Detection and estimation of radio frequency variations

摘要

A system including a counting module, a difference module, and a radar module. The counting module counts polarity reversals of samples of a signal. The samples are generated during a first period, a second period, and a third period. The counting module generates a first count, a second count, and a third count of the polarity reversals counted during the respective periods. The difference module determines a first difference between the first count and the second count, a second difference between the second count and the third count, and a third difference between the first difference and the second difference. The radar module determines variation in frequency of the signal based on the first count and the second count, and determines a type of radar present in the signal based on one or more of the third difference and the variation in the frequency of the signal.

主权项

1. A system comprising:
a counting module configured to
count polarity reversals of samples of a signal, wherein the samples are generated during (i) a first period, (ii) a second period, and (iii) a third period, andgenerate (i) a first count, (ii) a second count, and (iii) a third count of the polarity reversals counted during the respective periods; a difference module configured to determine
a first difference between (i) the first count and (ii) the second count,a second difference between (i) the second count and (ii) the third count, anda third difference between (i) the first difference and (ii) the second difference; and a radar module configured to
determine variation in frequency of the signal based on (i) the first count and (ii) the second count, anddetermine a type of radar present in the signal based on one or more of (i) the third difference and (ii) the variation in the frequency of the signal.