The phenomenon of fireballs — bright meteors that explosively enter the Earth’s atmosphere — poses both scientific intrigue and potential hazards. Traditional methods of monitoring fireballs rely heavily on optical observations, which are limited by line-of-sight constraints and weather conditions. This thesis proposes a novel approach utilising Distributed Acoustic Sensing (DAS) technology to detect and analyse fireballs. DAS employs fiber-optic cables to detect minute vibrations in the ground, offering a wide-area, continuous, and weather-independent monitoring capability.
The core of this research involves integrating DAS with existing meteor detection frameworks to create a robust system for fireball observation, be it from natural or human made re-entries. The project will initially analyse existing DAS data to investigate signals from fireballs, and supersonic sources around Perth and develop advanced signal processing techniques.
This project will also support the deployment of fiber-optic cables alongside other non-traditional sensors to build our understanding of re-entry dynamics and detection capabilities of DAS systems.
Aim
The expected outcomes of this study are a deeper understanding of the acoustic properties of fireballs and the establishment of DAS as a viable tool for meteor observation. By leveraging the advantages of DAS, this thesis aims to pave the way for innovative solutions in satellite re-entry monitoring.
Objectives
Key objectives include identifying the unique acoustic signatures of fireballs, calibrating the DAS system for optimal sensitivity, and developing algorithms for real-time detection and alerting. This research will also explore the correlation between the acoustic data and the physical characteristics of fireballs, such as size, speed, and fragmentation patterns.
Significance
This interdisciplinary project will not only enhance the current methodologies for studying meteors but also contributes to a broader sovereign space situational awareness capability. With commercial re-entry operations expanding rapidly (companies like Varda planning monthly missions by 2026), and uncontrolled re-entries on the rise, Australia will need this capability to protect national interests.
Ideal Candidate
This project would suit a student with a background in signal processing, geophysics or data science and keen to getting hands-on experience in the field. Additionally, the applicants should meet the eligibility criteria for entry into a PhD program at Curtin University.
This project is open to International and Domestic applicants.
Internship
Through this project you will also have an internship opportunity. More information will be provided at a later date.
Scholarship
If you are identified as the preferred candidate for this project, you may be considered for an RTP scholarship.
Enquires and How to Apply
For enquires about this opportunity contact Dr Ellie Sansom at Eleanor.Sansom@curtin.edu.au
To formally apply submit an Expression of Interest to Dr Ellie Sansom during the Central Scholarship round (July 1st – July 31st 2026)