Implementation of DDS chirp signal generator on FPGA

Synthetic aperture radar (SAR) is an active sensor that is widely used such as military purpose, land observation, and etc. The main characteristics of SAR system are as follow. First, as SAR uses microwave, it can be operated regardless of the weather and day-night conditions. SAR system uses the s...

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Bibliographic Details
Main Authors: Heein Yang, Sang-Burm Ryu, Hyun-Chul Lee, Sang-Gyu Lee, Sang-Soon Yong, Jae-Hyun Kim
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Chirp
chirp generator
Chirp signal
direct digital synthesizer
Field programmable gate arrays
FPGA
Generators
Signal generators
Signal resolution
Synthetic aperture radar
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Description
Summary:Synthetic aperture radar (SAR) is an active sensor that is widely used such as military purpose, land observation, and etc. The main characteristics of SAR system are as follow. First, as SAR uses microwave, it can be operated regardless of the weather and day-night conditions. SAR system uses the signal called chirp to acquire large bandwidth then it provides high-resolution images. The conventional analog type chirp generator of SAR system occupies large amount of space and weight. To implement chirp generator in small satellites, implementation of chirp generator on FPGA will be discussed in this paper.
ISSN:2162-1233
DOI:10.1109/ICTC.2014.6983343