An automotive radar network based on 77GHz FMCW sensors

Abstract

Automotive radar sensors will be used in many future applications to increase comfort and safety. Adaptive cruise control (ACC), parking aid, collision warning or avoidance and pre crash are some automotive applications, which are based on high performance radar sensors.This paper describes results gained by an European Commission funded research project and a new radar network based on four individual monostatic 77GHz FMCW radar sensors. Each sensor measures target range and velocity simultaneously and extremely accurate even in multiple target situations with a maximum range of 40m. The azimuth angle is estimated by multilateration techniques in a radar network architecture. The system design and the signal processing of this network are described in detail in this paper. Due to the high range resolution performance of each radar sensor ordinary targets cannot be considered any longer as point but as extended targets. System capability, performance and reliability can be improved essentially if the single sensor FMCW signal processing, the target position processing in the radar network and the tracking scheme are jointly optimized.

Terrain Mapping at the cm level using a real-aperture MMW monopulse radar

“…It would therefore seem sensible to move down the path of a distributed sensor package whereby multiple non-scanning (lowcost) elements could be networked to provide target detection [4].…”

An inline microstrip-to-waveguide transition operating in the full W-Band based on a Chebyshev multisection transformer

“…A short while ago, the availability of commercial monolithic microwave integrated circuits (MMIC) and the existence of low loss W-Band dielectric substrates motivated the development of receivers in planar technology [1], [2] to satisfy the increasing demand to use W-Band for applications in different fields as imaging [3], communications [4], radar [5] or automotive radar [6]. Therefore, a microstrip-to-waveguide transition become essential in order not only to characterize this type of circuits with waveguide measurement equipment but also, to be able to integrate these circuits with waveguide components, e.g.…”

Two-Step Moving Target Detection Algorithm for Automotive 77 GHz FMCW Radar

“…Radar systems have become of great interest for automotive applications such as ACC (Adaptive Cruise Control), CWS (Collision Warning System), and CAS(Collision Avoidance System) [1]. Frequency allocation, almost all over the world, tends to favor the use of the 77GHz millimeter-wave band, and FMCW has been used as an effective method for automotive radar [2] .…”