Track while scan monopulse-a technique for improving angular accuracy and resolution

Abstract

Track while scan radar accuracy has been studied for targets of Swerling 1 and 2 types with angular widths. The investigations have led to an improved insight into effects of field intensity variation over the target during beam scanning. This experience, in combination with knowledge of monopulse techniques, has suggested methods to improve track while scan radar performance with respect to both accuracy and resolution. Methods have been designed and evaluated theoretically and by practical measurements of real targets. The results indicate significant possible improvements in accuracy with targets exhibiting rapid fading and glint, as well as for jammed scenarios. These results also show excellent performance against closely spaced targets in both detection of multiple target simulations and accurate estimation of the angular positions for target separations as close as 0.5-0.7 beamwidths.<>