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提出一种基于特征点跟踪的稳像算法。该算法从参考帧图像中提取出一组特征点，然后在后续帧中进行基于Kalman滤波的特征点的跟踪，匹配参考帧图像中特征点的坐标和当前图像中基于Kalman滤波修正后得到的特征点的坐标，并通过仿射模型求出位移量及旋转参数，最后进行反向变换，从而得到稳定的视频图像。实验结果表明：该算法稳像效果好，运算复杂度低，且具有较强的鲁棒性。
200-Gb/s PDM-16QAM generation using a new synthesizing method
generation synthesizing method
2015/7/20
160 and 200-Gb/s (polarization multiplexed) 16QAM has been generated using commercial modulators with binary signals through a novel synthesizing method. Intradyne detection with robust polarization d...
Efficient Routing Algorithms for Hierarchical ASON
Efficient Routing Algorithms Hierarchical ASON
2015/7/17
Three operational routing algorithms for hierarchical Automatically Switched Optical Networks (ASON) are proposed. Their effectiveness is demonstrated in terms of blocking probability and time perform...
Weight-based Algorithm for Demand Aggregation in SONET/DWDM Networks
Algorithm Demand Aggregation SONET/DWDM Networks
2015/7/17
A weight-based heuristic algorithm was developed to efficiently aggregate UPSR demands into SONET rings over DWDM networks in order to minimize the total number of optical line cards for a given set o...
XPM Tolerant Adaptive Carrier Phase Recovery for Coherent Receiver Based on Phase Noise Statistics Monitoring
XPM Tolerant Adaptive Carrier Phase Recovery Coherent Receiver Phase Noise Statistics
2015/7/17
According to the monitored phase noise statistics, the averaging weights in carrier phase recovery is adaptively optimized. Comparing with existing optimization techniques, 1dB Q value improvement can...
Experimental 2.5 Gbit/s QPSK WDM Coherent Phase Modulated Radio- over-Fibre Link with Digital Demodulation by a K-means Algorithm
QPSK WDM Coherent Phase Modulated Radio- over-Fibre Link Digital Demodulation K-means Algorithm
2015/7/17
Highest reported bit rate of 2.5 Gbit/s for optically phase modulated radio-over-fibre link employing coherent detection is demonstrated. Demodulation of 3x2.5 Gbit/s QPSK modulated WDM channels, is a...
Complexity of Algorithms for Digital Coherent Receivers
Complexity Algorithms Digital Coherent Receivers
2015/7/16
We give an overview of digital signal processing algorithms for coherent receivers. We explore single carrier and multi carrier approaches and compare the complexity of blind equalizer adaptation as w...
QAM Adaptation of Constant-Modulus Algorithm and Differential Phase Compensation for Polarization Demultiplex in Coherent Receiver
QAM Adaptation Constant-Modulus Algorithm Differential Phase Compensation Polarization Demultiplex Coherent Receiver
2015/7/16
The constant modulus algorithm is adapted for QAM signals and complemented with a differential phase compensation. This triples polarization control speed and doubles laser linewidth tolerance.
Real-time Implementation of Digital Coherent Detection
Real-time Implementation Digital Coherent Detection
2015/7/15
The implementation of algorithms for coherent detection of advanced modulation formats imposes constraints. A hardware-efficient phase estimator is presented, and measurement results with a CMOS recei...
From Algorithm to ASIC: Realising Distortion Tolerant Transmission
Algorithm ASIC:Tolerant Transmission
2015/7/15
Structural design and functional blocks of a digital equalizer chipset is shown in a case study of two product generations. In addition, challenges from field applications and product solutions are pr...
一种提高共聚焦显微镜信噪比算法的研究
共聚焦显微镜 显微成像 Kalman滤波器 信噪比
2011/4/18
基于共焦显微镜的成像特点，建立了Kalman滤波算法的理论模型，把Kalman滤波方法引入到系统中，提出一种基于图像像素的Kalman滤波算法,并实现了实时化的Kalman滤波器。实验结果表明：该算法能够有效地提高共焦显微镜信噪比,但是以牺牲时间为代价，提高系统分辨率的根本方法还是要着重考虑优化成像系统光路和探测电路。
改进了用于确定渐变平面波导折射率分布的反WKB方法。这种渐变折射率分布是从在WKB近似的条件下得到的本征方程用数值方法求得的。用改进的反WKB方法计算3种(指数、高斯和阶跃函数)折射率分布，结果验证了该方法的有效性。先用最小二乘法拟合测量得到的有效折射率。进而求出有效折射率函数，再利用改进的算法分布计算出各自的折射率分布。计算结果同精确值吻合得很好。计算出的波导表明折射率同精确值的绝对误差约为0．...
非球面最适球面的确定方法——三点法
非球面 非球面度 最适球面
2008/9/17
根据非球面生产的实际情况．指出非球面最适球面的确定方法．详细分析最适球面的计算方法．并对一抛物面进行了实例计算，通过与最小二乘法的计算结果比较．指出该方法具有计算简单、与加工工艺过程相符合等特点。
Class B+ GPON extended to 44dB while maintaining 15dB optical budget difference
Class B+ GPON extended optical budget difference
2015/8/6
Optical amplifiers are evaluated as extender boxes for GPON ClassB+ systems. We obtained a total budget of 44dB from OLT to ONUs while maintaining 15dB optical budget difference between ONUs.
Demonstration of 10.3-Gbit/s Burst-mode CDR employing 0.13 um SiGe BiCMOS Quad-rate sampling IC and Data-phase decision-algorithm for 10Gbps-based PON Systems
Burst-mode CDR SiGe BiCMOS Quad-rate sampling IC Data-phase decision-algorithm PON Systems
2015/8/6
We present a new 10Gbps-based PON burst-mode CDR with a 0.13 um BiCMOS quad-rate sampling IC and decision-algorithm for optimum recovery-data selection.Instantaneous burst-mode recovery of the first b...