We have a wide range of talent and expertise at the Catapult, and our staff are continually working on new research and development in their focus areas. The below library details a sample of publications authored by members of the Catapult. Please click on the links to read the abstract and to access the full publication.
Catapult Co-Author: Cristian Rossi
Topographical information is of fundamental interest for a wide range of disciplines including glaciology, agriculture, communication network planning, or hazard management. In volcanology, elevation data are of particular importance when assessing material flows throughout a volcanic system. To obtain accurate estimates of time-varying topography in volcanic active regions, high-resolution digital elevation models (DEMs) are required. To monitor and evaluate topographical changes and especially volumetric gains and losses during the 2014–2015 Bárðarbunga eruption, Iceland, multi-temporal TanDEM-X DEM sequences were evaluated.
Catapult Author: Edmond Boulle
Extensive liability exposure for launching States in international space law has resulted in a number of States promulgating indemnity and third party liability (TPL) insurance requirements as part of the authorisation procedure under national law. Though the detailed requirements vary across national laws, a common approach is discernible: The risk to the State posed by each new activity, and consequently the level of TPL insurance cover the prospective licensee must obtain (where applicable to the activity in question for which authorisation is sought) is determined by the regulator on a case-by-case basis.
Catapult Author: Cristian Rossi
This chapter provides an overview of the possibility to derive paddy rice plant heights with spaceborne bistatic SAR interferometry (InSAR). By using the only available interferometer in space, TanDEM-X, an investigation of rice crops located in Turkey is performed. Before analyzing the main outcomes, an introduction to the generation of elevation models with InSAR is provided, with a special focus on the agricultural land cover.
Catapult Contributor: Prof. Nick Veck MBE
Radar backscatter from forest canopies is related to forest cover, canopy structure and aboveground biomass (AGB). The S-band frequency (3.1–3.3 GHz) lies between the longer L-band (1–2 GHz) and the shorter C-band (5–6 GHz) and has been insufficiently studied for forest applications due to limited data availability. In anticipation of the British built NovaSAR-S satellite mission, this study evaluates the benefits of polarimetric S-band SAR for forest biophysical properties. To understand the scattering mechanisms in forest canopies at S-band the Michigan Microwave Canopy Scattering (MIMICS-I) radiative transfer model was used. S-band backscatter was found to have high sensitivity to the forest canopy characteristics across all polarisations and incidence angles.
Catapult Contributor: Prof. Nick Veck MBE
Assessments of forest cover, forest carbon stocks and carbon emissions from deforestation and degradation are increasingly important components of sustainable resource management, for combating biodiversity loss and in climate mitigation policies. Satellite remote sensing provides the only means for mapping global forest cover regularly. However, forest classification with optical data is limited by its insensitivity to three-dimensional canopy structure and cloud cover obscuring many forest regions. Synthetic Aperture Radar (SAR) sensors are increasingly being used to mitigate these problems, mainly in the L-, C- and X-band domains of the electromagnetic spectrum.
Catapult Contributor: Terri Freemantle
People living in cities currently represent 54% of the total world population compared to 34% in 1960. Alongside this continued urbanisation, the world population is ageing rapidly. People aged 65 and older are expected to make up 22% of the total world population by 2050. The number of people aged 80 and older will also quadruple by 2050. These combined trends mean that more people will be exposed and vulnerable to climate change impacts in cities in the future.