scholarly journals Study on the Influence of Intermittent Phase Modulation on the Spectrum Shift Characteristics of Radar Signals

2020 ◽  
Vol 440 ◽  
pp. 052088
Author(s):  
Tengfei Ai ◽  
Yonghe Su ◽  
Mingxin Kou
Keyword(s):  
Phase Modulation ◽  
Spectrum Shift ◽  
Radar Signals

scholarly journals Software and Hardware Simulation of Radar System Signals of the Vertical Sounding

2020 ◽  
pp. 370-378
Author(s):  
Evgeniy N. Garin ◽  
Vasiliy N. Ratushnyak ◽  
Andrey B. Gladyshev ◽  
Dmitriy I. Smirnov
Keyword(s):  
Spectral Analysis ◽  
Phase Modulation ◽  
Radar System ◽  
Radar Signal ◽  
Atmospheric Sounding ◽  
Different Types ◽  
Software And Hardware ◽  
Radar Signals

The article deals with the main requirements for the structure of radar signals, the features of their formation, and the software and hardware radar signal complex of the vertical atmospheric sounding. The hardware radar implementation based on the PXI modules made by National Instruments and Keysight is given. The software LabVIEW model performing formation and generation of radar pulses with different types of phase and amplitude phase modulation and their spectral analysis are presented

The observation of solutions in Ni3Nb

1988 ◽  
Vol 46 ◽  
pp. 540-541
Author(s):  
Z.M. Wang ◽  
J.P. Zhang
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Phase Modulation ◽  
High Resolution Electron Microscopy ◽  
Antiphase Domain ◽  
Boundary Area ◽  
Matrix Type ◽  
Resolution Electron ◽  
Domain Boundaries ◽  
Kontorova Model

High resolution electron microscopy reveals that antiphase domain boundaries in β-Ni3Nb have a hexagonal unit cell with lattice parameters ah=aβ and ch=bβ, where aβ and bβ are of the orthogonal β matrix. (See Figure 1.) Some of these boundaries can creep “upstairs” leaving an incoherent area, as shown in region P. When the stepped boundaries meet each other, they do not lose their own character. Our consideration in this work is to estimate the influnce of the natural misfit δ{(ab-aβ)/aβ≠0}. Defining the displacement field at the boundary as a phase modulation Φ(x), following the Frenkel-Kontorova model [2], we consider the boundary area to be made up of a two unit chain, the upper portion of which can move and the lower portion of the β matrix type, assumed to be fixed. (See the schematic pattern in Figure 2(a)).

Channel Estimation Method Using Arbitrary Amplitude and Phase Modulation Schemes for MIMO Sensor

2014 ◽  
Vol E97.B (10) ◽  
pp. 2102-2109
Author(s):  
Tsubasa TASHIRO ◽  
Kentaro NISHIMORI ◽  
Tsutomu MITSUI ◽  
Nobuyasu TAKEMURA
Keyword(s):  
Channel Estimation ◽  
Phase Modulation ◽  
Estimation Method ◽  
Arbitrary Amplitude ◽  
Modulation Schemes

Next Generation Laser Voltage Probing

2008 ◽  
Author(s):  
Yin S Ng ◽  
William Lo ◽  
Kenneth Wilsher
Keyword(s):  
Phase Modulation ◽  
Phase Locked Loop ◽  
Next Generation ◽  
Solid Immersion Lens ◽  
User Friendliness ◽  
New Developments ◽  
Polarization Difference ◽  
Previous Generation ◽  
Mode Locked Laser ◽  
Optical Laser

Abstract We present an overview of Ruby, the latest generation of backside optical laser voltage probing (LVP) tools [1, 2]. Carrying over from the previous generation of IDS2700 systems, Ruby is capable of measuring waveforms up to 15GHz at low core voltages 0.500V and below. Several new optical capabilities are incorporated; these include a solid immersion lens (SIL) for improved imaging resolution [3] and a polarization difference probing (PDP) optical platform [4] for phase modulation detection. New developments involve Jitter Mitigation, a scheme that allows measurements of jittery signals from circuits that are internally driven by the IC’s onboard Phase Locked Loop (PLL). Additional timing features include a Hardware Phase-Locked Loop (HWPLL) scheme for improved locking of the LVP’s Mode-Locked Laser (MLL) to the tester clock as well as a clockless scheme to improve the LVP’s usefulness and user friendliness. This paper presents these new capabilities and compares these with those of the previous generation of LVP systems [5, 6].

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