Graeme E. Smith
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View article: Both terminal misfolding and polymerisation contribute to disease-relevant responses in cell models of α <sub>1</sub> -antitrypsin deficiency-associated liver disease
Both terminal misfolding and polymerisation contribute to disease-relevant responses in cell models of α <sub>1</sub> -antitrypsin deficiency-associated liver disease Open
Polymerisation of α 1 -antitrypsin within hepatocytes is considered central to the pathogenesis of α 1 -antitrypsin deficiency-associated liver fibrosis, most commonly in homozygotes for the Z (p.Glu342Lys) allele. Polymerisation proceeds …
View article: Real-Time Detection and Filtering of Radio Frequency Interference Onboard a Spaceborne Microwave Radiometer: The CubeRRT Mission
Real-Time Detection and Filtering of Radio Frequency Interference Onboard a Spaceborne Microwave Radiometer: The CubeRRT Mission Open
The Cubesat Radiometer Radio frequency interference Technology validation mission (CubeRRT) was developed to demonstrate real-time on-board detection and filtering of radio frequency interference (RFI) for wide bandwidth microwave radiomet…
View article: Array‐based target localisation in ATSC DTV passive radar
Array‐based target localisation in ATSC DTV passive radar Open
This work investigates the use of passive radar array‐based localisation, with a focus on experimental demonstration and practical array calibration aspects. Passive radar target localisation often employs multilateration, where a set of h…
View article: Cramér–Rao lower bound for ATSC signal‐based passive radar systems
Cramér–Rao lower bound for ATSC signal‐based passive radar systems Open
In multistatic passive radar systems, the Cramér–Rao lower bound (CRLB) can be used to select the optimal illuminator of opportunity so that it provides the best estimation accuracy for target parameters. In this Letter, the monostatic and…
View article: Hierarchical fully adaptive radar
Hierarchical fully adaptive radar Open
By emulating the cognitive perception–action cycle believed to be at the core of animal cognition, cognitive radars promise to improve radar performance over standard systems. The fully adaptive radar (FAR) framework provides a generalised…
View article: Passive ISAR part II: narrowband imaging
Passive ISAR part II: narrowband imaging Open
In part II of the passive inverse synthetic radar (P‐ISAR) sequence, implications of narrow signal bandwidths on image formation procedures are considered within the previously developed P‐ISAR framework of part I. Specifically, the case o…
View article: Passive ISAR part I: framework and considerations
Passive ISAR part I: framework and considerations Open
In part I of a two‐part passive imaging series, a comprehensive framework for imaging of air targets with passive radar (PR) systems is developed. All operations necessary to convert raw sample data into two‐dimensional imagery are touched…
View article: Cost function design for the fully adaptive radar framework
Cost function design for the fully adaptive radar framework Open
By emulating the neuropsychological processes underpinning animal cognition, the field of cognitive radar seeks to improve performance compared to non‐adaptive systems. The fully adaptive radar (FAR) framework is an application agnostic me…
View article: Human echolocation: 2D shape discrimination using features extracted from acoustic echoes
Human echolocation: 2D shape discrimination using features extracted from acoustic echoes Open
Some blind humans have developed the ability to perceive their silent surrounding by using echolocation based on tongue clicks. Past research has also shown that blind echolocators can use information gained from multiple echoic ‘views’, p…
View article: Mouth-clicks used by blind expert human echolocators – signal description and model based signal synthesis
Mouth-clicks used by blind expert human echolocators – signal description and model based signal synthesis Open
Echolocation is the ability to use sound-echoes to infer spatial information about the environment. Some blind people have developed extraordinary proficiency in echolocation using mouth-clicks. The first step of human biosonar is the tran…
View article: Human echolocation: waveform analysis of tongue clicks
Human echolocation: waveform analysis of tongue clicks Open
Some blind individuals have the ability to detect and classify objects in complex scenes by using echolocation based on ‘tongue clicks’. A waveform analysis of the tongue clicks collected from three blind individuals is presented who use t…
View article: Cognitive Radar Framework for Target Detection and Tracking
Cognitive Radar Framework for Target Detection and Tracking Open
Most radar systems employ a feed-forward processing chain in which they first perform some low-level processing of received sensor data to obtain target detections and then pass the processed data on to some higher-level processor such as …
View article: Practical implementation of stripmap Doppler imaging
Practical implementation of stripmap Doppler imaging Open
Doppler imaging is a technique that can generate fine two‐dimensional (2D) imagery in the absence of large bandwidths. Radar imaging has traditionally consisted of combining wide bandwidth waveforms with aperture synthesis. Wide bandwidth …