Characterization of Quad-Copter Positioning Systems and the Effect of Pose Uncertainties on Field Probe Measurements
Technical Report,01 Sep 2014,24 Mar 2016
AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH WRIGHT-PATTERSON AFB United States
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This research intends to reduce the impact of uncertainties caused by errors in the incident field by utilizing a unique two-way field probe in the form of a geodesic sphere encompassing a commercial quad-copter aircraft. The probe is used to measure the distortions in the incident fields in the target volume to quantify one of the key sources of RCS measurement uncertainty. This research determined the uncertainty of the probe by creating a calibrated data set of the probes RCS, extracting the calibrated RCS based on the measurement flight path, comparing the measured with the calibrated data, and determining the deviation in the difference. The accuracy of the comparison, and therefore the measurement, depends on the accuracy of the flight path. An uncertainty in the probes pose during flight translates into a field measurement uncertainty. These uncertainties were determined for multiple positioning systems. Each uncertainty was fed into the measurement model and their uncertainties were determined. Field measurement accuracies of 2 deg in phase and 0.05V min magnitude were demonstrated.
- Active and Passive Radar Detection and Equipment
- Pilotless Aircraft