On the theory of noise Doppler radar

Presently, there is an increasing interest in noise modulated radar in a wide spectrum of applications, such as surveillance, tracking, altimetry, and sub-surface profiling. Wide-band signals with high range resolution, reduced ambiguities and high ECCM performance can be achieved. In this paper, the theory of noise modulated radar is treated. Point target response, side-lobe level, and time compression due to motion effects are analysed. The processing involved correlates the received signal and the delayed reference signal. An alternative method correlates only their signs, making it possible to reduce the requirements on the analog-to-digital converters to one bit. Both approaches are studied and degrading effects from additive noise are analysed