Single sample Overlapping Doppler filter bank for processing Real Time Continuous Data
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2013, Vol 1, Issue 8
Abstract
Real time continuous Doppler filtering is used to calculate the spectrum of the input signal to detect the presence of random disturbances and properly isolate them. For continuous input data this can be done in two ways. In first method the data is divided into blocks and FIT is performed on each block to evaluate its spectral content. The resolution of this method is 'N' where 'N' is the order of the input block. This method cannot pinpoint the exact sample time of occurrence of disturbance. However in Second method the data spectral evaluation is done on sample by sample basis isolating the disturbance precisely. It is very effective technique available to identify the random and abrupt faults in the input data. The disturbance constrained in time domain data is spread out in frequency domain corrupting the frequency content in adjacent frequency bins. Using one sample overlap Linear filtering we can isolate the disturbance from input data and use the information for proper analysis. The sudden discontinuity is identified by sudden increase in side lobe levels of the Doppler fitter bank. The effect of the disturbance persists for data length of 'N' where N being the order. But by setting suitable thresholds it can be identified and can be isolated. We have presented architecture to perform the same on FPGA using custom designed DFT block and reordered the data now for single sample overlap operation.
Authors and Affiliations
N. Prem Kumar, K. Rajasekhar
Keywords
Related Articles
- EP ID EP27615
- DOI -
- Views 319
- Downloads 4
An Effective Approach Of Compressing Encrypted Images
In this paper proposing a novel scheme of scalable coding for encrypted images. In the encryption phase, the original pixel values are masked by a modulo- 256 addition with nonrandom numbers that are derived from a s...
A Survey on Object Detection Tracking and Identification in a Video Surveillance System
Object tracking in a crowd remains one of the challenging problems of video surveillance system. The task of object tracking is one of the most important components of real time video surveillance and monitoring syst...
Reliable Algorithm for Extracting Web Data
Web usage mining is a process of extracting useful information from server logs i.e. users history. Web usage mining is the process of finding out what users are looking for on the Internet. Some users might be look...
Prevention of Routing Attack in Mobile Ad-Hoc Networks: A comparative study
Mobile ad hoc networks (MANET) is a wireless network where nodes work in standalone fashion. The MANET faces various security challenges due to the environment in which it is deployed. The nodes of mobile ad hoc netw...
A survey on Transmission of data through illumination - Li-Fi
Li-Fi is a new wireless technology to provide the connectivity with in localized network environment. The main principle of this technology is we can transmit the data using light illumination by using light-emitting...