Distance Estimation for Radar Systems Using DS-UWB Signals

In this paper, we propose a distance estimation scheme
for radar systems using direct sequence ultra wideband (DS-UWB)
signals. The proposed distance estimation scheme averages out the
noise by accumulating the correlator outputs of the radar, and thus,
helps the radar to employ a short-length DS-UWB signal reducing
the correlation processing time. Numerical results confirm that the
proposed distance estimation scheme provides a better estimation
performance and a reduced correlation processing time compared
with those of the conventional DS-UWB radars.





References:
<p>[1] M. G. M. Hussain, &ldquo;Ultra-wideband impulse radar: An overview of the
principles,&rdquo; IEEE Aerosp. Electron. Syst. Mag., vol. 13, no. 9, pp. 9-14,
Sep. 1998.
[2] I. Y. Immoreev, S. Samkov, and T.-H. Tao, &ldquo;Short-distance ultrawideband
radars,&rdquo; IEEE Aerosp. Electron. Syst. Mag., vol. 20, no. 6, pp. 9-14, June
2005.
[3] H. Dominik, &ldquo;Short range radar-status of UWB sensors and their applications,&rdquo;
in Proc. European Radar Conf. (EuRAD), pp. 251-254, Munich,
Germany, Oct. 2007.
[4] S. J. Xu, Y. Chen, and P. Zhang, &ldquo;Integrated radar and communication
based on DS-UWB,&rdquo; in Proc. Int. Conf. Ultrawideband and Ultrashort
Impulse Signals (UWBUSIS), pp. 142-144, Sevastopol, Ukraine, Sep.
2006.
[5] Y. Nakayama and R. Kohno, &ldquo;Novel variable spreading sequence length
system for improving the processing speed of DS-UWB radar,&rdquo; in Proc.
Int. Conf. Intelligent Transport Syst. Telecommun. (ITST), pp. 357-361,
Phuket, Thailand, Oct. 2008.
[6] J. Tsuchiya, M. Hayashi, and R. Kohno, &ldquo;Platoon characteristics of
automatic vehicle speed control for vehicles equipped with DS-UWB
radar,&rdquo; in Proc. Int. Symp. Spread Spectrum Techniques and Applications
(ISSSTA), pp. 125-130, Taichung, Taiwan, Oct. 2010.
[7] S. G. Kang, Y. Lee, J. Kim, D. Chong, J. Baek, and S. Yoon, &ldquo;A distance
measuring scheme based on repeated use of PN sequence,&rdquo; in Proc. Asia-
Pacific Conf. Commun. (APCC), CD-ROM, Kota Kinabalu, Malaysia, Oct.
2011.
[8] H. Chen, T. A. Gulliver, W. Li, and H. Zhang, &ldquo;Performance of ultrawideband
communication systems using DS-SS PPM with BCH coding
over a fading channel,&rdquo; in Proc. Military Commun. Conf. (MILCOM), pp.
1-5, Washington, DC, Oct. 2006.
[9] B. Hu and N. C. Beaulieu &ldquo;Accurate evaluation of multiple-access
performance in TH-PPM and TH-BPSK UWB systems,&rdquo; IEEE Trans.
Commun., vol. 52, no. 10, pp. 1758-1766, Oct. 2004.
[10] K. M. Strohm, H.-L. Bloecher, R. Schneider, and J. Wenger, &ldquo;Development
of future short range radar technology,&rdquo; in Proc. European Radar
Conf. (EuRAD), pp. 165-168, Paris, France, Oct. 2005.
[11] H. Liu, L. Hao, and P. Fan, &ldquo;A low-complexity scheduling scheme for
multiuser MIMO system based on Tomlinson-Harashima precoding,&rdquo; in
Proc. Int. Conf. Inform. Theory and Inform. Security (ICITIS), pp. 981-
984, Beijing, China, Dec. 2010.
[12] J. Brown, &ldquo;Efficient nonlinear solvers for nodal high-order finite elements
in 3D,&rdquo; J. Scientific Computing, vol. 45, no. 1-3, pp. 48-63, Oct.
2010.</p>