The first-ever dual-frequency multi-constellation Global Navigation Satellite Systems Reflectometry (GNSS-R) polarimetric measurements over boreal forests and lakes from the stratosphere are presented. Data were collected during the Swedish National Space Board (SNSB)/European Space Agency (ESA) sponsored Balloon Experiments for University Students (BEXUS) 19 stratospheric balloon experiment us...

This paper describes a proposal for a rapid, low cost, nanosatellite mission to demonstrate the concept of GPS ocean reflectometry and to investigate the feasibility of determining sea state for a future operational space-based storm warning systems. The aims of this mission are to prove the general feasibility of GPS ocean reflectometry, to demonstrate sea state determination and to enable the...

To isolate the metal-rich metallaboranes of group 6-9, we have performed reaction various intermediates, generally synthesized from low-temperature reactions [Cp∗WCl4] (Cp∗ ​= ​η5-C5Me5), [(Cp∗RhCl2)2], or [(Cp∗RuCl2)2] and [LiBH4 THF] with different transition metal carbonyl compounds. For example, thermolytic [Fe2(CO)9] an in situ generated intermediate, produced [LiBH4THF] afforded a trigona...

Nowadays, GNSS-Reflectometry (GNSS-R) can be a new promising remote sensing tool in the ocean, snow/ice and land surfaces, e.g., vegetation biomass monitoring. Although GNSS-R provides a potentially special L-band multi-angular and multi-polarization measurement, the theoretical vegetation scattering properties and mechanisms for GNSS-R are not understood clearly. In this paper, the GNSS-R vege...

This dissertation focuses on designing, fabricating and testing antennas that are suitable for operation within the V/W bands. In particular, this work focuses on the design of slotted rectangular waveguide antenna arrays and cross slotted waveguide fed horn antennas. These structures are known for their high efficiency and high circularly polarized gain that can be implemented in satellite and...

Modelling and Measurement of the Land Mobile Satellite MIMO Radio Propagation Channel Page 3 of 207 Abstract Three crucial factors in land mobile satellite (LMS) communication systems are the quality of service (QoS), spectral efficiency and cost. The QoS in a LMS system often suffers due to high link path loss due to the vast distances covered, signal shadowing and blockage, and a high link de...