pp. 3187-3195 | Article Number: iejme.2016.260
Published Online: November 01, 2016
Article Views: 632 | Article Download: 678
Radar sensors are wide spread as ranging and navigation systems, especially in ATC and prevention of wings’ collisions. Traffic handing on routes and commuter areas is held with their use. Therefore, improving the noise immunity of radar sensors remains as priority, especially in aviation sector. In this connection, we consider a synthesis method of complex signals with irregular bi-level structure envelope of power spectrum. We conducted analysis of synthetic signal’s spectral characteristics. We described the possibility of the use of such signals for frequency clutter rejection localized in a relatively small range of Doppler frequency shifts. The frequency rejection of ground reflection is proposed to improve the noise immunity of radar sensors.
Keywords: Radar sensors, wideband signals, bi-level irregular structure, power spectrum, noise immunity improvement
Bystrov, N. E. (2005) Pseudorandom amplitude-phase shift keying signals synthesis and processing methods in radars with quasicontinuous transceiving mode. PhD thesis: Novgorod State University, Velikiy Novgorod, Russia, 150 p.
Chebotarev, D. V. (2007) Compensation processing methods of quasicontinuous wideband signals. PhD thesis: Novgorod State University, Velikiy Novgorod, Russia, 165 p.
Chen, P. H. et al. (2012) Portable real-time digital noise radar system for through-the-wall imaging. Transactions on Geoscience and Remote Sensing, 50(10), 4123-4134.
Ipatov, V. P. (1992) Periodic discrete signals with optimum correlation properties. Moscow: Radio i Svyaz, 152 p.
Ipatov, V. P. (1979) Ternary sequences with ideal periodic autocorrelation. Radio Engineering and Electronic Physics, 24(10), 75-79.
Kutuzov, V. M. (1996) Synthesis of non-regular multitone signals and algorithms of their processing. 3rd International Conference on Signal Processing. Beijing, China 14-18 oct.
Levanon, N., Mozeson, E. (2004) Radar Signals. New York, USA: Wiley, 427 p.
Liu, J. et al. (2015) Change detection in synthetic aperture radar images based on unsupervised artificial immune systems. Journal of Applied Soft Computing, 34, 151-163.
Nathanson, F. E. (1969) Radar Design Principles, 1st Ed. New York: McGraw-Hill, 720 p.
Pralon, L., Pompeo, B., Fortes, J. M. (2015) Stochastic analysis of random frequency modulated waveforms for noise radar systems. Transactions on Aerospace and Electronic Systems, 51(2), 1447-1461.
Richards, M. (2005) Fundamentals of Radar Signal Processing. New York: McGraw-Hill, 513 p.
Schleher, D. C. (1991) MTI and Pulsed Doppler Radar. Boston: Artech, 639 p.
Sheen, D. M. (2015) Noise analysis for near-field 3D FM-CW radar imaging systems. SPIE Defense+ Security. International Society for Optics and Photonics, 946206-946206-11.
Skolnik, M. (2001). Introduction to Radar Systems, 3rd ed. McGraw-Hill, New York, 513 p.
Skolnik, M. I., (2008) Radar Handbook. New York, USA: McGraw-Hill Professional, 1352 p.
Yao, K., Lorenzelli, F., Chen, C. E. (2013) Detection and Estimation for Communication and Radar Systems. Cambridge University Press, 336 p.