Details of Award

NERC Reference : NE/K008307/1

Optical instrumentation for atmospheric analysis in challenging environments

Lead Supervisor:: Dr J Hodgkinson, Cranfield University, Sch of Aerospace, Transport & Manufact
Grant held at:: Cranfield University, Sch of Aerospace, Transport & Manufact

Abstract:: This proposal aims to develop a robust new instrument for the measurement of atmospheric gases from lightweight airborne platforms where temperature variation, vibration, size and weight criteria present significant design restrictions. Tunable diode laser spectroscopy (TDLS) offers excellent signal to noise ratios in atmospheric analysis, however conventional TDLS suffers from intolerance to misalignment while in the field. Airborne use thus requires substantial additional engineering and monitoring to maintain acceptable performance which make their use on ultralight platforms such as unmanned aerial vehicles (UAVs) impractical. This proposal will develop an alternative TDLS instrument based on the use of integrating spheres, which are highly tolerant to misalignment caused by vibration and temperature fluctuations. The proof-of-concept probe will be configured for measurement of atmospheric methane which will allow both laboratory and aircraft-based benchmarking against existing instruments. The technology is widely applicable to measurement of other gas species. Ultimately, the possibility of UAV installation will be explored as its robustness and ease of deployment could enable this and other exciting applications in environmental science.

Authorised funds only

This training grant award has a total value of £71,671

Total - Fees	Total - Student Stipend	Total - RTSG
£13,978	£49,193	£8,501

If you need further help, please read the user guide.