搜索结果: 1-12 共查到“信号检测 analysis”相关记录12条 . 查询时间(0.312 秒)
Wavelet analysis of the LF radio signals collected by the European VLF/LF network from July 2009 to April 2011
Radio Network Wavelet precursors
2015/8/24
In 2008, a radio receiver that works in very low frequency (VLF; 20-60 kHz) and LF (150-300 kHz) bands was developed by an Italian factory. The receiver can monitor 10 frequencies distributed in these...
Transient Performance Analysis of a Multicorrelator Signal Quality Monitor
Transient Performance Analysis Multicorrelator Signal Quality Monitor
2015/6/29
The ability to monitor and detect problematic distortions in the received GPS-SPS signal is a task of critical importance. Detection of these satellite signal anomalies or “evil waveforms” (EWFs) can ...
As the Loran groundwave propagates, the signal is delayed. Additional Secondary Factor (ASF) is the value of the delay of the signal over the actual terrain relative to an all seawater path. The envel...
Lightning and other atmospheric noise interferes with Loran signal reception. This paper develops techniques to improve signal availability under these conditions.
A skywave signal is one has propagated by reflecting off the ionosphere. These signals are common in low frequency (LF) broadcast. However, in Loran, these signals are nuisances since they interfere w...
Analysis of Carrier Phase and Group Delay Biases Introduced by CRPA Hardware
Carrier Phase Group Delay Biases Introduced CRPA Hardware
2015/6/26
The benefits afforded by Controlled Reception Pattern Antennas (CRPAs) in multipath and interference mitigation are well documented, and they find use in many applications today. As such, CRPAs are be...
With its wide bandwidth and large amplitude spikes,atmospheric noise can dominate the Loran band (90-110kHz). Data collection efforts over the spring and summer of 2005 in Norman, OK and over th...
Analysis of Noise and Cycle Selection in a Loran Receiver
Analysis of Noise Cycle Selection Loran Receiver
2015/6/25
Thermal and atmospheric noise distort envelope measurements in a Loran receiver, and may cause the receiver to select the wrong cycle during signal acquisition. A cycle error would persist during sign...
Skywave signals are an inherent part of low frequency transmissions such as Loran.Unfortunately for navigation users, skywave signals are a source of interference to the Loran groundwave signal used f...
Steffen Thoelert received his diploma degree in Electrical Engineering with fields of expertise in high-frequency engineering and communications at the University of Magdeburg in 2002. The next four y...
A Theoretical Approach to Fault Analysis and Mitigation in Nanoscale Fabrics
Fault tolerance nanoscale fabrics biased voting staggered structural redundancy signal reliability theoretical model
2014/12/8
High defect rates are associated with novel nanodevice-based systems owing to unconventional and self-assembly based manufacturing processes. Furthermore, in emerging nanosystems, fault mechanisms and...
通过适当的空域稀疏化构造了可对阵列接收信号进行冗余稀疏表示的阵列流形矩阵，建立了相应的L1-analysis稀疏重构模型,用于恢复阵列接收信号，重点证明了该流形矩阵是满足L1-analysis稀疏重构条件的紧框架，从理论上保证了将L1 -analysis稀疏重构用于阵列接收信号恢复及波达角估计问题的合理性，并推导出信号恢复误差的理论上界。利用在微波暗室环境中采集的实测数据，结合MUSIC算法进行实...