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We have developed a high-resolution penetrating radar to measure glacial ice thickness. With an operating frequency band of 100-150 MHz, this radar can provide a range resolution of less than 2 m in ice. The radar is designed to measure ice sheet thickness up to 3000 m. The system uses pulse compression and coherent integration techniques to obtain a high(More)
In the framework of Data Vitalization, data has inner connection. In this paper, we apply it to recommendation system of Social Networking Services. With the development of Social Networking Services, the research and application of SNS flourish. In SNS, recommendation for users is a significant feature. Recommending items that will be accepted by users is(More)
The paper presents the design and performance of a V-band radiometer MMIC with 0.1μm GaAs pHEMT technology. The circuit includes a frequency double LO chain and a resistive mixer. The resistive mixer with balance structure topology can improve the image-rejection ratio. Compared with other mixers, the sub-harmonic mixer can achieve high isolation.(More)
  • Yu Jian, Guoqing Luo
  • 2015 IEEE 16th International Conference on…
  • 2015
In this paper, a novel linear polarized cavity-backed antenna based on normal InP HBT technology is proposed and simulated. In this design, half-mode substrate integrated waveguide (HMSIW) technique is used to create a radiating aperture, which helps minify the InP substrate and reduce the cost. The proposed antenna is numerically investigated using HFSS.(More)
This paper is to investigate the effects of nozzle geometry on reaction thrust characteristics under various nozzle dimensions, inlet and outlet conditions. The reaction thrust formula is deduced based on the elementary momentum theory through the theoretical analysis. CFD simulations are conducted to acquire the pressure and velocity distributions on the(More)
The emission spectra of air dielectric barrier discharge were measured through dielectric barrier discharge experiment system, and the influence of argon fraction on the emission spectra of air dielectric barrier discharge was studied in the present paper. In the wavelength range of 280-500 nm, the second positive band system of nitrogen N2 (C3 pi(u)-B 3(More)
As an important index of radar, the range resolution is mainly limited by bandwidth of radar system. In this paper, a new method of improving radar range resolution is proposed based on waveform characteristic identification techniques. The results of data simulation and real test of flight show that the range resolution can be improved markedly with the(More)
This paper discussed the coagulation characteristics of BPA with polyaluminum chloride (PACl-Al(13)) as coagulant, examined the impact of coagulation pH, PACl-Al(13) dosage, TOC (total organic carbon) and turbidity on BPA removal, and analyzed the possible dominant mechanisms in water coagulation process. Formation and performance of flocs during(More)
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