Improving Probability of Radar Detection Using Equalization Techniques in the Presence of Multipath

A wide range of technologies are used by stealth aircraft to make it harder for traditional radars to identify or track them efficiently. Traditional surveillance methods have consistently shown themselves to be insufficient against the stealth threat. These aircraft increase multipath propagation due to their shape and also materials used, which is a significant phenomenon that is affecting radar detection probability. This work has the main goal of improving probability of radar detection in the presence of multipath using the MMSE equalization technique since the latter has been successfully used in wireless communications to effectively combat negative effects of multipath. The purposed novel idea consists of the receiver capturing the transmitted signal, which has been distorted by multipath then pass it through a linear MMSE equalization filter whose coefficients are calculated using the channel estimation and its aim is to minimize the mean error in the signal thereby improving signal quality. A number of simulations are created using Matlab to assess how well the chosen equalization strategy performs. The results demonstrated that the probability of detection of a radar is increased greatly with the use of an MMSE equalizer when comparing it with traditional enhancing methods. Further work using assumptions to fit practical approach implementation is left open by this study.