Patent ID: 8825436

Claim:
A spatially distributed micro-electro-mechanical system (MEMS) inertial sensor array apparatus, comprising: a plurality of pairs of MEMS inertial sensors, each pair having sensing axes oriented in two different, non-orthogonal directions, wherein the sensors have similar bias behavior, and have similar thermal characteristics, and the sensors measure angular rate of change; and an analog circuit that combines the output of the sensors of the inertial sensor array to increase the signal to noise ratio by reducing the correlated error due to environmental changes an analog to digital converter and sampling block that converts output of the analog circuit to a digital signal; a digital signal processing unit that processes the digital signal received from the analog to digital converter and sampling block wherein the digital signal processing unit performs two dimensional data processing to increase the signal to noise ratio, and wherein the digital signal processing unit comprises a two dimension Fast Fourier Transform module to perform two dimension Fast Fourier Transform, wherein a first dimension is a number of measurement data pairs, and a second dimension is time, wherein the measurement data pairs are derived from the inertial sensors.