37 Result(s)
within
English
Physics
Astronomy, Observations and Techniques
**hu Zhu
Chapter
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Chapter and Conference Paper
Design of Compact Long-Slit Wynne-Offner Spectrometer for Hyperspectral Remote Sensing
This paper focuses on the compact long-slit Wynne-Offner imaging spectrometer suitable for wide-swath high-resolution remote sensing applications. Through tracing the chief ray, astigmatism of Wynne-Offner spe...
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Chapter and Conference Paper
Analysis on NETD of Thermal Infrared Imaging Spectrometer
In order to suppress the noise of thermal infrared imaging spectrometer and improve its detection sensitivity, relationship between noise equivalent temperature difference (NETD) and various noise factors was ...
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Chapter and Conference Paper
Design of a Snapshot Spectral Camera Based on Micromirror Arrays
Spectral imaging is an emerging tool for a variety of scientific and engineering applications because of the additional information it provides about the nature of the materials being imaged. Snapshot spectral...
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Chapter and Conference Paper
Suppression of the Self-Radiation Stray Light of Long-Wave Thermal Infrared Imaging Spectrometers
For a thermal infrared hyperspectral imaging system, there are characteristics of low signal energy and severe self-thermal radiation. The thermal radiation will influence its imaging quality so much so that i...
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Chapter and Conference Paper
The Nuclear Physics Uncertainty on Kilonova Heating Rates and the Role of Fission
The detection of an electromagnetic counterpart to GW170817 suggests that r-process elements are produced in neutron star mergers. This electromagnetic counterpart has been modeled as a kilonova, which is a li...
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Chapter and Conference Paper
Fission Properties Relevant for GW170817
The recent observation of gravitational waves and electromagnetic counterpart to GW170817 [1] has provided fresh impetus to understand the formation of the heaviest elements on the periodic table. The merging of ...
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Chapter and Conference Paper
A Novel Study on the Technique for Deriving O/N2 from Thermospheric Far Ultraviolet Dayglow Emissions
The far ultraviolet dayglow emissions of the thermosphere, produced by the photoelectrons impact on the atomic oxygen or the nitrogen molecules, are the most important emissions used as remote sensing signals ...
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Chapter and Conference Paper
Optical Design of an Aperture-Divided MWIR Imaging Polarimeter
The polarization state of light emitted or reflected from scene contains massive important information about target, such as the geometry, surface properties, material characteristics and so on. Imaging polari...
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Chapter and Conference Paper
Research and Design of the Architecture of On-Orbit Remote Sensing Information Processing System
In this paper, we designed an on-orbit remote sensing information processing system based on parallel multiprocessor, according the demands of fast processing of remote sensing information and quick target mon...
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Chapter
Modeling of a Feed Support System for Fast
As an engineering demonstrator for SKA, the Five-hundred-meter Aperture Spherical Telescope (FAST) is proposed in China. This paper is focused on one of the most critical components of FAST, the feed support s...
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Chapter
Determination of the Offset of CHAMP GPS Antenna with Respect to Satellite’s Mass Center
It is well known that there are systematic differences between the TOPEX/POSEIDON orbits determined by GPS and by SLR plus DORIS. The residuals of laser tracking data to GPS 35 and GPS 36 also show significant...
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Chapter and Conference Paper
Distances and Kinematics of Classical Cepheids
The Hipparcos Catalogue supplies high precise astrometric observations of stars. The measurements of trigonometric parallaxes for the classical Cepheids provides the best opportunity for reexamining the PL rel...
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Chapter
Approaches to CHAMP Precise Orbit Determination
With a tailored gravity field model, the dynamic restitution of the CHAMP orbit can be carried out quite accurately. The solution can be based on the onboard accelerometer data or on dynamical models with addi...
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Chapter
Impact of different data combinations on the CHAMP orbit determination
For the orbit determination of the CHAMP satellite three data sets are of major importance: GPS, satellite laser ranging and the accelerometer observations. The first two can be used independently for the orbi...
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Chapter
New Global Gravity Field Models from Selected CHAMP Data Sets
Several sets of data were carefully selected out of the first 12 months of CHAMP GPS and STAR micro-accelerometer observations to derive a new model of the Earth’s static gravity field. These data have been dy...
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Chapter
Five-Hundred-Meter Aperture Spherical Telescope Project
A Five hundred meter Aperture Spherical Telescope (FAST) is proposed to be built in theunique karst area of southwest China, and will act, in a sense, as a prototype for the Square KilometerArray (SKA). It wil...
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Chapter
The FAST/SKA Site Selection in Guizhou Province
Many karst depressions with diameters of 300 m to 500 m, suitable for constructingArecibo-style radio telescopes, were identified in the south of Guizhou Province by Remote Sensing(RS) and Geographic Informati...
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Chapter
The Control System of the Active Main Reflector for Fast
The main reflector of FAST consists of about 1800 elementary units. Each unit has threeadjustable supports to fix its position, and its position is adjusted by means of mechanical actuators.According to the ra...
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Chapter and Conference Paper
Stellar Image Location with Maximum Correlation Procedure
The location method and accuracy analysis has become a very important subject in astrometry since the photoelectric technique was widely applied. The location methods of the stellar images observed with the sl...
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Chapter and Conference Paper
The VLT Interferometer
One of the observing modes available with the ESO Very Large Telescope will be coherent combination of the light received by up to four 8m unit telescopes and several 1.8m auxiliary telescopes. The location of...
