Eads Deutschland Gmbh

Daimler Chrysler Ag

Airbus Defence and Space Gmbh

Bird Aerosystems Limited

Georg Weiss

Robert Schneider

Wilhelm Gruener

David Dragucki

Ariye Yehuda Caplan

Semion Zelikman

Zahi Ben Ari

Erwin Franz Keller

Erhard Seibt

Jörg Kliewer

Lutz Jacob

Wilhelm Grüner

Colin Henry Hamilton

Methods for detecting the flight path of projectiles involve a sequence of N target detections that include detecting the measured velocities and azimuthal angle bearings of the projectile along the flight path of the projectile by Doppler radar at the times tn, wherein n=1 . . . N, and determining the flight path and the direction of motion of the projectile are from these measurements. The measurements are adapted in a first nonlinear parameter fit to an analytical relationship of the time curve of the radial velocity of the projectile while the projectile passes through the detection range of the radar and so that the absolute projectile velocity, minimum distance of the project flight path from the radar, time at which the projectile passes the point having the minimum distance, flight path direction in azimuth, and flight path direction in elevation can be estimated.

Methods for detecting the flight path of projectiles

A method for the linearization of frequency modulated continuous wave (FMCW) radar devices having non-linear, ramp-shaped, modulated transmitter frequency progression x(t). With this invention, a correction phase term for compensation of the phase error in the reception signal q(t) is calculated on the receiver side in this device.

Method for the linearization of FMCW radar devices

The aim of the invention is to generate a timely triggering signal for an effective unfolding of an airbag and, at the same time, to take the relative velocity of the collision opponent into account as a triggering criterion. To this end, the invention provides that two interspaced sensors, which emit millimeter waves, are integrated in each vehicle body door. The measuring signals of said sensors are generated by means of a multi-frequency modulation method. The invention also provides that during a signal processing operation using radar technology, the obtained measuring signals are turned into velocity values (Vn) and distance values (R) according to individual echo centers of the collision object. In addition, the transversal velocity (V ) with regard to the door surface is detected from said values in a series-connected situation analysis module. A classification of the collision object results from the measured values and a criterion is obtained from a subtraction of both sensor measurement outcomes. The invention can be used for triggering a side airbag in a motor vehicle.

Airbag sensor system

Growing community of inventors

Kipfenberg, Germany

Georg Weiss