Resilient direction finder and geolocation device

A direction finder device, comprising:

• a platform with an antenna system;
• and
• an electronic circuit disposed on or in the platform that is configured to:
• mechanically steer the antenna system at a first time such that a null of a first antenna pattern points in a first null direction towards an interference source;
• obtain a first location of the platform at the first time;
• mechanically steer the antenna system at a second time such that the null of the first antenna pattern points in a second null direction towards the interference source, wherein the second direction is different than the first direction;
• obtain a second location of the platform at the second time, wherein the second location is different than the first location;
• and
• use the first location, the second location, the first null direction and the second null direction to determine a first estimated location of the interference source.

An aerial vehicle, comprising:

• a fuselage;
• and
• avionic electronics that are disposed in the fuselage and comprise an electronic circuit configured to:
• control a mechanical steering of a null of a first antenna pattern at a first time to point in a first null direction towards an interference source;
• obtain a first location of the aerial vehicle at the first time;
• control a mechanical steering of the null of the first antenna pattern at a second time to point in a second null direction towards the interference source, wherein the second direction is different than the first direction;
• obtain a second location of the aerial vehicle at the second time, wherein the second location is different than the first location;
• and
• use the first location, the second location, the first null direction and the second null direction to determine a first estimated location of the interference source.