Systems, methods, and devices having databases for electronic spectrum management

A system for automatic signal detection in a radio-frequency (RF) environment, comprising:

• at least one apparatus for detecting signals in the RF environment;
• wherein the at least one apparatus is operable to sweep and learn the RF environment in a learning period based on statistical learning techniques, thereby creating learning data;
• wherein the at least one apparatus is operable to form a knowledge map based on the learning data;
• wherein the at least one apparatus is operable to create a profile of the RF environment based on the knowledge map, wherein the profile comprises a highest power level for each frequency detected during the learning period;
• wherein the at least one apparatus is operable to identify areas of transition in the profile based on gradient detection;
• wherein the at least one apparatus is operable to scrub a real-time spectral sweep against the profile;
• and
• wherein the at least one apparatus is operable to match positive and negative gradients in the profile to detect at least one signal in the RF environment.