Design and Implementation of Multi-Frequency Digital Receiver Based on FPGA

Abstract:

Recently, the concept of software radar has been proposed. The wide application of the digital technology has become a trend. With the development of modern radar system, the system requires higher and higher performance to the radar receiver. The technology of digital receiver has become an effective implementation method for high-accuracy and wide-band radar receiving systems. However, most of the digital receiver can only receive one wide-band signal with one center frequency. A multi-frequency digital receiver which can receive several center frequencies of signal simultaneously [1] is discussed in this paper. We also describe the theory and the design about digital receiver, introduce digital downconversion (DDC), FIR and decimation, digital beam forming and channel calibration. Based on the research, a realization of multi-frequency digital receiver based on FPGA is put forward. The analysis and simulation is made and the result shows the design of great performance.

• Periodical: Applied Mechanics and Materials (Volume 643)
• Pages: 117-123
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.643.117
• Online since: September 2014
• Authors: Yu Peng Liu*, Chao Du, Dong Lin Liu
• Keywords: Channel Calibration, Digital Beam Forming, Digital Downconversion, Multi-Frequency Digital Receiver

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