Interference-aided navigation with temporal beam forming in rotating vehicles

An interference-aided signal acquisition and tracking system with temporal beam forming for a rotating vehicle to enhance signal to noise ratio comprising:

• an antenna for receiving interference signals and desired signals;
• an RF processing function connected to the antenna to process the received interference signals and the desired signals into an IF signal;
• a tracking filter connected to the RF processing function for tracking amplitude variations of the interference signals in the IF signal and providing a rotation angle estimate signal of the rotating vehicle;
• and
• a signal modulation function connected to the tracking filter and the RF processing function for varying gain of the IF signal to enhance the signal to noise ratio.

A method of using interference signals to acquire and track desired navigation signal and to vary gain in response to interference signals in a rotating vehicle to enhance signal to noise ratio comprising the steps of:

• receiving the interference signals and the desired navigation signals with an antenna;
• processing the received interference signals and the desired navigation signals into IF signals;
• tracking amplitude variations of the interference signals and providing a rotation angle estimate signal of the rotating vehicle;
• and
• varying the gain of the IF signal to enhance the signal to noise ratio in response to the rotation angle estimate signal.