发明名称 |
A METHOD OF GENERATING ACCURATE ESTIMATES OF AZIMUTH AND ELEVATION ANGLES OF A TARGET FOR A PHASED-PHASED ARRAY ROTATING RADAR |
摘要 |
A method and apparatus for generating accurate estimates of a radar target's azimuth and elevation angles for a phased-phased array rotating radar. Scan modulated coherently integrated (SMCI) monopulse curves are generated from a measured one-way transmit antenna pattern and three receive antenna patterns. The SMCI monopulse curves are calculated in advance for the expected beam steers. To utilize the SMCI monopulse curves, two-way Sum, Delta-Azimuth and Delta-Elevation target returns are coherently integrated, the target's monopulse ratios calculated, and the SMCI monopulse curves or polynomials used to calculate the target's U-offset and V-offset sine-space angles, which are added to the radar's beam steer to get an improved estimate of the target's sine-space angular position denoted as U<SUB>tgt </SUB>and V<SUB>tgt</SUB>. A coordinate system transformation transforms U<SUB>tgt </SUB>and V<SUB>tgt </SUB>to azimuth and elevation angles in a non-rotating coordinate system. |
申请公布号 |
EP1904870(B1) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20060760594 |
申请日期 |
2006.06.01 |
申请人 |
RAYTHEON COMPANY |
发明人 |
MANOOGIAN, DAVID, V.;PITSTICK, GERALD, M.;CANGEME, JOHN |
分类号 |
G01S13/44 |
主分类号 |
G01S13/44 |
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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