Peter Willett

Adaptive filtering of imprecisely time-stamped measurements with application to AIS networks

2015 · International Conference on Information Fusion

Driven by real-world issues in maritime surveillance, we consider the problem of estimating the target state from a sequence of observations that can be imprecisely time-stamped. That is, the time between two consecutive observations can …

Computer science in Eastern Europe 1989-2014: a bibliometric study

2015 · Aslib Journal of Information Management

Purpose – The purpose of this paper is to study the development of research in computer science in 15 Eastern European countries following the breaching of the Berlin Wall in 1989. Design/methodology/approach – The authors …

State estimators for tracking sharply-maneuvering ground targets

2017 · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

This paper presents an algorithm, based on the Interacting Multiple Model Estimator, that can be used to track the state of kinematic point targets, moving in two dimensions, that are capable of making sharp heading …

Bias CRLB in Sine Space for a Three-Dimensional Sensor

2019 · IEEE Transactions on Aerospace and Electronic Systems

As bias estimation methods are developed, it becomes necessary to obtain the bound on bias estimation for more complex bias and sensor models. Three-dimensional (3-D) sensors, such as radars commonly used in applications, contain both …

Bayesian Filtering for Dynamic Anomaly Detection and Tracking

2021 · IEEE Transactions on Aerospace and Electronic Systems

This article presents a Bayesian approach for sequential detection of anomalies in the motion of a target and joint tracking. The anomaly is modeled as a binary (on/off) switching unknown control input that goes into …