发明名称 |
Random antenna array interferometer for radio location |
摘要 |
This invention relates to a method and system for the radio location of CDMA and non-CDMA enabled transmitters within a reception zone. The invention exploits the superposition of antenna patterns that create complex and asymmetrical interference structures at very small scales. By randomly distributing a random antenna array of M elements across a two or three-dimensional surface, fine scale interference structures on the scale of ¼ the carrier wavelength are generated. Once the minimum number of antennas are placed, additional antennas will not improve the resolution. Such interference structures when sampled at 1/8 the carrier wavelength or greater yields unique spatial patterns with respect to a given antenna array geometry and transmitter location. The invention incorporates signature recognition (matching) and orthogonal sub-space projection estimators to derive location estimates of a radio transmitter.
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申请公布号 |
US2005007278(A1) |
申请公布日期 |
2005.01.13 |
申请号 |
US20030615964 |
申请日期 |
2003.07.09 |
申请人 |
LOTEK WIRELESS INC. |
发明人 |
ANSON PETER;NIEZGODA GEORGE |
分类号 |
G01S3/48;(IPC1-7):G01S3/02 |
主分类号 |
G01S3/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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