Autonomous spectral harvesting system

摘要

A spectral harvesting system has one or more sensor modules and a processor. The sensor modules autonomously scan RF signals over a range of frequencies in a region of interest. The processor receives observed RF signals from the sensor modules, and performs signal analysis on the observed RF signals received. The signal analysis includes converting the observed RF signals into a frequency signal in a frequency domain, temporally averaging the frequency signal to provide a temporally averaged frequency signal, performing a coarse estimate of the spectral noise floor of the observed RF signals based on the temporally averaged frequency signal using an opening technique that performs an erosion process followed by a dilation process on the temporally averaged frequency signal, and determining an a-posteriori signal presence probability of a signal being present from an RF emitter in the region of interest based on the coarse estimate.

主权项

1. An autonomous radio frequency (RF) spectral harvesting system comprising:
one or more sensor modules configured to autonomously scan RF signals over a range of frequencies in a region of interest; and a processor configured to:
receive observed RF signals from the one or more sensor modules; and perform signal analysis on the observed RF signals received, the signal analysis comprising: converting the observed RF signals into a frequency signal in a frequency domain; temporally averaging the frequency signal to provide a temporally averaged frequency signal; performing a coarse estimate of a spectral noise floor of the observed RF signals based on the temporally averaged frequency signal using an opening technique that performs an erosion process followed by a dilation process on the temporally averaged frequency signal; and determining an a-posteriori signal presence probability of a signal being present from an RF emitter in the region of interest based on the coarse estimate.