Modern high-performance radar systems’ data is often rendered to distinguish between positive and negative frequencies necessitating complex data values, with real and imaginary constituents typically termed In-phase (I) and Quadrature (Q) elements respectively. Processing this data generally assumes well-balanced I/Q data, which may often be problematic due to non-ideal component and circuit behavior. We offer a number of techniques to mitigate the effects of I/Q imbalance.
A. W. Doerry,
"Balancing I/Q data in radar range-Doppler images", Proc. SPIE 9461, Radar Sensor Technology XIX; and Active and Passive Signatures VI, 94611Y (21 May 2015); doi: 10.1117/12.2075745; https://doi.org/10.1117/12.2075745