Experiments with cognitive radar

Smith, Gerald Birney; Cammenga, Zach; Mitchell, Adam E.; Bell, Kristine L.; Johnson, Joel T.; Rangaswamy, Muralidhar; Baker, C.J.

doi:10.1109/maes.2016.150215

Cited by 66 publications

(22 citation statements)

References 16 publications

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“…increasing pulse rate vs. intensity) can serve as an inspiration for developing these systems. At present, only research-based radar systems are beginning to emerge that have the ability to independently adjust parameters such as pulse repetition rates, pulse lengths and intensity (Smith et al 2016). Working with humans in this context has the advantage that talking to them facilitates instruction and measurements.…”

Section: Discussionmentioning

confidence: 99%

Human Click-Based Echolocation of Distance: Superfine Acuity and Dynamic Clicking Behaviour

Thaler

Vos

Kish³

et al. 2019

JARO

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Some people who are blind have trained themselves in echolocation using mouth clicks. Here, we provide the first report of psychophysical and clicking data during echolocation of distance from a group of 8 blind people with experience in mouth click-based echolocation (daily use for > 3 years). We found that experienced echolocators can detect changes in distance of 3 cm at a reference distance of 50 cm, and a change of 7 cm at a reference distance of 150 cm, regardless of object size (i.e. 28.5 cm vs. 80 cm diameter disk). Participants made mouth clicks that were more intense and they made more clicks for weaker reflectors (i.e. same object at farther distance, or smaller object at same distance), but number and intensity of clicks were adjusted independently from one another. The acuity we found is better than previous estimates based on samples of sighted participants without experience in echolocation or individual experienced participants (i.e. single blind echolocators tested) and highlights adaptation of the perceptual system in blind human echolocators. Further, the dynamic adaptive clicking behaviour we observed suggests that number and intensity of emissions serve separate functions to increase SNR. The data may serve as an inspiration for low-cost (i.e. non-array based) artificial ‘cognitive’ sonar and radar systems, i.e. signal design, adaptive pulse repetition rate and intensity. It will also be useful for instruction and guidance for new users of echolocation.

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Section: Discussionmentioning

confidence: 99%

Human Click-Based Echolocation of Distance: Superfine Acuity and Dynamic Clicking Behaviour

Thaler

Vos

Kish³

et al. 2019

JARO

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“…The CREW is a waveform agile, mm‐wavelength radar system with four transmit and four receive channels. It was created with the express intent of testing cognitive and fully adaptive radar principles in an experimental setting [45]. For the simulated experiments, the artificial radar returns were calibrated to closely match the measurements received by the CREW.…”

Section: Cost Function Design Examplementioning

confidence: 99%

Cost function design for the fully adaptive radar framework

Mitchell

Smith

Bell

et al. 2018

IET Radar, Sonar & Navigation

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“…It also shows the sensor hardware as a separate block that interacts directly with the environment. This structure is organised differently but has the same functionality as previous implementations of the FAR framework [5, 6, 29], which emulated the cognitive PAC using three components, a sensor, a processor, and a controller. The current dual‐processor construction was chosen because it better aligns with Fuster's neuropsychological cognitive structure [13], the JDL fusion levels [16], and the cognitive radar architectures in [1, 20–22, 24].…”

Section: Far Frameworkmentioning

confidence: 99%