Frequency shift estimation technique near the hotspot in BOTDA sensor
نویسندگان
چکیده
منابع مشابه
A New High Frequency Grid Impedance Estimation Technique for the Frequency Range of 2 to150 kHz
Grid impedance estimation is used in many power system applications such as grid connected renewable energy systems and power quality analysis of smart grids. The grid impedance estimation techniques based on signal injection uses Ohm’s law for the estimation. In these methods, one or several signal(s) is (are) injected to Point of Common Coupling (PCC). Then the current through and voltage of ...
متن کاملEffect of Underwater Ambient Noise on Quadraphase Phase-shift Keying Acoustic Sensor Network Links in Extremely Low Frequency Band
This study evaluates the impact of underwater ambient noise using seven real noise samples; Dolphin, Rain, Ferry, Sonar, Bubbles, Lightning, and Outboard Motor in three frequency ranges in extremely low frequency (ELF) band. The ELF band is the most significant bandwidth for underwater long-range communication. ELF band which is extended from 3 to 3000 Hz clearly, faces bandwidth limitation. Me...
متن کاملFrequency Sharing Hotspot Communication using
In cellular systems, hotspot communication can be established to support the high-traffic areas by using the same frequency band of the original cellular systems. However, interference from the hotspots deteriorates the communication performance of original cellular system. In this paper, in order to decrease these interference, we set up the access point of hotspots with the adaptive array ant...
متن کاملAn improved peak-frequency-shift method for Q estimation
There are mainly two frequency-shift methods developed for Q estimation: the centroid-frequency-shift method and the peak-frequency-shift method. Both of the two methods have advantages and disadvantages. Here we discuss and compare the two methods in detail and propose a novel frequency-shift method for Q estimation, which can improve Q estimates by combining the benefits of the two methods to...
متن کاملThe Matrix Pencil Technique for Three-Dimensional Frequency Estimation
This paper deals with the problem of estimating the three-dimensional (3-D) frequency using Matrix Pencil (MP) technique. A signal modeled by the sum of 3-D complex exponentials is considered and then a MP method is applied directly to this signal on a snapshot-by-snapshot basis and hence is computationally quite efficient to estimate the 3-D frequency with high resolution. #on-stationary in th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2019
ISSN: 1094-4087
DOI: 10.1364/oe.27.012899