Research Progress and Prospect for the Noval Waveform Diverse Array Radar

Abstract

It is difficult for the traditional radar to suppress deceptive mainlobe interference and separate the range ambiguous clutter. The proposal of a waveform diverse array changes the way of obtaining information through utilizing degrees-of-freedom in the transmit dimension. Through flexible system design and signal processing methods, this array enhances the ability of information extraction and improves the anti-jamming and detection performance, compared with the traditional phased array and Multiple-Input Multiple-Output (MIMO) radar. This paper summarizes the research progress of waveform diverse array radars in China and overseas and provides the basic concepts of the array diversity system regarding frequency, time, and phase modulation. Furthermore, the research trend of waveform diverse array radars has been discussed. Based on the existing basic theory and key technology research, the advantages of a waveform diverse array in providing new information about targets and increasing the additional controllable degrees-of-freedom of the system are verified, thereby improving the multidimensional detection capability of the new radar system.

Keywords

• waveform diverse array (wda)
• degrees-of-freedom in the transmit dimension
• frequency diverse array (fda)
• time diverse array (tda)
• element pulse coding array
• suppression of mainlobe deception interference
• range ambiguous clutter
• high resolution and wide swath imaging