 1950s. This paper,...
We report on airborne measurements of the cross-polarized (VH) ocean surface normalized radar crosssection (NRCS) at incidence angles between 15° and 40° obtained at C-band in high-wind (> 30 m s−1) conditions. The present observations were taken in Hurricane Patricia on 23 October 2015 and extend the wind speed range of the existing cross-polarization ocean surface NRCS literature [1]–[4]. The...
We report on airborne measurements of the sea-surface normalized radar cross-section (NRCS) at incidence angles of approximately 22° obtained at both C-band and Ku-band in high-wind (> 25ms−1) conditions. Measurements obtained over numerous research flights through tropical cyclones and high-latitude winter storms between 2011 and 2014 are composited to yield geophysical model functions in rain-free...
In this paper, we present a PCB-based active miniaturized MR field probe for real-time monitoring of the magnetization's phase evolution during magnetic resonance (MR) experiments. The data obtained with the presented sensor can be used to correct gradient field imperfections which uncorrected result in significant distortions in the reconstructed MR images. The presented active field probe consists...
A systematic method is proposed to address modeling challenges in accurate chip level leakage prediction, namely a precise total leakage width count method, a simple model to quantify leakage uplift caused by systematic across-chip variation, and a consistent model to capture 3-sigma leakage and leakage spread at fixed performance.
A single-transistor active pixel image sensor compatible with dual-poly-gate technology is investigated in this paper. The integration compatibility is studied by integrating this device using EEPROM fabrication processes. The operation mechanism, light sensing performance, and non-destructive reading of this image sensor will be discussed.
Co-Silicide provides lower contact resistance and better device performance, which is widely used in 0.18um and below technology. Typical Co-Salicide process is composed of Co and Ti/TiN capping layer deposition and two RTA (Rapid Thermal Anneal) process steps. The quality of silicide formation will directly influence its device performance. With the character of Co thin film, which is more sensitive...
A novel device structure containing a SiGe stressor is used to impose tensile strain in nMOSFET channel. 400MPa of uniaxial tensile stress is induced in the Si channel through elastic relaxation/strain of the SiGe/Si bi-layer structure. This strain results in 40% mobility enhancement and 15% drive current improvement for sub-60nm devices compared to the control device with no strain
One practical version of an EHD induction pump includes an active travelling wave electrode running along the center of a grounded cylindrical pipe. Laminar flow which takes place in the annulus between pipe and electrode is modelled theoretically in terms of an induced charge layer situated at an arbitrary distance from the center electrode. Calculation of flow rates for various choices of geometry...
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