High-speed ground moving target detection research using triangular modulation FMCW

Abstract

The frequency modulated continuous wave (FMCW) radar has the characteristics of low probability of interception, good hidden property and the ability to counter anti-radiation missiles. This paper proposes a new method for high-speed ground moving target detection (GMTD) using triangular modulation FMCW. According to the characteristic of the opposite range shift induced by the upslope and downslope modulation FMCW, the upslope and downslope are imaged, respectively. After compensation of continuous motion of the platform and time difference between upslope and downslope signals for imaging, the moving target can be detected through displaced phase center antenna (DPCA) technology. When the moving target is detected, the moving target image is extracted, and correlation processing is used to obtain the range shift, which can be used to estimate the target radial velocity, and further to find the real position of the target. The effectiveness of this method is verified by the result of computer simulation.

Keywords

ground moving target detection (GMTD) / triangular modulation frequency modulated continuous wave (FMCW) / correlation processing

References

[1] Meta A, Hoogeboom P. Development of signal processing algorithms for high resolution airborne millimeter wave FMCW SAR. In: Proceedings of IEEE International Radar Conference 2005. Arlington: IEEE, 2005, 326-331

[2] Meta A. Signal processing of FMCW synthetic aperture radar data. Dissertation for the Doctoral Degree. Delft: Delft University of Technology, 2006

[3] Meta A, Hoogeboom P. Signal processing algorithms for FMCW moving target indicator synthetic aperture radar. In: Proceedings of IEEE International Geoscience and Remote Sensing Symposium (IGARSS’05). Seoul: IEEE, 2005, 1: 316-319

[4] Bao Z, Xing M D, Wang T. Radar Imaging Techniques. Beijing: Publishing House of Electronics Industry, 2005, 25 (in Chinese)

[5] De Wit J J M., Meta A, Hoogeboom P. Modified range-Doppler processing for FM-CW synthetic aperture radar. IEEE Geoscience and Remote Sensing Letters, 2006, 3(1): 83-87

[6] Meta A, Hoogeboom P, Lighart L P. Correction of the effects induced by the continuous motion in airborne FMCW SAR. In: Proceedings of IEEE Conference on Radar 2006. Verona, NY: IEEE, 2006, 358-365

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 60502044).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg