A Proposal of Automotive Anticollision Radars Based on Spread Spectrum Techniques

The use of automotive collision warning radars for improving the road safety is a well recognized opportunity, and a lot of proposals have been already evaluated, in theory and practice. In this paper we present an approach based on the classic direct sequence spread spectrum method, where the pseudo noise sequences consist of gold codes or chaotic signals. By exploiting the degrees of freedom they offer, in conjunction with their good correlation properties, chaotic signals are potentially able to improve the system efficiency compared with gold codes, by increasing the radar detection capability.