Keywords
Citation
Rigelsford, J. (2003), "Radar Pulse Generation", Sensor Review, Vol. 23 No. 2. https://doi.org/10.1108/sr.2003.08723bad.010
Publisher
:Emerald Group Publishing Limited
Copyright © 2003, MCB UP Limited
Radar Pulse Generation
Radar Pulse Generation
Applicant: Dirk Steinbuch, GermanyPatent number: US2002163465Publication date: 7 November 2002Title: Method for generating and analyzing radar pulses as well as a radar sensor
Keywords: Radar, Pulse, Sensors
This patent presents a method for generating and analyzing short-range radar pulses for application in motor vehicles. Radar sensors are used in the automotive industry to measure the distance and relative speed of objects outside the vehicle. Such objects may include other moving or stationary vehicles, pedestrians, cyclists, or street furniture.
The system comprises a single antenna, which is used to transmit and receive radar pulses simultaneously, connected to a continuous RF signal source via at least one mixer. To generate the radar pulse, the mixer is briefly brought into a state of low throughput loss. The signal of the radio frequency source is then able to pass the mixer and reaches the antenna. Immediately after the radar pulse is generated and transmitted, the mixer is switched over to receive mode and awaits the return of the transmitted radar pulse that is reflected by an object. The delay time is a measure of the distance of the object. The use of two mixers allows in-phase (I) and quadrature (Q) components of the pulse to be obtained.