搜索结果: 1-12 共查到“光学仪器及技术 Data”相关记录12条 . 查询时间(0.281 秒)
ON THE ESTIMATION OF POLARIMETRIC PARAMETERS FOR OIL SLICK FEATURE DETECTION FROM HYBRID POL AND DERIVED PSEUDO QUAD POL SAR DATA
SAR RISAT-1 CTLR pseudo-quad pol correlation coefficient sigma naught
2019/2/28
Oil spills in oceans have a significant long term effect on the marine ecosystem and are of prime concern for maritime economy. In order to locate and estimate the oil spread area and for quantitative...
OIL SPILL AISA+ HYPERSPECTRAL DATA DETECTION BASED ON DIFFERENT SEA SURFACE GLINT SUPPRESSION METHODS
Oil Spill Detection Hyperspectral Data Glint Suppression Wavelet Transform Enhanced Lee Filter
2018/5/16
The marine oil spill is a sudden event, and the airborne hyperspectral means to detect the oil spill is an important part of the rapid response. Sun glint, the specular reflection of sun light from wa...
WATER MAPPING USING MULTISPECTRAL AIRBORNE LIDAR DATA
Land Cover Classification Multispectral LiDAR Optech Titan Point Cloud Processing SLIER
2018/5/16
This study investigates the use of the world’s first multispectral airborne LiDAR sensor, Optech Titan, manufactured by Teledyne Optech to serve the purpose of automatic land-water classification with...
Multi-spectral data acquisition and processing techniques for damage detection on building surfaces
Cultural Heritage Multispectral Terrestrial Laser Scanning Classification Acquisition Detection Recording
2015/8/25
This paper describes the development and investigation of a multi-spectral laser scanner for non destructive diagnosis of damages on building surfaces. The application of four semiconductor lasers as ...
Multi Data-Rate Synchronization of 40 GHz Mode-Locked Quantum-Dash Lasers Diodes
Mode-Locked Lasers Diodes Quantum-Dash Multi Data-Rate Synchronization
2015/5/15
Beat-tones at 40-GHz from a QDash-ML laser under 10 to 160 Gb/s optical injection are analyzed. A FWHM linewidth less than 8 Hz is obtained regardless of the rate of injected data stream.
Generation and Detection of 2.56 Tbit/s OTDM Data using DPSK and Polarisation Multiplexing
Nonlinear optics fibers Fiber optics communications
2015/6/9
Error free and low penalty generation and detection of 2.56 Tbit/s serial data is demonstrated. 1.28 Tbaud pulses are modulated with DPSK and polarisation multiplexed to achieve 2.56 Tbit/s with recor...
Improvement of Phase Noise Compensation for Coherent Optical OFDM via Data-Aided Phase Equalizer
Modulation Coherent communications
2015/6/4
We report a novel data-aided phase equalizer for coherent optical OFDM systems with RF-pilot enabled phase noise compensation. Simulation results corroborate the superior performance for different RF-...
Hybrid Co-Packaged Receiver Module with pin-Photodiode Chip and DEMUX-IC for 107 Gb/s Data Rates
Receiver Module pin-Photodiode Chip DEMUX-IC Data Rates
2015/7/20
A hybrid co-packaged receiver with pin-photodetector and DEMUX-IC for 107 Gb/s is presented. Well opened demultiplexed eye diagrams at 53.5 Gb/s for 107 Gb/s input and error-free demultiplexing perfor...
Bit-Rate-Variable and Order-Switchable Optical Multiplexing of 160- Gbit/s PRBS Data Using Tunable Optical Delays
Bit-Rate-Variable Order-Switchable Optical Multiplexing PRBS Tunable Optical Delays
2015/7/15
We experimentally demonstrate 160-Gbit/s PRBS data multiplexing with tunable rate and order using switchable optical delays and conversion/dispersion based tunable optical delay. Less than 9 dB penalt...
Data Rate Enhancement of RSOA-based WDM PON Systems using Feed-forward Equalizer and Forward Error Correction
WDM PON Systems Feed-forward Equalizer
2015/8/6
Effect of FFE and FEC to enhance the data rate of RSOA was investigated. 4.75Gbit/s was achieved by 0.6GHz RSOA using 4-tap FFE and ~14% FEC.
Cost-effective WDM-PON for Simultaneously Transmitting Unicast and Broadcast/multicast Data by superimposing IRZ signal onto NRZ signal
Cost-effective WDM-PON Simultaneously Transmitting Unicast Broadcast/multicast Data
2015/8/3
We propose a novel WDM-PON broadcast/multicast architecture that superimposes inverse-RZ signal onto NRZ unicast signal. Multicast control is realized through extinction ratio adjustment of the NRZ si...
Measurement of Non Linear Thresholds in O-OFDM Systems with Respect to Data Pattern and Peak Power to Average Ratio
O-OFDM Systems Respect Peak Power Average Ratio
2015/7/30
We investigated the non linear threshold of a coherent O-OFDM system. An improvement for NLT of about 2.5dB was demonstrated either by reducing the data pattern length or clipping of the OFDM signal.