发明授权
- 专利标题: Radar method and apparatus suitable for use in multipath environments
- 专利标题(中): 适用于多路径环境的雷达方法和装置
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申请号: US12678895申请日: 2008-10-13
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公开(公告)号: US08217827B2公开(公告)日: 2012-07-10
- 发明人: Stephen David Hayward , Richard Oliver Lane
- 申请人: Stephen David Hayward , Richard Oliver Lane
- 申请人地址: GB London
- 专利权人: Qinetiq Limited
- 当前专利权人: Qinetiq Limited
- 当前专利权人地址: GB London
- 代理机构: Oliff & Berridge, PLC
- 优先权: GB0719995.3 20071012
- 国际申请: PCT/GB2008/003476 WO 20081013
- 国际公布: WO2009/047546 WO 20090416
- 主分类号: G01S13/00
- IPC分类号: G01S13/00
摘要:
A method and system for locating objects in a region having a high degree of multipath susceptibility comprises a plurality of transducers, each being a transmit or receive antenna, and being arranged about the region in known locations, to form a bistatic or multistatic radar, with some embodiments being MIMO systems. Signals transmitted by the transmit antenna(s) are received at each receive antenna and processed to form a set of channel impulse responses, or power delay profiles, representative of the region at a given time. A second set is formed at a different time, and the difference between the two sets is calculated, the difference containing information on movement within the region. The difference may be processed to localize the moving object(s) by graphical means, e.g. by generating an x-y image representative of the region, and accumulating at each pixel appropriate values of the profile difference selected according to the propagation delay between a transmit-receive antenna pair via a region point represented by the pixel.
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