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The Canadian Radarsat satellite was launched on November 4, 1995 and is now in routine operation. Radarsat's payload consists of a Synthetic Aperture Radar (SAR) imaging instrstrument, and it is the first operational satellite SAR with an antenna which can reconfigure its elevation beam electronically. The SAR Antenna is a large deployable slotted waveguide planar array (1.5m by 15m) operating at...
As one possible continuation of development of Masat-1, the first Hungarian satellite, in 2015, a group of student, from Faculty of Electrical Engineering and Informatics and Mechanical Engineering, decided to realize a PocketQube-class satellite, called Smog-1. Smog-1 is a 5 cm cubesat as PocketQube with less than 180 g mass. The aim of Smog-1 is to measure the radio frequency (RF) smog caused by...
Airbus DS GmbH has developed a Ka-band antenna assembly which offers steerable up- / downlink connections (receive, transmit) for satellites in low earth orbit (LEO). The antenna consists of a dual reflector antenna and a mechanical steering mechanism. The pointing mechanism comprises the steering unit, a standardised azimuth stage and an elevation stage, which is custom-made.
Joint Tactical Networks (JTN) Mobile User Objective System (MUOS) Reference Implementation Laboratory (MRIL) provided several measurement and data collection applications to support the US Northern Commands MUOS communication capability assessment expedition beyond MUOS beam coverage limits and up to the latitude at 89.5 degrees north in the summer of 2014. The measurement applications were designed...
This paper provides an overview of turnstile-based OMT designs of the Airbus Defence and Space product portfolio. Firstly build systems were used for ground stations and measurement feeds only, but latest developments have already found their way into space applications. Hence one aspect of the paper is to discuss, how the turnstile design can serve as a concept to encounter steadily growing demands...
This paper describes the antenna pattern testing solutions recently developed at MDA to perform the qualification and production tests of small high-gain and low-cost Ka-Band antennas for LEO and MEO satellites.
It is very essential to perform Passive Inter Modulation (PIM) measurement in multi-band communication satellites to avoid unwanted interference. Since source of PIM product can be any metallic or ferromagnetic objects, etc. it is very important to precisely identify the source of PEVI i.e from external environment or satellite transponder chain. For this reason, before conducting any PEVI measurement...
We investigate a computationally and memory efficient algorithm for radio frequency (RF) source-seeking with a single-wing rotating micro air vehicle (MAV) operating in an urban canyon environment. We present an algorithm that overcomes two significant difficulties of operating in an urban canyon environment. First, Global Positioning System (GPS) localization quality can be degraded due to the lack...
An increasing interest is arising on the exploitation of the Q/V bands for telecommunication applications, in order to cope with the greater and greater demand of bandwidth resources. The development of a mission in the Q/V band was preliminarily investigated by Space Engineering in the framework of an Italian Space Agency (ASI) program dedicated to the Q/V-band. Afterwards, the innovative QV-band...
COMS (Communication, Ocean and Meteorological Satellite) named Chunrian is aimed to develop domestic space proven technology of Ka-band switching transponder and multi-beam antenna technologies, and to exploit advanced multimedia communication services. This paper is purposed to study development design, manufacturing and test technology of Ka-band payload system, and to verify outstanding technology...
One of the aspects that the space and terrestrial terahertz imaging systems have in common is that they require state-of-the-art technology to achieve their ambitious goals. Although technology is advancing at a rapid pace in this frequency range, the requirements for these systems go well beyond what is currently available such that there are also no standards or calibration reference sources in...
This paper gives an overview on different research activities on electronically steerable antennas at Ka-band within the framework of the SANTANA project. In addition, it gives an outlook on future objectives, namely the perspective of testing SANTANA technologies with the projected German research satellite “Heinrich Hertz”.
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