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- W2389219543 abstract "In order to avoid the ionospheric folded clutter phenomenon,high-frequency ground radar signal requires a larger unambiguous range.Increasing pulse period is simple,but it will result in the decrease of the duty-cycle.However,HFSW radar needs high duty-cycle to ensure the detection range.To solve this problem,we use genetic algorithm to design double pulse orthogonal code,making the cross-correlation peak below respective autocorrelation side-lobe peak.The un-ambiguity distance of the signal is two pulse-cycles.Furthermore,we use inverse filtering to reduce the side-lobes of the new signal.Simulation experiments show it is better than the windowing weighted method,least squares method,recursive least squares method and owns better Doppler tolerance." @default.
- W2389219543 created "2016-06-24" @default.
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- W2389219543 date "2012-01-01" @default.
- W2389219543 modified "2023-09-23" @default.
- W2389219543 title "Signal design of high-frequency ground wave radar based on orthogonal codes" @default.
- W2389219543 hasPublicationYear "2012" @default.
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