Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.657360
Title: Analysis of the radar return signal from rotating aircraft blades
Author: Martin, James
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1992
Availability of Full Text:
Access from EThOS:
Full text unavailable from EThOS. Please try the link below.
Access from Institution:
Abstract:
It is well known that moving objects tend to cause a Doppler frequency shift of the radar return signal. However, rotating objects tent to cause a modulation of the return signal. Almost all aircraft have rotating parts, viz. rotor blades, propeller blades, or jet engine compressor and turbine blades, therefore almost all aircraft can cause this modulation. This thesis presents a detailed mathematical analysis of the radar return signal from rotating aircraft blades. This thesis is concerned with the analysis of the return signal and frequency spectrum of rotor and propeller blades when there is both phase and amplitude modulation of the return signal. A detailed survey of the physical configurations, physical parameters and radar features of rotor and propeller aircraft ranging in size from light to heavy aircraft is also presented. This survey includes those features which relate to the aircraft in general, and those which relate to the rotating aircraft blades in particular. The extraction of aircraft features from the return signal is also discussed. The main emphasis is on the extraction of features which relate to the rotor or propeller blades of the aircraft, but the extraction of other features from the return signal is also considered. Some of the practical considerations which are associated with the analysis of the return signal from rotating aircraft blades are also discussed. Four main subjects are considered: the radar parameters, window functions, relative acceleration and aircraft classification.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.657360  DOI: Not available
Share: