Multisource Self-Calibration for Sensor Arrays

Experimental Calibration for Electronic Beamforming with Sensor Arrays

Self-Calibration of Sensor Networks

We consider the problem of locating and orienting a network of unattended sensors that has been deployed in a scene with unknown sensor locations and orientation angles, when no “anchor” nodes are present. Many localization problems assume that some nodes have known locations and propagate location information about other nodes using triangulation procedures. In our formulation, we do not requi...

Integrated Self-Test and Calibration for Field-Programmable Analog Arrays

A New Self-calibration Technique for Adaptive Microphone Arrays

A simple channel calibration for microphone arrays is proposed. A gain is applied to the signal in each channel. The signal power in each channel is normalized by its time-averaged power and scaled by the channel-averaged power. This allows equalization of the gains without any change in the output power of the fixed beamformer. Suppressing the gain difference reduces directivity distortion and...

Dithering Strategies for Efficient Self-Calibration of Imaging Arrays

With high sensitivity imaging arrays, accurate calibration is essential to achieve the limits of detection of space observatories. One can simultaneously extract information about the scene being observed and the calibration properties of the detector and imaging system from redundant dithered images of a scene. There are large differences in the effectiveness of dithering strategies for allowi...