发明名称 |
Extraction of relative signals from closely spaced targets in a monopulse system |
摘要 |
Systems and methods are provided for extracting relative signal parameters representing two closely spaced targets from monopulse scan data. A maximum quadrature angle value from the scan data is compared with a threshold quadrature value representing a noise level. A linear polynomial model is utilized if the maximum quadrature angle exceeds the threshold value. The linear polynomial model fits a function of the azimuth angle values and quadrature angle values to a linear function of an exponential parameter derived from the boresight angles to produce polynomial coefficients and determines the relative signal parameters from the polynomial coefficients. A cubic polynomial model is utilized if the maximum quadrature angle fails to exceed the threshold value. The cubic polynomial model fits azimuth angle values to a cubic function of corresponding boresight angles to produce a set of polynomial coefficients and determines the relative signal parameters from the set of polynomial coefficients.
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申请公布号 |
US7911371(B2) |
申请公布日期 |
2011.03.22 |
申请号 |
US20090393656 |
申请日期 |
2009.02.26 |
申请人 |
NORTHROP GRUMMAN SYSTEMS CORPORATION |
发明人 |
KARAM MOSTAFA |
分类号 |
G01S13/00 |
主分类号 |
G01S13/00 |
代理机构 |
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代理人 |
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