Systems, methods, and devices for geolocation with deployable large scale arrays

A system for geolocating a signal emitting device, comprising:

• a monitoring array comprising at least four monitoring units;
• wherein each of the at least four monitoring units is operable to sweep and learn a radio frequency (RF) environment in a learning period based on statistical learning techniques, thereby creating learning data including power level measurements of the RF environment;
• wherein each of the at least four monitoring units is operable to index the power level measurements for each frequency interval in a spectrum section in the learning period;
• wherein each of the at least four monitoring units is operable to form a knowledge map based on the power level measurements of the RF environment;
• wherein each of the at least four monitoring units is operable to scrub a real-time spectral sweep against the knowledge map;
• wherein each of the at least four monitoring units is operable to calculate a first derivative of the power level measurements and a second derivative of the power level measurements;
• wherein each of the at least four monitoring units is operable to select most prominent derivatives of the first derivative and the second derivative;
• wherein each of the at least four monitoring units is operable to perform a squaring function on the most prominent derivatives;
• wherein each of the at least four monitoring units is operable to identify a signal of interest in the RF environment based on matched positive and negative gradients;
• wherein each of the at least four monitoring units is operable to average the real-time spectral sweep, remove areas identified by the matched positive and negative gradients, and connect points between removed areas to determine a baseline;
• wherein each of the at least four monitoring units is operable to subtract the baseline from the real-time spectral sweep to reveal the signal of interest;
• wherein the at least four monitoring units are operable to scan independently for the signal of interest;
• wherein the monitoring array is operable to calculate times of arrival and angles of arrival for the signal of interest;
• wherein each of the at least four monitoring units is operable to measure the signal of interest and transmit a formatted message to other monitoring units within the monitoring array;
• and
• wherein each of the at least four monitoring units is operable to determine a location of the signal emitting device from which the signal of interest is emitted based on calculations and measurements relating to the signal of interest.