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Paratroopers in future operations

100%

Boldizsar G.

Security and Defence Quarterly

2014

vol. 3

issue 2

46-60

Between the two World Wars paratroopers or airborne units were set up in preparation for the coming conflicts as the means of the vertical envelopement. During World War II several airborne operations were conducted. The strength of paratroopers deployed ranged from the individual troopers to tens of thousands. During the Cold War era militaries in different conflicts also used parachutes as a delivery system, airborne and special forces units for combat behind enemy lines many times. The development of helicopter technology modernized airborne operations and gave a possibility to combine it with air assult capabilities. Today’s operations require rapid deployment of forces to stop the escalation of any conflict and handle the situation, finally to restore peace, normalize the situation and life conditions. To fulfil such requirements paratrooper units are one of the most appropriate ones. Thank to their high readiness, medical and mental conditions, moral and fighting spirit, airborne or air-transportable weaponry and equipment they can operate successfully in an extreme, unknown environment till the arrival of the main stabilisation forces.

Geometric correction of APEX hyperspectral data

86%

Vreys K., Iordache M.-D., Biesemans J., Meuleman K.

Miscellanea Geographica. Regional Studies on Development

2016

vol. 20

issue 1

11-15

Hyperspectral imagery originating from airborne sensors is nowadays widely used for the detailed characterization of land surface. The correct mapping of the pixel positions to ground locations largely contributes to the success of the applications. Accurate geometric correction, also referred to as “orthorectification”, is thus an important prerequisite which must be performed prior to using airborne imagery for evaluations like change detection, or mapping or overlaying the imagery with existing data sets or maps. A so-called “ortho-image” provides an accurate representation of the earth’s surface, having been adjusted for lens distortions, camera tilt and topographic relief. In this paper, we describe the different steps in the geometric correction process of APEX hyperspectral data, as applied in the Central Data Processing Center (CDPC) at the Flemish Institute for Technological Research (VITO, Mol, Belgium). APEX ortho-images are generated through direct georeferencing of the raw images, thereby making use of sensor interior and exterior orientation data, boresight calibration data and elevation data. They can be referenced to any userspecified output projection system and can be resampled to any output pixel size.

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1 Miscellanea Geographica. Regional Studies on Development

1 Security and Defence Quarterly

1 Biesemans J.

1 Boldizsar G.

1 Iordache M.-D.

1 Meuleman K.

1 Vreys K.

1 2016

1 2014

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Paratroopers in future operations

Geometric correction of APEX hyperspectral data