An Improved and Novel De-Ramping Technique for Linear Frequency Modulated Continuous Wave Synthetic Aperture Radar

Authors

  • Farhad Arpanaei Young Researcher and Elite Club, Central Tehran Branch, Islamic Azad University, Tehran, Iran
  • Majid Shakeri Young Researcher and Elite Club, Natanz branch, Islamic Azad University, Natanz, Iran
  • Behbod Ghalamkari Computer and Electrical Engineering Department, Science and Research Branch, Islamic Azad University, Tehran, Iran

Keywords:

Fixed Delay De-Ramping Technique, Chirp Signal, Processing Gain, Linear Frequency Modulation, Continuous Wave, Synthetic Aperture Radar,

Abstract

In this paper, a novel de-ramping technique for linear frequency modulated continuous wave (LFM-CW) synthetic aperture radar (SAR), named as the fixed delay deramping technique is introduced. The received and adaptive fixed delay version of transmitted signals was mixed to increase the processing gain of a system. Furthermore, in this study, the practical mode of de-ramping technique for LFM-CW SAR was considered against the related works assumed as the ideal mode. Similar to this work, the practical mode should consider the desired and undesired part of the de-ramped signal. In addition, the closed form equations for processing gain of the proposed deramping technique were derived. All in all, the simulation section illustrates a substantial improvement of the processing gain of the fixed de-ramping based on the proposed approach in comparison to the conventional methods.

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Published

2016-12-01

How to Cite

Arpanaei, F., Shakeri, M., & Ghalamkari, B. (2016). An Improved and Novel De-Ramping Technique for Linear Frequency Modulated Continuous Wave Synthetic Aperture Radar. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 8(9), 53–60. Retrieved from https://jtec.utem.edu.my/jtec/article/view/862