Articles | Volume 15
12 Dec 2017
 | 12 Dec 2017

Comparison of digital beamforming algorithms for 3-D terahertz imaging with sparse multistatic line arrays

Bessem Baccouche, Patrick Agostini, Falco Schneider, Wolfgang Sauer-Greff, Ralph Urbansky, and Fabian Friederich

Cited articles

Ahmed, S. S., Schiessl, A., and Schmidt, L. P.: A Novel Fully Electronic Active Real-Time Imager Based on a Planar Multistatic Sparse Array, IEEE T. Microw. Theory, 59, 3567–3576,, 2011.
Baccouche, B., Keil, A., Kahl, M., Haring Bolivar, P., Loeffler, T., Jonuscheit, J., and Friederich, F.: A sparse array based sub-terahertz imaging system for volume inspection, in: Microwave Conference (EuMC), 2015 European, pp. 438–441,, 2015.
Baccouche, B., Agostini, P., Mohammadzadeh, S., Kahl, M., Weisenstein, C., Jonuscheit, J., Keil, A., Löffler, T., Sauer-Greff, W., Urbansky, R., Bolívar, P. H., and Friederich, F.: Three-Dimensional Terahertz Imaging With Sparse Multistatic Line Arrays, IEEE J. Sel. Top. Quant., 23, 1–11,, 2017.
Cafforio, C., Prati, C., and Rocca, F.: SAR data focusing using seismic migration techniques, IEEE T. Aero. Elec. Sys., 27, 194–207,, 1991.
Friederich, F., von Spiegel, W., Bauer, M., Meng, F., Thomson, M. D., Boppel, S., Lisauskas, A., Hils, B., Krozer, V., Keil, A., Loffler, T., Henneberger, R., Huhn, A. K., Spickermann, G., Bolivar, P. H., and Roskos, H. G.: THz Active Imaging Systems With Real-Time Capabilities, IEEE T. Terahertz Science and Technology, 1, 183–200,, 2011.
Short summary
In this contribution we compare the back-projection algorithm with our recently developed modified range migration algorithm for 3D terahertz imaging using sparse multistatic line arrays. Numerical and experimental investigations show that imaging results from the proposed range migration algorithm approximates very nicely these of the back-projection algorithm, yet with a significant computational saving. These results are appealing for time critical 3D terahertz imaging.