Performance of 3D laser radar through vegetation and camouflage

Steinvall, Ove; Larsson, Håkan; Gustafsson, Frank; Letalick, Dietmar; Chevalier, Tomas; Persson, Åsa; Andersson, Pierre

doi:10.1117/12.603546

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…These investigations are of course also relevant for full 3 D (flash) imaging ladars, presently not so well developed as range gated systems. Examples of results are found in a series of papers covering target and background characteristics 17,18 and snow reflectivity measurements 19 .…”

Section: Supporting Measurementsmentioning

confidence: 97%

Overview of range gated imaging at FOI

et al. 2007

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Section: Supporting Measurementsmentioning

confidence: 97%

Overview of range gated imaging at FOI

et al. 2007

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“…As seen from other experiments a high resolution laser radar has a look through vegetation capability which can be used both from airborne and ground vehicle mounted systems 10,11 . By combining multiple views it is possible to get images of targets separated from vegetation.…”

Section: Waveform Processingmentioning

confidence: 98%

Data collection and simulation of high range resolution laser radar for surface mine detection

Steinvall

Chevalier

Larsson

2006

Laser Radar Technology and Applications XI

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Rapid and efficient detection of surface mines, IED's (Improvised Explosive Devices) and UXO (Unexploded Ordnance) is of high priority in military conflicts. High range resolution laser radars combined with passive hyper/multispectral sensors offer an interesting concept to help solving this problem. This paper reports on laser radar data collection of various surface mines in different types of terrain.In order to evaluate the capability of 3 D imaging for detecting and classifying the objects of interest a scanning laser radar was used to scan mines and surrounding terrain with high angular and range resolution. These data were then fed into a laser radar model capable of generating range waveforms for a variety of system parameters and combinations of different targets and backgrounds. We can thus simulate a potential system by down sampling to relevant pixel sizes and laser/receiver characteristics. Data, simulations and examples will be presented.

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“…3 the single frames (left) in the upper 2 rows can be compared with the result of 25 images stabilized by using some image sharpening processing (right). It has been found through a manifold of experiments that except for very strong turbulence an average of 5-10 frames is sufficient to reduce target and atmospheric influence considerably [6,24].…”

Section: Test Proceduresmentioning

confidence: 99%

Advanced short-wavelength infrared range-gated imaging for ground applications in monostatic and bistatic configurations

Repasi¹,

Lutzmann²,

Steinvall

et al. 2009

Appl. Opt.

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Some advanced concepts for gated viewing are presented, including spectral diversity illumination techniques, non-line-of-sight imaging, indirect scene illumination, and in particular setups in bistatic configurations. By using a multiple-wavelength illumination source target speckles could be substantially reduced, leading to an improved image quality and enhanced range accuracy. In non-line-of-sight imaging experiments we observed the scenery through the reflections in a window plane. The scene was illuminated indirectly as well by a diffuse reflection of the laser beam at different nearby objects. In this setup several targets could be spotted, which, e.g., offers the capability to look around the corner in urban situations. In the presented measuring campaigns the advantages of bistatic setups in comparison with common monostatic configurations are discussed. The appearance of shadows or local contrast enhancements as well as the mitigation of retroreflections supports the human observer in interpreting the scene. Furthermore a bistatic configuration contributes to a reduced dazzling risk and to observer convertness.

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Performance of 3D laser radar through vegetation and camouflage

Cited by 11 publications

References 7 publications

Overview of range gated imaging at FOI

Overview of range gated imaging at FOI

Data collection and simulation of high range resolution laser radar for surface mine detection

Advanced short-wavelength infrared range-gated imaging for ground applications in monostatic and bistatic configurations

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