Cognitive frequency offset calculation for frequency diverse array radar

Development of frequency diverse array radar technology: a review

“…Likewise, an optimal frequency offset selection for MIMO‐FDA radar was presented in [97], where the optimal frequency offset was selected by maximising output SINR in each coherent interval. Similarly, an adaptive computation of frequency offset at each scan based on the receiver feedback has been proposed in [98] for improved radar performance. Likewise, in [99], an FDA with a time‐dependent frequency offset was proposed to get improved beam pattern for a given range and direction.…”

“…Stepping forward towards the FDA radar technology, an FDA radar for selecting the frequency offset, cognitively, was presented in [96]. Moreover, a frequency offset calculation method based on the receiver feedback was proposed in [98] to improve the transmit energy focusing performance in the target position. Moreover, cognitive null steering using a cognitive FDA was proposed in [100], to improve the interference suppression performance.…”

Adaptive transmit beamspace design for cognitive FDA radar tracking

“…Since an FDA radar design generates a range‐angle dependent three‐dimensional (3D) beampattern to continuously scan the surveillance region, it is more likely to be detected by interceptors as compared to a PAR [9]. Fortunately, the frequency offset along the array allows the FDA radar to control its transmit beampattern distribution [10]. Manipulation of the frequency offsets enhances the transmit beampattern focusing towards a range‐angle position [11–14], which adopts non‐uniformly increasing frequency offsets to generate a single‐maximum in the beampattern.…”

Optimal frequency increment selection in frequency diverse multiple‐input–multiple‐output radar

“…In recent years, the frequency diverse array (FDA) radar has drawn much attention [4–11]. FDA differs from the traditional phased array by using a small frequency increment across the array elements.…”

“…An adaptive frequency selection method to control the transmit beam direction adaptively is studied in [10]. A cognitive frequency offset calculation method that supports to beam steer the target position adaptively is introduced in [11].…”