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In this paper, the problem of joint transmit waveform and receive filter design for cognitive radar (CR) is investigated. The problem is analyzed in signal-dependent interference, as well as additive channel noise for extended target with unknown target impulse response (TIR). An improved online waveform optimization design method is employed for target detection by maximizing the average signal to...
In this paper, the problem of adaptive waveform design for cognitive radar (CR) in signal-dependent interference, as well as additive channel noise is investigated. With constraints on waveform energy and bandwidth, a flexible waveform optimization method taking both detection and range resolution into account is proposed. Unlike existing optimal waveforms designed by a single design criterion, waveform...
In cryptography, a hash function is a very important cryptographic primitive with a wide range of applications. There are three required properties for a good hash function, i.e., collision, pre-image, and second pre-image resistance. In this paper, we try to contest these properties on a popular and widely used hash function called MD5 - and its two simplified versions that we made. The birthday...
DuPont1187 was frequently used as a palatable silver termination in the multilayer ceramic capacitor (MLCC). A phenomenon occurred on the palatable silver termination, which cladding material had poor connation with the sliver termination of MLCC and the failure of weld ability after aging. Base on different sintering conditions (different sintering temperature, bearing of sintering and stove environment),...
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