Improved RCS model for censored Swerling III and IV target models

In radar tracking applications, it is often necessary to estimate the Radar Cross Section (RCS) of a target. This estimate is especially important for monopulse radar tracking systems where waveform selection and revisit times are dependent on this estimate. The conventional approach to estimating the RCS for Swerling III and IV (Chi-squared distributed) targets ignores censoring issues that arise from voltage clipping. A maximum likelihood estimator of the target RCS for Swerling III and IV targets for censored distributions is derived and compared to the conventional estimator.