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3 Journal of Telecommunications and Information Technology

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Ultra-wideband 3D image processing for improving landmine detection with GPR

Ligthart E. E., Yarovoy A. G., Roth F., Ligthart L. P.

Journal of Telecommunications and Information Technology

2005

nr 2

9-15

This paper describes a new landmine detection algorithm starting from high resolution 3D ground penetrating radar (GPR) images. The algorithm consists of two procedures, object detection and object classification; both strongly depend on the properties of 3D GPR images. The algorithm has been tested on data measured with an ultrawideband (UWB) video impulse radar (VIR) system developed by the International Research Centre for Telecommunications and Radar (IRCTR). It was found that the algorithm is able to detect all landmines (including difficult to detect M14 mines) and classifies almost all landmines correctly with a large reduction in the number of false alarms caused by clutter. It turns out that for clutter removal it is most effective to eliminate detected objects with a small height.

Doppler polarimetric ground clutter identification and suppression for atmospheric radars based on co-polar correlation

Moisseev D., Unal C., Russchenberg H., Ligthart L.P.

Journal of Telecommunications and Information Technology

2001

nr 4

3-6

A new clutter suppression technique that uses both Doppler and polarimetric information is presented. Polarimetric properties of the target and clutter are calculated per Doppler frequency cell and based on this information clutter suppression is performed. This new clutter suppression technique is demonstrated with radar measurements of precipitation made by the Delft atmospheric research radar (DARR).

A dedicated computer system for FM-CW radar applications

Heijnen S.H., Sinttruijen J.S. van, Zwan F.W. van der, Ligthart L.P.

Journal of Telecommunications and Information Technology

2001

nr 4

21-25

In this paper, a DSP based computer system for FM-CW radar applications is described. Besides data acquisition and storage, the computer system will also be used for front-end data processing and system control. Processing includes filtering and clutter suppression. The radar for which the computer is designed is a multi parameter atmospheric profiler capable of doing Doppler and polarimetric measurements. The computer system will allow for a measurement of the full polarimetric scattering matrix over 512 range cells and 512 Doppler cells in 2 s. Radar system control includes the timing and the settings of the radar system together with linearity correction of the sweep oscillator.