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SPACE-BORNE LASER ALTIMETER GEOLOCATION ERROR ANALYSIS
Laser altimetry Error analysis Footprints Pointing angle Range Geolocation accuracy
2018/6/5
This paper reviews the development of space-borne laser altimetry technology over the past 40 years. Taking the ICESAT satellite as an example, a rigorous space-borne laser altimeter geolocation model...
TOWARDS A 3D TRUE COLORED SPACE BY THE FUSION OF LASER SCANNER POINT CLOUD AND DIGITAL PHOTOS
: Laser Scanning Digital Photogrammetry Data Fusion True Color 3D model Cultural Heritage
2015/8/7
The fusion of the laser scanner data, with its very rich point cloud, and the digital image, with its very detailed information about the
radiometric characteristics, to produce optimum 3D model, no...
ROADM System for Space Division Multiplexing with Spatial Superchannels
ROADM System Space Division Multiplexing Spatial Superchannels
2014/11/6
A two-span SDM system includes the first ROADM supporting spatial superchannels and the first cladding-pumped multicore-EDFA directly spliced to multicore transmission fiber.For 6 ×40 ×128-Gb/s SDM-WD...
Few-Photon Single-Atom Cavity QED With Input-Output Formalism in Fock Space
Atom optics cavity resonators nanophotonics optical switches optical waveguide
2015/8/7
The Jaynes–Cummings (JC) system, which describes the interaction between a cavity and a two-level atom, is one of the most important systems in quantum optics. We obtain analytic solutions for the one...
This paper presents the problem of the current separate treatment of levels of detail in city models. We propose a solution, detail the main principles, and present our initial results on the approach...
Binary Phase Micro-Grating and Polarization Beam Splitter for Free-Space Micro Optical Pickups
2011/11/24
A pop-up binary-phase micrograting and a pop-up micro polarization beamsplitter, for potential use in micro-optical pickups, have been realized on a single silicon chip using a two-layer polysilicon a...
New Ground-to-Train High-Speed Free-Space Optical Communication System with Fast Handover Mechanism
Free-space optical communication Scanners
2015/5/26
We developed a new ground-to-train free-space optical communication system that performs stable high-speed communication even when a train is running at high speed and does fast handover between laser...
Design-Space Exploration for CMOS Photonic Processor Networks
Optical interconnects Photonic integrated circuits
2015/6/10
Monolithically integrated dense WDM photonic network topologies optimized for loss and power footprint of optical components can achieve up to 4x better energy-efficiency and throughput than electrica...
Characterization of a MEMS Based Optical System for Free-Space Board-to-Board Optical Interconnects
Free-space optical communication Alignment
2015/6/9
We demonstrate alignment of an array of VCSELs to detectors, using a MEMS-based lens system for free-space board-to-board optical interconnects. Our optical system is capable of aligning up to 5 degre...
Wavelength-space permutation switch with coherent PDM QPSK transmission for supercomputer optical interconnects
Optical interconnects Coherent communications
2015/6/4
We experimentally study the performance of an economically-viable, high-capacity supercomputer optical interconnect employing wavelength-space optical packet switching,polarization division multiplexe...
Tunable Free Space Optical Delay Interferometer for Demodulation of Differential Phase Shift Keying Signals
Phase modulation Interferometry
2015/6/4
With a continuously tunable free space optical delay interferometer and direct detection D(Q)PSK signals can be received at varying symbol rates or under optimized conditions. The in-terferometer’s ph...
Higher-order space charge field effects on the self-deflection of bright screening spatial solitons in two-photon photorefractive crystals
non-linear optics two-photon photorefractive effect bright screening spatial solitons self-deflection
2011/5/9
We investigate the effects of higher-order space charge field on the self-deflection of bright
screening spatial solitons due to two-photon photorefractive effects by a numerical method
under steady...
Fisher’s linear discriminant (FLD) and support vector machine (SVM) in non-negative matrix factorization (NMF) residual space for face recognition
face recognition Fisher linear discriminant non-negative matrix factorization residual image
2011/5/9
A novel method of Fisher’s linear discriminant (FLD) in the residual space is put forward for
the representation of face images for face recognition, which is robust to the slight local
feature chan...
Wave-vector space picture for radiationless focusing and beaming
Wave-vector space picture radiationless focusing beaming
2015/8/10
Radiationless interference of an electromagnetic wave occurs in the near field when the feature sizes of the waves are at the deep subwavelength scale. We present the propagation in such a regim...
The Fiber Optic Subsystem Components on Express Logistics Carrier for International Space Station
Fiber Optic Subsystem Components Express Logistics Carrier International Space Station
2015/7/20
The Photonics Group at the United States NASA Goddard Space Flight Center has been supporting the design,development, manufacturing and integration of the optical fiber subsystem on the Express Logist...