Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Â÷·®¿ë FMCW ·¹ÀÌ´õÀÇ Å½Áö ¼º´É ºÐ¼® ¹× ½Åȣ󸮺Π°³¹ß |
¿µ¹®Á¦¸ñ(English Title) |
The analysis of the detection probability of FMCW radar and implementation of signal processing part |
ÀúÀÚ(Author) |
±è»óµ¿
ÇöÀ¯Áø
ÀÌÁ¾ÈÆ
ÃÖÁØÇõ
¹ÚÁ¤È£
¹Ú»óÇö
Sang-Dong Kim
Eugin Hyun
Jong-Hun Lee
Jun-Hyeok Choi
Jung-Ho Park
Sang-Hyun Park
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¿ø¹®¼ö·Ïó(Citation) |
VOL 14 NO. 12 PP. 2628 ~ 2635 (2010. 12) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â Â÷·®¿ë FMCW(Frequency Modulated Continuous Wave) ·¹ÀÌ´õÀÇ µµÇ÷¯ ÁÖÆļö¿Í ¾Æ³¯·Î±×-µðÁöÅÐ º¯È¯±â ºñÆ® ¼ö¿¡ µû¸¥ ŽÁö ¼º´É ºÐ¼® ¹× ½Åȣ󸮺Π°³¹ßÀ» ÁøÇàÇÏ°íÀÚ ÇÑ´Ù. ¼º´É Æò°¡¸¦ À§ÇÑ FMCW ·¹ÀÌ´õÀÇ ½Ã½ºÅÛ ¸ðµ¨Àº ¼Û½ÅºÎ¿Í ¼ö½ÅºÎ·Î ±¸¼ºµÇ¾î ÀÖÀ¸¸ç ä³ÎÀº °¡¿ì½Ã¾È ÀâÀ½ ȯ°æÀ» »ç¿ëÇÑ´Ù. À̷аú ½Ã¹Ä·¹À̼ÇÀ» ÅëÇؼ ½Ã½ºÅÛ ¸ðµ¨À» °ËÁõÇÑ´Ù. ¼ö½ÅºÎ¿¡¼´Â ¼ö½Å ½ÅÈ£¿Í ±âÁØ ½ÅÈ£»çÀÌÀÇ ºÎÁ¤ÇÕÀ¸·Î ÀÎÇÑ ÁÖÆļö ¿ÀÂ÷°¡ ¹ß»ýÇÏ°Ô µÈ´Ù. 75cmÀÇ ºÐÇشɸ¦ °®´Â FMCW ·¹ÀÌ´õ¿¡¼ µµÇ÷¯ ÁÖÆļö°¡ ¾à 38KHzÀÌÇÏÀÎ °æ¿ì ŽÁö ¼º´ÉÀÇ ¿È°¡ ¹ß»ýÇÏÁö ¾ÊÀ½À» ¾Ë ¼ö ÀÖ´Ù. ¾Æ³¯·Î±×-µðÁöÅÐ º¯È¯±â ºñÆ®¿¡ µû¸¥ ŽÁö ¼º´ÉÀº 6ºñÆ®°¡ ÃÖ¼ÒÀÇ ºñÆ®·Î °áÁ¤µÉ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ´Ù. ±×¸®°í FPGA¸¦ ÀÌ¿ëÇÏ¿© µðÁöÅÐ ¼Û½Å ÆÄÇü ¹ß»ý±â¸¦ À§ÇÑ ÁýÀû µðÁöÅÐ ½Åµð»çÀÌÀú(Direct Digital Synthesis) ĨÀ» ±â¹ÝÇÑ FMCW ·¹ÀÌ´õ ½Åȣ󸮺θ¦ ¼³°è ¹× ±¸ÇöÀ» ÁøÇàÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
This paper analyzes the detection probability of FMCW (Frequency Modulated Continuous Wave) radar based on Doppler frequency and analog-digital converter bit and designs and implements signal processing part of FMCW radar. For performance evaluation, the FMCW radar system consists of a transmitted part and a received part and uses AWGN channel. The system model is verified through analysis and simulation. Frequency offset occurs in the received part caused by the mismatching between the received signal and the reference signal. In case of Doppler frequency less than about 38KHz, performance degradation of detection does not occur in FMCW radar with 75cm resolution The analog-digital converter needs at least 6 bit in order not to degrade the detection probability. And, we design and implement digital signal processing part based on DDS chip of digital transmitted signal generator for FMCW radar.
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Å°¿öµå(Keyword) |
FMCW
·¹ÀÌ´õ
µµÇ÷¯ ÁÖÆļö
¾Æ³¯·Î±×-µðÁöÅÐ º¯È¯±â
½Åȣ󸮺Î
FMCW
radar
Doppler frequency
analog-digital converter
digital signal processing
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ÆÄÀÏ÷ºÎ |
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