Open AccessModified Radar Signal Model using NLFM
Publication year - 2019
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.b1091.0782s319
Subject(s) - signal (programming language) , side lobe , radar , signal transfer function , computer science , interference (communication) , nonlinear system , control theory (sociology) , acoustics , physics , electronic engineering , analog signal , telecommunications , engineering , artificial intelligence , channel (broadcasting) , control (management) , quantum mechanics , transmission (telecommunications) , antenna (radio) , programming language
Intended to the setback of high side lobes of the linear frequency modulation (LFM) signal, we put forward a new signal model using nonlinear frequency (NLFM) signal to overcome the issue. NLFM is a promising way for achieving lower signal to noise ratio, good resolution and better interference mitigation. The novel signal model is designed to enhance the target range estimation and to reduce the side lobe levels. In this paper, a new signal model is designed based on the principle of fusion of two stages. First stage is exponential based nonlinear function and the second stage is a linear function. The simulations were performed for the designed signal model and are compared with the NLFM signal designed using two stage LFM functions. Simulation results show that the designed signal has significant reduction in side lobe levels of the matched filter response