VIA Technologies EPIA SN-Series Specifications download pdf (Page 45)

FASTER

 The Ground Segment infrastructure

 The Airborne internal management and computing segment

 The Airborne external POD, equipped with the sensing devices

A detailed description of each unit is given in Chapter 6 where the FASTER

Engineering Model is described. The major differences between the final system and the

EM are the sensing device, and the positioning of the Inertial Measurement Unit and the

GPS receiver. For safety reasons, they have been installed inside the airborne internal

management and computing unit in the EM, instead of being mounted and referenced

inside the external POD. Having the EM reduced functionalities, a single small frame

camera has been used instead of the three cameras system.

The three cameras selected for the FASTER final system, the Prosilica GE4000

model, have already been employed in aerial photography. The CCD matrix has a pixel

pitch of 9 µm which is almost twice the size of standard cameras. It also has an electronic

global shutter, which avoids image smear due to different exposure time between the first

and the last row of the matrix [Ref (16)]. The camera fulfills RE.P.06 having a maximum

frame of 5 fps at full resolution. It is powered by a 12 V bus and has a maximum power

consumption of 6 W (18 W total for three cameras during acquisition); cameras weight

400 g each. Images are downloaded via a gigabit Ethernet connection which is able to

withstand the high camera throughput. The Prosilica GE4000 has an F-mount lens mount

which is used to connects the Zeiss Distagon lens. The Zeiss Distagon 28 mm F/2.8 [Ref.

(17)] and 21 mm F/2.8 [Ref. (18)] guarantee respectively a 90° FOV and a 99° FOV. The

28 mm with the F-mount lens mount weights 620 g while the 21 mm 430 g (Figure 29).

Figure 29: Prosilica GE4000 [Ref. (19)] and the Zeiss Distagon 28 mm F/2.8 [Ref.(20)]

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VIA Technologies EPIA SN-Series Specifications Page 45