Ajou University repository

Development and Comparison of DDS and Multi-DDS Chirp Waveform Generator
  • Kim, Kyeong Rok ;
  • Kim, Song ;
  • Ki, Choong Ho ;
  • Kim, Tu Hwan ;
  • Yang, Heein ;
  • Kim, Jae Hyun
Citations

SCOPUS

0

Citation Export

Publication Year
2019-07-01
Journal
International Geoscience and Remote Sensing Symposium (IGARSS)
Publisher
Institute of Electrical and Electronics Engineers Inc.
Citation
International Geoscience and Remote Sensing Symposium (IGARSS), pp.8606-8609
Keyword
chirpFPGAIRFmulti-DDSSAR
Mesh Keyword
chirpChirp waveformsDigital partsDigital systemDigital waveform generatorsImpulse response functionsmulti-DDSWaveform quality
All Science Classification Codes (ASJC)
Computer Science ApplicationsEarth and Planetary Sciences (all)
Abstract
A synthetic aperture radar (SAR) is electromagnetic equipment which is composed of digital parts. It transmits and receives microwaves for observing long distance. In digital system, system clock is an important factor that determines waveform resolution. The SAR system is consist of FPGA, DAC, and other digital parts. In the SAR system, clock of FPGA and DAC are an upper limit for generation of chirp signal. However, digital parts are mostly expensive due to its specification. In this paper, we develop two types of digital waveform generator and propose a method for chirp waveform generation using relatively low cost parts. We test the chirp waveform generators. One used Virtex-5 and one DDS, and the other used Kintex-7 and four DDSs. In addition, we compare the waveform quality using impulse response function. As a results, peak to side-lobe ratio is -14.68 dB and -11.54 dB, and integrated side-lobe ratio is -21.78 dB and -15.48 dB, relatively.
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/36454
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85077714939&origin=inward
DOI
https://doi.org/10.1109/igarss.2019.8899178
Type
Conference
Show full item record

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Kim, Jae-Hyun Image
Kim, Jae-Hyun김재현
Department of Electrical and Computer Engineering
Read More

Total Views & Downloads

File Download

  • There are no files associated with this item.