Simulation versus reality-measurement of target range and angle

The W-160 naval fire control radar described includes advanced measurement algorithms which minimize the RMS range and angle tracking errors by minimizing the effects of bias errors. These W-160 algorithms have been separately shown to be asymptotically unbiased as the number of samples increases. Under the conditions simulated, for the 5 dB SNR case and a tracker improvement factor of five, results indicate that the W-160 split gate algorithm produced an RMS angle error which is four times lower than the Kanter algorithm. Under these same conditions the W-160 split gate algorithm produced an RMS range error which is six times lower than the classical algorithm to which it was compared. The performance of a second set of W-160 algorithms, the central gate algorithms, is also presented. It is shown that, as expected, the central gate algorithms provide better angle measurements at the expense of poorer range measurements