A CFAR Circuit with Multiple Detection Cells for Automotive UWB Radars
Summary :
Future high-resolution short-range automotive radar will have a higher false alarm probability than the conventional low-resolution radar has. In a high-resolution radar, the reception signal becomes sensitive to the difference between intended and unintended objects. However, automotive radars must distinguish targets from background objects that are the same order of size; it leads to an increase in the false alarm probability. In this paper, a CFAR circuit for obtaining the target mean power, as well as the background mean power, is proposed to reduce the false alarm probability for high-resolution radars working in automotive environments. The proposed method is analytically evaluated with use of the characteristic function method. Spatial correlation is also considered in the evaluation, because the sizes of the both target and background objects approach the dimension of several range cells. Result showed the proposed CFAR with use of two alongside range cells could reduce the ratio of 6.4 dB for an example of an automotive situation.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E93-B No.6 pp.1574-1582
- Publication Date
- 2010/06/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E93.B.1574
- Type of Manuscript
- PAPER
- Category
- Sensing
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Keyword
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Satoshi TAKAHASHI, "A CFAR Circuit with Multiple Detection Cells for Automotive UWB Radars" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 6, pp. 1574-1582, June 2010, doi: 10.1587/transcom.E93.B.1574.
Abstract: Future high-resolution short-range automotive radar will have a higher false alarm probability than the conventional low-resolution radar has. In a high-resolution radar, the reception signal becomes sensitive to the difference between intended and unintended objects. However, automotive radars must distinguish targets from background objects that are the same order of size; it leads to an increase in the false alarm probability. In this paper, a CFAR circuit for obtaining the target mean power, as well as the background mean power, is proposed to reduce the false alarm probability for high-resolution radars working in automotive environments. The proposed method is analytically evaluated with use of the characteristic function method. Spatial correlation is also considered in the evaluation, because the sizes of the both target and background objects approach the dimension of several range cells. Result showed the proposed CFAR with use of two alongside range cells could reduce the ratio of 6.4 dB for an example of an automotive situation.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.1574/_p
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@ARTICLE{e93-b_6_1574,
author={Satoshi TAKAHASHI, },
journal={IEICE TRANSACTIONS on Communications},
title={A CFAR Circuit with Multiple Detection Cells for Automotive UWB Radars},
year={2010},
volume={E93-B},
number={6},
pages={1574-1582},
abstract={Future high-resolution short-range automotive radar will have a higher false alarm probability than the conventional low-resolution radar has. In a high-resolution radar, the reception signal becomes sensitive to the difference between intended and unintended objects. However, automotive radars must distinguish targets from background objects that are the same order of size; it leads to an increase in the false alarm probability. In this paper, a CFAR circuit for obtaining the target mean power, as well as the background mean power, is proposed to reduce the false alarm probability for high-resolution radars working in automotive environments. The proposed method is analytically evaluated with use of the characteristic function method. Spatial correlation is also considered in the evaluation, because the sizes of the both target and background objects approach the dimension of several range cells. Result showed the proposed CFAR with use of two alongside range cells could reduce the ratio of 6.4 dB for an example of an automotive situation.},
keywords={},
doi={10.1587/transcom.E93.B.1574},
ISSN={1745-1345},
month={June},}
Copy
TY - JOUR
TI - A CFAR Circuit with Multiple Detection Cells for Automotive UWB Radars
T2 - IEICE TRANSACTIONS on Communications
SP - 1574
EP - 1582
AU - Satoshi TAKAHASHI
PY - 2010
DO - 10.1587/transcom.E93.B.1574
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2010
AB - Future high-resolution short-range automotive radar will have a higher false alarm probability than the conventional low-resolution radar has. In a high-resolution radar, the reception signal becomes sensitive to the difference between intended and unintended objects. However, automotive radars must distinguish targets from background objects that are the same order of size; it leads to an increase in the false alarm probability. In this paper, a CFAR circuit for obtaining the target mean power, as well as the background mean power, is proposed to reduce the false alarm probability for high-resolution radars working in automotive environments. The proposed method is analytically evaluated with use of the characteristic function method. Spatial correlation is also considered in the evaluation, because the sizes of the both target and background objects approach the dimension of several range cells. Result showed the proposed CFAR with use of two alongside range cells could reduce the ratio of 6.4 dB for an example of an automotive situation.
ER -
English
