A survey of correlated waveform design for multifunction software radar
To change the transmit beam pattern, single antenna radar requires a change of antenna while multiple antenna array radar, such as phased array, require amplitude/phase tapers, which are hardware components. Therefore, there is a genuine demand that the parameters of future radar systems be controlled through a software without changing any hardware or using amplitude/phase tapers. It is well known that the parameters of an antenna array radar can be controlled by transmitting suitable correlated waveforms. This approach provides more degree of freedom and if constant envelope (CE) or low peak to average power ratio (PAPR) correlated waveforms are used, it allows us to control the parameters of the radar without changing any hardware. Therefore, this approach can be considered as a step towards a software radar. The aim of this article is to provide a survey of recent techniques used to design CE and low PAPR correlated waveforms and discuss the benefits and drawbacks of each.
IEEE Aerospace and Electronic Systems Magazine