Crew work station architecture and module control station evolution study: Multimedia documentation file system, final report

The Document File System (DFS) , delivered under the ESA Crew Work Station Architecture & Module Control Station Evolution study contract, has been developed as a subsystem of the Crew Work Station Test-bed at Estec. The kernel is based on a commercially available full-text multimedia database program "Freebase" of CAT-Benelux, which has been...

Optical mass storage space qualification study. Part I. Final report and executive summary

This study -under contract with ESA/ESTEC- concerns the feasibility of upgrading commercially optical mass storage equipment. It addresses the environmental conditions expected in Columbus, and the verification procedures (Part II). From the optical storage devices Philips is involved in, the CD-ROM-CM200 serie is selected as a promising space...

Optical data storage in space missions

Optical mass storage of digital data is attractive for use in space missions. This is the result of an ESA/ESTEC study performed by the Dutch National Aerospace Laboratory and Van der Heem Electronics (Signaal/Philips). Upgrading of commercial devices seems feasible, while ground support can be done by common equipment and software. In this way...

Recommendations for the concept of a global civil satellite navigation system; based on comparison of NAVSAT and GRANAS

In order to come to a unified concept for the future civil satellite navigation system, it was studied which characteristics of the two major proposed concepts, NAVSAT and GRANAS, would be preferred for such a system. This investigation encompassed the preferred orbit configuration, the satellite position determination principle and the...

System design study for an electronic document delivery system

The objectives of this study are to define the technical facilities which are required for electronic document delivery over a satellite link. In this report, the user requirements and system requirements are analysed for the complete chain of Electronic Document Delivery (EDD) facilities, consisting of archiving, transmission and reproduction...

A simulation tool for the study of satellite based navigation systems

Study of NAVSAT control segment characteristics: part III: executive summary

On the proposed satellite-based navigation system NAVSAT, a study has been performed concerning the characteristics of the control segment. Starting from the outcome of earlier preliminary studies of ESA, this study shows that the concept is feasible.

Study of NAVSAT control segment characteristics: part I: elements of a control segment concept

Elektromagnetische compatibiliteit op elektronicakaarten

Determination of performance and stability characteristics from dynamic longitudinal manoeuvres with the Fokker F28 transport aircraft: Description of the inertial strapdown system

A very accurate measurement and data recording system has been developed to evaluate the applicability of a dynamic flight test technique. By this technique, performance data are extracted from a single dynamic manoeuvre of an aircraft. Application of the technique reduces the large amount of flight hours that would be required for the...

Image data security in the concept of the agricultural real time imaging satellite system (ARTISS): EUROCON '77 paper

The user's requirement to have quick and exclusive access to satellite imagery of the own territory leads to decentralized reception and processing of the image data. The exclusiveness of imagery requires additional security measures for the satellite-user station link. Two methods for protection of the transmission of image data are proposed: ...

Image data security in the concept of the agricultural real time imaging satellite system (artiss)

The study on image data security is directed to the requirement for exclusive access to satellite imagery in the concept of the Agricultiiral Real Time Imaging Satellite System (ARTISS). The security assessment indicates that user survey requests are handled confidentially and it shows the access vulnerability of the transmission of image data...