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It is shown that the direct radar return from a target has a higher Doppler shift when compared to any reflected component of this return from other nearby surfaces, if the angle of the direct return from the target to the velocity vector is smaller than that of the reflected component of the return. This is particularly the case in the common scenario of a target over a water surface which is targeted...
This paper proposes a Doppler detection method for Linear FM (LFM) waveform by identifying its location within the extended Matched Filter (MF). The extended MF of a LFM waveform is constructed by extending its frequency sweep on both sides. Doppler shift results in shifting the frequency sweep of the LFM waveform along the instantaneous frequency of its extended MF. Thus, identifying the location...
This paper proposes a method of generating a zerosidelobe code set from a given code/code set via interleaving each code with zeroes and multiplication of their matched filter outputs, resulting in complete cancellation of the side lobes while reinforcing the main lobe. The new code set is generated via up sampling each code, in the underlying desired code set, by a number belonging to a set of relatively...
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