Under the framework of light field, diffusing angle and spatial location holographic diffusor is investigated for integral imaging based field display. These two parameters are considered in terms continuous reconstruction object point blind visual spots elimination viewer. The concept joint view as well essence this interpolation analyzed theoretically, a new phenomenon caused by additional plane called double window violation also deduced. To best our knowledge, first report on...

We report an optical vector network analyzer (OVNA) based on double-sideband (DSB) modulation using a dual-parallel Mach–Zehnder modulator. The device under test (DUT) is measured twice with different schemes. By post-processing the measurement results, response of DUT can be obtained accurately. Since DSB used in our approach, range doubled compared conventional single-sideband (SSB) modulation-based OVNA. Moreover, accuracy improved by eliminating even-order sidebands. key advantage...

Limited available elemental image array resources may be the most severe bottleneck for promotion and application of integral-imaging-based 3D display. We propose a nonlinear mapping method generation an to get photorealistic pseudoscopic free display based on parallel light field reconstruction nature integral imaging system. All rays emitted from panel are classified into corresponding according its direction, all fields captured as orthogonal projections scene before synthesizing using...

Frequency estimation of microwave signals is a crucial functionality for applications ranging from biomedical engineering to electronic warfare systems. Photonics-based frequency measurement systems offer advantages flexible reconfigurability and wide bandwidth compard methods. However, photonic based are limited by trade-offs between range accuracy. Here, we propose experimentally demonstrate identification system with ultrahigh accuracy 900 kHz, large 39 GHz, the capability multiple...

We report a method to significantly improve the accuracy of an optical vector network analyzer (OVNA) with double-sideband (DSB) modulation. The measurement errors DSB-OVNA mainly derive from carrier uncertainty and beating between higher order sidebands. propose three-step accuracy-enhanced algorithm eliminate these perfectly. A theoretical model is built analyze potential as well find way remove them. Excellent improvement OVNA confirmed by proof-of-concept experiment. shows ultrahigh...

We propose and experimentally demonstrate a microwave frequency measurement system based on the photonic technique. An amplitude comparison function is constructed to perform frequency-to-power mapping non-sliced broadband optical source. The results are fed into machine learning module which can be utilized minimize differential mode noise of caused by polarization fluctuation. reconfigurable with adjustable bandwidth adjusting dispersion group delay signals at orthogonal polarizations...

De-noising is a substantial issue in hydrologic time series analysis, but it difficult task due to the defect of methods. In this paper an energy-based wavelet de-noising method was proposed. It remove noise by comparing energy distribution with background distribution, which established from Monte-Carlo test. Differing threshold (WTD) basis coefficient thresholding, proposed based on series. can distinguish deterministic components series, and uncertainty result be quantitatively estimated...

We propose a novel single-notch microwave photonic filter (MPF) using nonsliced amplified spontaneous emission (ASE) source and laser diode (LD). The ASE is used for implementation of phase tunable bandpass MPF, where the participation an LD enables simultaneous realization allpass without adding more devices into system. By destructive interfering between MPF can be achieved with center frequency. Compared previous approach based on source, proposed has broader frequency range much simpler...

We propose a photonic approach to generating frequency-doubled triangular waveforms using dual-parallel Mach–Zehnder modulator (DPMZM). Most previous modulator-based schemes require additional processing of optical sidebands filters or dispersive element. In our work, components is no longer necessary. The with repetition rate twice the frequency applied microwave signal can be directly generated by properly setting bias and driven DPMZM. Since there processing, proposed structure cost...

The combination of artificial intelligence and medical imaging technology is profoundly affecting the development technology.Electrical impedance tomography (EIT) a noninvasive for estimating internal distribution body becoming promising technology.In this paper, we focus on improving EIT resolution by incorporating direction-of-arrival (DOA) theory into model use DOA estimation algorithm to solve inverse problem EIT.The m-Capon proposed in paper based beamforming framework, there no need...

Trapped ions offer an excellent platform to investigate fascinating phenomena in quantum physics. Here we propose experimental scheme achieve Anderson localization of phonons using ion chain under irradiation a laser Bessel beam. The quasiperiodicity comes from the characteristic beam, which is only relevant positions individual with respect standing wave rather than internal degrees freedom ions. We demonstrate, by inverse participation ratio, delocalization-localization transition,...

We present a method to realize single-notch microwave photonic filter (MPF) based on interferometry of single, low-coherence broadband optical source (BOS). Normally, notch MPF requires independent control two sources located in different wavebands. In this work, we use single BOS accurately perform destructive interference between bandpass and an all-pass MPF. A frequency bandwidth freely tunable can thus be realized. The proposed is theoretically analyzed experimentally demonstrated. depth...

The geomagnetic induced current (GIC) due to storm will damage the utilities in power grid, and affect stability running of system. With growing economic requirement for energy some regions gradually, this transmission mode that two or more High Voltage Direct Current (HVDC) systems share common AC system, so called Multi-Infeed (MIDC) systems. So research effect play an important role at present. For this, with software PSCAD/EMTDC, paper based on modified model 3 generators 9 buses BPA...