Group Delay Spectrum Estimation Method of Improvement of SNR for MST Radar Data

Dr. K. Nagi Reddy; K. Haneesha; K. Krishna Bharathi; Md. Rasool; M. Surendra; M. Adarsh

One of the primary objectives of this work is to study the use of phase based features, specifically, group delay function based features. The group delay function has been used in clean and noisy environments. The group delay function can be ill-behaved when the signal is not minimum phase (in particular, when the zeros of the transfer function are on the unit circle). To solve this, it was shown in [1] that modified group delay function (MODGDF) is a practical estimate of the minimum phase group delay function. In this paper, we propose to use the product of the power spectrum and the complex group delay function (CGDF), from the product spectrum. This spectrum combines the information from the magnitude spectrum as well as the phase spectrum. Finally computation and comparison of SNR‘s are being done on these three methods.

Select Volume / Issues:

• Volume 6 Issue 2, Mar. 2015

Year:

2015

Type of Publication:

Article

Keywords:

Power Spectrum; Group Delay; Complex Group Delay; Signal to Noise Ratio SNR Modified Product Group Delay

Journal:

IJECCE

Volume:

6

Number:

2

Pages:

252-254

Month:

March

ISSN:

2249-071X