Methods for testing controlled radiation pattern antenna processing units and systems therefor

A non-transitory machine readable medium having stored thereon instructions comprising executable code that when executed by one or more processors, cause the processors to:

• receive from a plurality of radiofrequency receivers, a plurality of baseband signals, each of the plurality of baseband signals generated from a radiofrequency signal from a GNSS antenna and a pilot reference signal, wherein the pilot reference signal is the same for each of the baseband signals and each of the plurality of baseband signals is amplified and below a thermal noise floor;
• calculate a phase offset, a time offset, and a power offset for each of the plurality of baseband signals based on the pilot reference signal;
• and
• adjust each of the plurality of baseband signals based on the calculated phase offset, time offset, and power offset for each of the plurality of baseband signals.

A GNSS record and playback apparatus comprising:

• a memory comprising programmed instructions stored thereon and one or more processors configured to be capable of executing the stored programmed instructions to:
• receive from a plurality of radiofrequency receivers, a plurality of baseband signals, each of the plurality of baseband signals generated from a radiofrequency signal from a GNSS antenna and a pilot reference signal, wherein the pilot reference signal is the same for each of the baseband signals and each of the plurality of baseband signals is amplified and below a thermal noise floor;
• calculate a phase offset, a time offset, and a power offset for each of the plurality of baseband signals based on the pilot reference signal;
• and
• adjust each of the plurality of baseband signals based on the calculated phase offset, time offset, and power offset for each of the plurality of baseband signals.