An advanced method of signal decomposition-advanced adaptive chirplet decomposition(AACD) is presented to separate the radar fuze mixed in single-channel. The adds curvature factor Gauss decomposition (AGCD), thus it can be used decompose nonlinear time varying components. It uses fast algorithm and trust region optimize arithmetic process, then all parameters solved accurately quickly, signal's time-frequency distribution without cross terms obtained. In simulation, improve complex signals,...

By employing a tiny frequency offset across the array elements, diverse (FDA) produces beampattern with property of being range-angle-dependent. However, traditional FDA has many maxima at undesired range-angle couples, which is unfavorable for target localization and jamming suppression. In this paper, novel scheme Hamming interelement spacing, namely, HIS-FDA, proposed. adopting window weighted spacing offsets optimized by genetic algorithm, HIS-FDA dot-shaped well-performed beampattern,...

A novel parameter estimation method of frequency hopping spread spectrum (FHSS) signal is proposed. The observed divided into multiple segments and forms an matrix, performing FFT on the matrix with different segment lengths to obtain corresponding matrix. By analyzing convergence characteristics symbol period realized, this basis, symbol‐frequency distribution obtained its projected in Frequency‐Amplitude plane further select candidate frequencies. composed single signals constructed...

A low-profile wideband stacked tightly coupled patch array (TCPA) with parasitic strips is presented in this brief. Analyzed via a two-port network and originated from the traditional TCPA, evolution of TCPA element conducted by gradually introducing superstrate, strips, ultimate one can exhibit an impedance bandwidth 131.9%. Then, employing practical feeding structure enables implementation to operate 102.0% band. Eventually, <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Interference suppression and information extraction in pseudorandom code phase modulated pulse Doppler detection system is a practical challenging problem. In order to extract useful range velocity the presence of single-channel multi-component periodic interferences, this paper presents an interference method based on eigenvector analysis independent component (ICA) by leveraging characteristic generalized periodicity received signal. Using period transmitted signal, we divide observed...

A new method based on phase difference analysis is proposed for the single-channel mixed signal separation of radar fuze. This used to estimate mixing coefficients de-noised signals through cumulants signals, solve candidate data set by and analytical form, resolve problem vector ambiguity analyzing differences. The realized exchanging solutions. waveform similarity are calculated, time–frequency distributions separated analyzed. results show that effective.

Proton therapy is deemed the cornerstone of cancer treatment and regarded as one fastest-developing therapeutic modalities. The development new methods to enhance biological effectiveness proton (PT) a focal point in field radiation oncology research. This work introduced novel nitrogen-targeted proton-carbon-alpha approach, Proton-CAT, which involves generation carbon-12 alpha particles through interaction protons with nitrogen-15. based on reaction capture by 15N isotope. Here, we...

Excellent antiwear performance, high bearing capacity, and long service life are essential prerequisites for the reliability durability of Si‐based micro/nanodevice operation. To improve property prolong micro‐/nanodevices under loads, graphene oxide (GO) nanosheets, quantum dots (GQDs), ionic liquid‐capped GQDs (IL‐GQDs) used to create three kinds multilayer films as solid lubricants, that is, single‐component 5 , (GO/GQDs) (GO/IL‐GQDs) films. The results show composite possesses excellent...

Membrane dispersion has extensive application prospects in chemical and petrochemical industries, water treatment, various other fields. The membrane flux serves as a pivotal parameter for assessing the production efficiency, optimization, scalability. Nevertheless, establishing mathematical model that accurately describes relationship between its associated factors is challenge. Herein, variation of multichannel ceramic membranes during bubble preparation was investigated by experimental...

To separate the mixture of two radar fuze signals - linear frequency modulation (LFM) and sinusoidal (SFM) overlapped both in time domain single channel, method zero phase filtering fractional Fourier is proposed. The transform (FRFT) mixed signal derived it can be found that separation improved time-frequency distribution would more effective, then introduced to which keeps initial information. At last, by calculating waveform similarity coefficient, difference value average amplitude...

Unlike phased array, frequency diverse array (FDA) adopts linearly increased offset across the elements, resulting in range-angle-dependent beampattern. Thus, it has application potential aspect of mainlobe interference suppression. In this paper, based on multiple-input multiple-output (MIMO) scheme with multiple matched filters at receiver, a two dimensional constrained minimum-variance (TD-LCMV) adaptive beamforming approach is presented for range-angle Furthermore, anti-jamming...

Evaporation duct can increase radar detection range remarkably. Since this characteristic, the shore-based microwave over-the-horizon could be set on islands for sea area having no mountains and far away from main land, which monitor distant targets continuously efficiently. In order to find best antenna altitude installed in tropic water island-reefs of Western Pacific, statistic probability evaporation heights were made average detect ranges simulated different frequency with marine...

Membrane dispersion has extensive application prospects. The membrane flux serves as a pivotal parameter for assessing production efficiency, optimization, and scalability. Nevertheless, it remains great challenge in establishing mathematical model that accurately describes the relationship between its associated factors. Herein, variation of multi-channel ceramic membranes during bubble preparation was investigated by experimental analysis modeling. is significantly influenced factors such...