The Dual Band Radar (DBR) is the first radar system in the U.S. Navy fleet capable of simultaneously operating over two frequency ranges (S-band and X-band), coordinated by a single resource manager.
It combines the functionality of the X-band AN/SPY-3 Multifunction Radar and the S-band Volume Surveillance Radar (VSR) to provide an unprecedented level of performance and capability to detect and track hostile targets.
AN/SPY-3, operating at X-band with high-accuracy, narrow beam width and wide frequency bandwidth, provides superior coverage and effective discrimination of low-altitude targets.
It also provides target illumination and uplink/downlink capabilities for SM-2 and Evolved Sea Sparrow missiles. Using S-band, VSR delivers effective, all-weather search capabilities via its high-power aperture, and narrow beam width, enabling it to accurately resolve and track targets.
FREQUENCY DIVERSITY AND RESOURCE SHARING
Many search and track functions, such as cued acquisition and precision track (providing high update rate, fire control quality data) can be allocated to either or both frequencies, automatically or through command and control direction.
Environmental phenomena diversely affect the SPY-3 and VSR radars, and the DBR's ability to utilize a multitude of frequencies in the two different operating bands dramatically mitigates these effects. The separate band radar arrays provide extensive search, track and multiple missile illumination capacity, which is essential in support of multi-target raid engagements.