Eliminating the Impacts of Flicker Noise and DC Offset in Zero-IF Architecture Pulse Compression Radars

Autor:	Lixin Ran, Changzhi Li, Jian Wang, Shuangtian Tang, Zhiyu Wang, Jingnan Pan, Yannick Salamin
Rok vydání:	2014
Předmět:	Engineering Radiation business.industry Pulse-Doppler radar Matched filter Filter (signal processing) Condensed Matter Physics law.invention Pulse compression law Electronic engineering Flicker noise Electrical and Electronic Engineering Radar Radar display business DC bias
Zdroj:	IEEE Transactions on Microwave Theory and Techniques. 62:879-888
ISSN:	1557-9670 0018-9480
DOI:	10.1109/tmtt.2014.2307832
Popis:	Flicker noise and dc offset have strong impacts on the performance of zero-IF receivers. In this paper, we propose a generalized approach to eliminate such impacts on zero-IF architecture pulse compression radars (PCRs). The conventional low-pass filter in a zero-IF receiver is replaced with a predefined filter (PDF) to filter out the dc and low-frequency components from the demodulated radar signal. Simulation and experimental results demonstrate that, based on the prior knowledge of the radar signal and the PDF, the performance degradation, due to the complete filtering of the low-frequency components, can be recovered through a newly deduced compensation equation. Our approach can be widely used in the implementation of highly integrated high-performance PCR systems in the future.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e82fae9bea67a15d35aebe9be8d5919 https://doi.org/10.1109/tmtt.2014.2307832 Zobrazit plný text záznamu