Parasitic Harmonic Cancellation for Reliable Tag Detection with Pulsed Harmonic Radar

AbstractEffective management of Chinese citrus fly, Bactrocera minax (Enderlein) (Diptera: Tephritidae), is hindered by a lack of knowledge about its movements. We determined the feasibility of using harmonic radar technology to measure natural dispersal of B. minax. Tests demonstrated that 3.8 mg tags representing 8% of average insect weight had no visible impact on the ability of flies to takeoff and maintain flight. More than 86% of flies retained their tags for at least 5 days, and there was no significant mortality. Neither adhesive tested for tag mounting affected the survival of flies. Presence of the vertical dorsal tag did not prevent or hamper vertical movement. Together, results validate the use of tags weighing up to 3.8 mg for radar or telemetric study of dispersal ecology of B. minax.

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Development of Harmonic Radar Transponders to Track Black Vine Weevil Behavior in Nurseries

10.13031/2013.16135 ◽

2004 ◽

Author(s):

Ross D. Brazee ◽

Heping Zhu ◽

Ethan S. Miller ◽

Michael E. Reding ◽

Mikael G. Klein ◽

...

Keyword(s):

Harmonic Radar ◽

Black Vine Weevil

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Harmonic Cancellation

10.31234/osf.io/b8e5w ◽

2021 ◽

Author(s):

Alain de Cheveigné

Keyword(s):

Auditory System ◽

Time Domain ◽

Experimental Results ◽

Target Sound ◽

Neural Representations ◽

Behavioral Studies ◽

System P ◽

Harmonic Cancellation ◽

The Time Domain

This paper reviews the hypothesis of {\em harmonic cancellation}\ according to which an interfering sound is suppressed or canceled on the basis of its harmonicity (or periodicity in the time domain). It defines the concept, discusses theoretical arguments in its favor, and reviews experimental results that support it, or not. If correct, the hypothesis likely draws on time domain processing of temporally-accurate neural representations within the brainstem, as required also by the classic Equalization-Cancellation (EC) model of binaural unmasking. It predicts that a target sound corrupted by interference will be easier to hear if the interference is harmonic than inharmonic, all else being equal. This prediction is borne out in a number of behavioral studies, but not all. The paper reviews those results, with the aim to understand the inconsistencies and come up with a reliable conclusion for, or against, the hypothesis of harmonic cancellation within the auditory system.

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