Millimeter-wave dual mode radar for headway control in IVHS

Abstract

In intelligent vehicle and highway systems (IVHS), lateral and headway vehicle control is used to maintain stable driving. Headway control keeps the controlled vehicle an appropriate distance from vehicles directly ahead. Each vehicle needs to have an obstacle detection system installed to monitor distances to the preceding vehicle and its relative speed.In the future, headway control systems for consumer use must be cheap and capable of operating in all environmental conditions. To enable such equipment to be built, a dual mode millimeterwave radar has been proposed. It would be able to operate in both radar mode, in which it would measure the distance to the leading vehicle, and in communication mode, in which it would exchange data with a vehicle ahead of it. By operating in two modes alternately, the dual mode radar can provide the headway control system with all the data needed to control the distances to the leading vehicles, their speeds, acceleration conditions, and the leading vehicle's steering angle and brake signal. The data can then be used for stable control of the vehicles. This paper describes the concept of the dual mode radar systeim and the results of the experiments undertaken.

An Overview of the Automation of Load-Haul-Dump Vehicles in an Underground Mining Environment

“…Radar based collision avoidance systems have been developed by a number of research groups as part of various Intelligent Vehicle Highway Systems (IVHS) (Konno and Koshikawa, 1997). Most of these system are designed to work in an environment where the vehicle will not pitch and roll significantly, however this is not the case for mining vehicles and hence it is unlikely that any of the current automotive systems would be suitable for the mining environment.…”

Joint MIMO Radar and Communication System Using a PSK-LFM Waveform With TDM and CDM Approaches

“…Hence, the host vehicle can simultaneously measure the distance between the host and target vehicle and receive the message by demodulating the received signal from the target vehicle. In [7] - [9], a single transceiver platform which operates in both the radar and communication modes allocating different time slots for each modality was proposed in order to prevent interference between the systems. However, in such an arrangement the radar cannot detect targets during the communication mode, so radar performance may be affected negatively.…”

Sparse Representation Based Range-Doppler Processing for Integrated OFDM Radar-Communication Networks

“…The concept of the integrated radar-communication system (RadCom) was first proposed in [9]. It was then further characterized by time domain [10][11][12] and code-domain integration in [13][14][15][16][17]. Although these techniques are common in wireless communications, they are not suitable for multiuser radar applications.…”