Search International and National Patent Collections

1. (WO2007088021) METHOD FOR SENSING A THREAT

Pub. No.:    WO/2007/088021    International Application No.:    PCT/EP2007/000777
Publication Date: Aug 9, 2007 International Filing Date: Jan 30, 2007
IPC: G01S 13/00
Applicants: DIEHL STIFTUNG & CO. KG
WESTPHAL, Robert
Inventors: WESTPHAL, Robert
Title: METHOD FOR SENSING A THREAT
Abstract:
The aim of the invention is to significantly increase the effectiveness of a method for analyzing threats according to the principle of passive radar detection using the transmitters in navigation satellites (14) without having to substantially increase the technological effort, said method being protected against inherent betrayal. Said aim is achieved by the fact that simple slave stations (19) of navigation satellites that are operated across large regions transmit the receive signals (13) thereof to at least one evaluation center (11) as wake-up sensors, so to speak, in order for said receive signals (13) to be evaluated in terms of potential current irregularities compared to the expected receive signals, said evaluation center (11) also making a comparison with other irregularities that have just been detected. Stationary or mobile radar systems (22) that comprise higher quality antenna arrays and are readily available, can then be utilized in a specific area in accordance with the result of the evaluation in order to obtain more accurate data on a suspicious object (17) and the threat the same poses to a potential target region or a mobile or stationary object (18) at risk and subsequently be able to make decisions about currently required protective or defensive measures.