Blar i NTNU Open på forfatter "Hem, Audun Gullikstad"
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Comparing Multiple Extended Object Tracking with Point Based Multi Object Tracking for LiDAR in a Maritime Context
Baerveldt, Martin Lukas; Hem, Audun Gullikstad; Brekke, Edmund Førland (Journal article; Peer reviewed, 2023)In this paper, we compare a recently developed multiple extended object tracking method with a point-based tracker for maritime applications by evaluating the methods on both real and simulated LiDAR data. Being able to ... -
Compensating radar rotation in target tracking
Hem, Audun Gullikstad; Brekke, Edmund Førland (Chapter, 2022)For applications where the vessel carrying the radar is highly maneuverable, or the radar rotation frequency is low, it may be unreasonable to approximate the radar measurements as arriving simultaneously. This paper ... -
A long simulation scenario for evaluation of multi-target tracking methods
Brekke, Edmund Førland; Hem, Audun Gullikstad (Chapter, 2023)Algorithms for multi-target tracking are typically evaluated by means of simulations. Typically, the simulated scenarios are fairly short and of very simple geometry. In contrast, this paper describes a scenario which was ... -
Maritime multi-target tracking with radar and asynchronous transponder measurements
Hem, Audun Gullikstad (Master thesis, 2021)Denne avhandlingen presenterer en ny metode for å bruke en type målinger med unike IDer, sendt ut av omkringliggense fartøy, i en radar-basert målfølgingsalgoritme. Det tiltenkte bruksområdet er i maritim målfølging, og ... -
Maritime Target Tracking with Exteroceptive Sensors and Target-Provided Information
Hem, Audun Gullikstad (Doctoral theses at NTNU;2024:218, Doctoral thesis, 2024)Autonomous and unmanned operations at sea are becoming increasingly common. However, as the operational goals increase in ambition, the existing methods show their weaknesses. The maritime domain can be complex and ... -
Multitarget Tracking with Multiple Models and Visibility: Derivation and Verification on Maritime Radar Data
Brekke, Edmund Førland; Hem, Audun Gullikstad; Tokle, Lars-Christian Ness (Peer reviewed; Journal article, 2021)In this article, we demonstrate how a variation of the joint integrated probabilistic data association with interacting multiple models and a visibility state can be derived as a special case of the Poisson multi-Bernoulli ... -
PMBM Filtering With Fusion of Target-Provided and Exteroceptive Measurements: Applications to Maritime Point and Extended Object Tracking
Hem, Audun Gullikstad; Baerveldt, Martin Lukas; Brekke, Edmund Førland (Journal article; Peer reviewed, 2024)In recent years, the Poisson multi-Bernoulli mixture (PMBM) filter has been established among the state-of-the art methods in target tracking. We present a method for including target-provided measurements in said filter, ... -
Track Level Fusion of Radar and AIS for Autonomous Surface Vessels
Sagild, Jonas Åsnes (Master thesis, 2021)Denne oppgaven omhandler "track level"-metoden (spornivåtilnærmingen) for sammenslåing av "Automatic Identification System (AIS)"-meldinger og radarmålinger. En fullstendig tilnærming på spornivå til AIS-radarfusjon har ... -
Validation of Automatic Identification System Information With Exteroceptive Sensor Fusion for Unmanned Marine Operations
Hem, Audun Gullikstad; Brekke, Edmund Førland (Journal article; Peer reviewed, 2024)The automatic identification system (AIS) can improve situational awareness at sea, but its protocol is simple and does not guarantee message integrity, authentication, and proper use. For example, the lack of safety ... -
Variations of Joint Integrated Data Association With Radar and Target-Provided Measurements
Hem, Audun Gullikstad; Brekke, Edmund Førland (Peer reviewed; Journal article, 2023)Target tracking algorithms are usually based on exteroceptive measurements obtained from sensors placed in the center of some surveillance area. However, information transmitted from surrounding targets will often also be ... -
WakeIPDA: Target Tracking With Existence Modeling in the Presence of Wakes
Hem, Audun Gullikstad; Alvheim, Hanne-Grete; Brekke, Edmund Førland (Chapter, 2023)We present a novel target tracking algorithm, which is designed to track a target in the presence of wake clutter. What distinguishes the method from previous wake-compensating trackers is that it also models the existence ...