30kW laser experiments against drones

This paper will report on a first series of experiments of High Energy Laser effects on drones and drone components at TNO. After a description of the 30kW L3O laser facility at TNO, the experimental results will be discussed. The experiments were performed in an indoor facility and some considerations will be given on how to set up the...

Multi-sensor Fusion Applied to the Detection of Person-Borne Improvised Explosive Devices (PB-IEDs)

This paper describes the functionality of a sensor fusion toolbox designed to process data acquired by several state-of-the-art detection technologies during a trial on the detection of PB-IEDs, organized by TNO in 2016. The toolbox allows to define an operational scenario and determines successively the optimal combination of selected sensors...

Near field resolution measurements with the leaky wave antennas

N-path filters exploiting switched-series-R-C networks can realize high-Q blocking-tolerant band-pass filters. Moreover, their center frequency is flexibly programmable by a digital clock. Unfortunately, the time variant nature of these circuits also results in unwanted signal folding. This paper proves analytically that folding can be reduced...

Detection of IEDs with leaky wave antennas

A novel leaky wave antenna with ultrawide band radiation and high fidelity (low dispersivity) is presented. The suitability of this antenna for a hand-held GPR is evaluated through measurements in a quasi-monostatic setup of an antipersonnel mine and an anti-tank IED-like object buried in dry sand. © 2015 IEEE.

Dielectric characterisation of human tissue samples

The electrical properties of tissues samples are required for investigation and simulation purposes in biomedical applications of EM sensors. While available open literature mostly deals with ex-vivo characterization of isolated tissues, knowledge on dielectric properties of these tissues in their original environment is essential for an...

Real time indoor presence detection with a novel radar on a chip

A novel FMCW radar on a chip operating in the 24 GHz band has been used for presence detection in an office environment. Real time detection of small movements (i.e. typing) has been demonstrated. A comparison of the performances of the radar sensor and of the traditional intelligent lighting PIR sensor has been carried out. While the radar is...

Multipath Exploitation in an Urban Environment using a MIMO Surveillance Radar

Surveillance in an urban environment under all atmospheric conditions and situations can be performed by means of radars. The multipath created by buildings and moving targets can be exploited, for example in order to increase SNR. In this paper we present the initial results of the measurements of a moving target in a roadblock scenario in non...

Detection and Classification of Landmines using AR Modeling of GPR Data

In this paper we present some results on detection and classification of low metal content anti personnel (AP) landmines using a modified version of the Auto Regressive (AR) modeling algorithm presented in [1,2]. A statistical distance is computed between the AR coefficients of the measured GPR time signal and the AR coefficients of a reference...

A Texture Analysis of 3D Radar Images

In this paper a texture feature coding method to be applied to high-resolution 3D radar images in order to improve target detection is developed. An automatic method for image segmentation based on texture features is proposed. The method has been able to automatically detect weak targets which failed to be detected with intensity based...