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A NOVEL TECHNIQUE FOR PRECISION GEOMETRIC CORRECTION OF JITTER DISTORTION FOR THE EUROPA IMAGING SYSTEM AND OTHER ROLLING-SHUTTER CAMERAS
Europa photogrammetry jitter geometric correction active-pixel sensors
2018/5/14
We use simulated images to demonstrate a novel technique for mitigating geometric distortions caused by platform motion (“jitter”) as two-dimensional image sensors are exposed and read out line by lin...
IMPROVEMENT OF DEM GENERATION FROM ASTER IMAGES USING SATELLITE JITTER ESTIMATION AND OPEN SOURCE IMPLEMENTATION
ASTER Jitter Orbit Attitude correction DEM generation RPC
2016/1/15
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) system embarked on the Terra (EOS AM-1) satellite has been a source of stereoscopic images covering the whole globe at a 15m ...
Property and Removal of Jitter in Beijing-1 Small Satellite Panchromatic Images
Beijing-1 Small Satellite Panchromatic Image Jitter Removal Jitter Property
2015/11/23
Attitude of the Small satellite is prone to be affected by external disturbing factors due to its small inertia. As for Beijing-1 small satellite, jitter is induced and exhibited in the images taken w...
为了更好地对于TMT三镜镜面jitter进行评价,基于镜面方向的加速度信号,通过传递函数以及功率谱的方法,获得了镜面jitter的频域分布与数值特征。首先,对于梯形积分、辛普森积分以及3/8辛普森积分的基本性质进行推导,之后基于功率谱的思想,提出利用白噪声填满数据全部频域以及结合数值方法得到传递函数;最后对于实际测量得到的加速度信号,得到了米级口径望远镜镜面jitter的数值以及频域分布,同时证明...
由于采集条件的限制及后续处理中废炮废道的剔除,使得地震数据成为不完整数据体,这将影响后续地震资料的处理及反演,因此有必要进行地震数据重建。本文结合曲波变换和凸集投影(POCS)方法对不规则地震数据进行重建:对比分析不同阈值模型对二维地震数据重建结果及收敛速度的影响,采用改进的指数阈值模型(q=0.5)和改进的Jitter欠采样方法在频率域对每一有效频率切片进行二维重建,最终实现三维地震数据重建,并...
Phase Noise and Timing Jitter Eliminator for Mode-locked Lasers Based on External Graphene Layers
Mode-locked lasers Nanomaterials
2015/5/21
We demonstrate a noise eliminator with a reduction of 34% for phase noise and timing jitter based on external graphene layers for mode-locked lasers by absorbing the low-power background noise from th...
Fast Experimental BER Extraction of 40 Gb/s Optical Signal Impacted by Jitter, ISI and ASE Noise Using Waveform Sampler
Optical Signal Impacted Jitter ISI ASE Waveform Sampler
2015/8/4
We present a new experimental BER extraction method using a sampling oscilloscope and statistical processing on EDFA noise, photoreceiver noise, jitter and ISI successfully tested on a 40 Gb/s network...
Timing jitter tolerant OTDM Demultiplexing using a Saw-Tooth Pulse Shaper
Timing jitter tolerant OTDM Demultiplexing Saw-Tooth Pulse Shaper
2015/7/31
Saw-tooth pulses, shaped using a fiber Bragg grating, provide timing jitter tolerant OTDM data demultiplexing in a scheme based on cross-phase modulation in fibre, with subsequent offset filtering.