Apparatus and method for GPS-based digital compensation of radio frequencies

An apparatus for digitally compensating received radio frequency signals, comprising:

• an oscillator;
• a downconverter for receiving the received radio frequency signals the downconverter being driven by the oscillator and having a mixer;
• a frequency monitor adapted to measure the frequency of the oscillator;
• an analog-to-digital converter driven by the oscillator;
• a digital receiver driven by the oscillator, the digital receiver having a numerically controlled oscillator;
• a digital demodulator;
• and
• a computer adapted to receive the frequency measurement of the oscillator from the frequency monitor, to calculate an error associated with the oscillator, and to calculate a numerically controlled oscillator setting based on the calculation of the error associated with the oscillator;
• wherein the numerically controlled oscillator is adapted to receive the numerically controlled oscillator setting from the computer to cause the digital receiver to transmit a signal of a desired frequency to the digital demodulator.

An apparatus for digitally compensating transmitted radio frequencies, comprising:

• an oscillator;
• a digital modulator having a numerically controlled oscillator and a mixer, wherein the digital modulator and the numerically controlled oscillator are driven by the oscillator;
• a frequency monitor that is adapted to measure the frequency of the oscillator;
• a digital to analog converter driven by the oscillator;
• an upconverter driven by the oscillator;
• a computer adapted to receive the frequency measurement of the oscillator from the frequency monitor, to calculate an error associated with the oscillator, and to calculate a numerically controlled oscillator setting based on the calculation of the error associated with the oscillator;
• wherein the numerically controlled oscillator is adapted to receive the numerically controlled oscillator setting from the computer to cause the upconverter to transmit a radio frequency signal of a desired frequency to an antenna.