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Bistatic Radar Concept Demonstrator (BiRCD) System Development and Verification

In this report the development and verification of the Bistatic Radar Concept Demonstrator (BiRCD) system within the Surveillance and Reconnaissance Systems Branch (SRS) is described.

Cross-validation is Insufficient for Model Validation

In this report, we review the foundations of cross-validation and draw attention to common, but underappreciated, assumptions.

A Description of a New Model of Sporadic E for JORN

This paper describes a new fully automatic data driven real-time model of the morphology of Es, and describes the associated expected propagation characteristic that should reduce the need for manual intervention. It has been adapted to work with JORN ionospheric sounder data in real time and tested with years of data.

Bayesian Modelling of Network Traffic Metadata using Dirichlet Multinomial Mixtures

In this report we seek to evaluate the utility of dirichlet multinomial mixture (DMM) modelling of network metadata in roles such as source characterisation, detection of cyber security events, or volume filtering in support of same.

CTH Implementation of a Two-Phase Material Model With Damage

In this report a material model taking strength and damage accumulation into acccount is implemented in the CTH hydrocode.

Conducting Information Superiority Research in an Unclassified Surrogate Defence Environment

Defence experimentation brings significant value, but also significant overheads. Therefore to achieve rapid development it is important to strike a balance between working on real systems and surrogate systems (when there is a straightforward translation to Defence systems and/or scenario). The emergency services domain is one such non-Defence surrogate system offering significant potential to mitigate many of these overheads.

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