Portable Doppler Tracking Ground Station

This thesis analyses the possibility of creating a portable Doppler tracking ground station using commercial of the shelf components. This solution is called DopTrackBox and is based on TU Delft’s DopTrack. This system uses the Doppler shift of radio signals received from satellites to analyse their location and velocity. Different experiments...

Combined laser ranging and communication on laser terminal CubeCat and TNO’s optical ground station

Laser communication offers high data rates and more bandwidth capacity compared to radio but is also advantageous in terms of power and volume. However, the required pointing accuracy and atmospheric influence pose stringent requirements on the system which form the main challenges for this type of communication. This is where laser ranging...

Design and construction of a 4 KW groundstation for the laddermill

Introduction to possible means of experiment operations on the space station

The present plans for space stations are evolutionary developments from Skylab, ASTP, Spacelab, and recently, MIR. Other forbears can be identified as well, and it is instructive to compare current designs with the drawings that appeared in magazines around 1950, when spaceflight first appeared feasible. The space station that is taken as the...

Studie naar de opzet van een nationaal ERS-1 datacentrum - Phase-A/B study of a national ERS-1 data centre

Within the framework of the National Remote Sensing Programme and under contract with the Netherlands Remote Sensing Board (BCRS), the National Aerospace Laboratory NLR has carried out a Phase-A/B study of a national ERS-1 data and information centre. The first European Remote Sensing Satellite (ERS-1) is due to be launched by the European Space...

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.

IRAS end-to-end datasystem

The development of a complex data system involving many disciplines requires a strict control from the early phases of a project onwards, to ensure that all requirements are met within the technical and financial constraints. To exercise such control becomes more difficult when different institutes/organizations contribute to the system, the...

Improvement of the superposition of geographical data in KOSMOSS

Since mid 1982, the Royal Netherlands Meteorological Institute KNMI has to its possession a ground station (KOSMOSS), which receives and processes high resolution imagery, acquired from Tiros-N type weather satellites. To determine the weather positions in the images, the ground station is equipped with the capability to superpose, in real time,...

On-line superposition of geographical data to tiros-N type meteorological satellite images

A method is described, by which geographical data are superposed in real time to the high resolution HRPT imagery, received from the TIROS-N series satellites. The superposition of additional geographical data is important for an accurate position determination of the image data. Computations necessary for the transformation, conversion and...

Dissemination of ERS-a low bitrate data and the use od L-band receiving stations

The dissemination of ERS-1 real-time thematic products via the Global Telecommunication System, the ECS satellite telecom system or the Eiuronet packet switching network is analysed and evaluated against the use of direct-receive L-band stations as used for NOAA weather image reception.

Measurement of radiation patterns of aircraft antennas in non-steady flight

Instationary methods in measuring radiation patterns of aircraft antennas are described.