发明名称 |
System and method for detecting and estimating the direction of near-stationary targets in monostatic clutter using phase information |
摘要 |
A system and method for detecting a target. The inventive method includes the steps of receiving a complex return signal of an electromagnetic pulse having a real and an imaginary component; extracting from the imaginary component information representative of the phase component of the return signal; and utilizing the phase component to detect the target. Specifically, the phase components are those found from the complex range-Doppler map. More specific embodiments further include the steps of determining a power spectral density of the phase component of the return signal; performing a cross-correlation of power spectral density of the phase component of the return signal between different antenna-subarray (quadrant channels); and averaging the cross-correlated power spectral density of the low frequency components. In an alternative embodiment, the cross-correlation is performed on the phase component of the range-Doppler map directly. This signal can then be averaged to potentially provide improved detection of targets. The cross-correlations of the power spectral densities derived from the complex valued range-Doppler map are then used to detect the target in the presence of monostatic clutter. An additional teaching relates to a utilization of the phase component to ascertain a direction of the target and thereby effect target tracking as well as target detection.
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申请公布号 |
US2003189512(A1) |
申请公布日期 |
2003.10.09 |
申请号 |
US20020116438 |
申请日期 |
2002.04.04 |
申请人 |
CHEN HAI-WAI;SCHMITT HARRY A.;DAVID GEORGE T.;BRAUNREITER DENNIS C.;SAMUEL ALPHONSO A.;DAVID JUDITH L. |
发明人 |
CHEN HAI-WAI;SCHMITT HARRY A.;DAVID GEORGE T.;BRAUNREITER DENNIS C.;SAMUEL ALPHONSO A.;DAVID JUDITH L. |
分类号 |
G01S7/288;G01S13/524;G01S13/88;(IPC1-7):G01S13/72 |
主分类号 |
G01S7/288 |
代理机构 |
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代理人 |
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地址 |
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