Passive Array Tracking of a Continuous Wave Transmitting Projectile |
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Authors: | Weinstein E Levanon N |
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Institution: | Woods Hole Oceanographic Inst. Woods Hole, MA 02543; |
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Abstract: | Differential Doppler measurements by a passive array are used to track an unstable continuous wave (CW) source moving in a ballistic trajectory, e.g., a projectile carrying a proximity fuse. The ballistic equations of motion couple frequency measurements at various sections along the track with the track parameters at any arbitrary time, e.g., at impact. A nonlinear weighted leastsquare method is used to estimate the track parameters, and the resulting error covariance matrix is derived. A numerical example demonstrates the relative contributions of various frequency measurements to the estimation accuracy. |
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