Results 41 to 50 of about 1,019,523 (294)

High-precision indoor fast positioning algorithm based on carrier phase

Tongxin xuebao, 2022
In order to improve the positioning accuracy and the speed of position solution in indoor wireless environment, a high-precision indoor fast positioning algorithm based on carrier phase was proposed.By introducing the reference terminal, the influence of
Shaoshuai FAN, Zhiqiang RONG, Hui TIAN, Lihua LI   +3 more
doaj  

Ultrafast carrier dynamics in thin-films of the topological insulator Bi2Se3 [PDF]

, 2013
Transient reflectivity measurements of thin films, ranging from 6 to 40 nm in thickness, of the topological insulator Bi2Se3 revealed a strong dependence of the carrier relaxation time on the film thickness.
Babakiray, Sercan, Bristow, Alan D., Glinka, Yuri D., Holcomb, Mikel B., Johnson, Trent A., Lederman, David   +5 more
core   +3 more sources

Performance Analysis of a RTK Vector Phase-Locked Loop Architecture for GPS Signal Tracking in Degraded Environments

Navigation, 2023
This paper investigates the application of a vector tracking approach to carrier phase tracking for improved tracking in degraded signal environments. In contrast to many vector-based carrier phase tracking approaches, the algorithms described in this ...
Scott M. Martin
doaj   +1 more source

Carrier-wave Rabi flopping: role of the carrier-envelope phase

Optics Letters, 2004
Recently, a dependence of Rabi flopping on the carrier-envelope phase of the exciting laser pulses was predicted theoretically [Phys. Rev. Lett. 89, 127401 (2002)] for excitation of a thin semiconductor film with intense few-cycle pulses. Here, we report corresponding experiments on 50-100-nm thin GaAs films excited with 5-fs pulses.
Mücke, O. D., Tritschler, T., Wegener, M., Morgner, U., Kärtner, F. X., Khitrova, G., Gibbs, H. M.   +6 more
openaire   +6 more sources

Indoor EKF localization algorithm based on RFID carrier phase

Tongxin xuebao, 2022
In order to solve the problem of low localization accuracy caused by indoor environment interference in the existing UHF RFID localization methods, an indoor extended Kalman filter (EKF) localization algorithm based on frequency hopping assisted RFID ...
Liangbo XIE, Xixi LIU, Yong WANG, Mu ZHOU, Zengshan TIAN   +4 more
doaj  

Modulator for tone and binary signals [PDF]

, 1975
Tones and binary information are transmitted as phase variations on a carrier wave of constant amplitude and frequency. The carrier and tones are applied to a balanced modulator for deriving an output signal including a pair of sidebands relative to the ...
Fitch, E. J., Lerner, T., Mcchesney, J. R.   +2 more
core   +1 more source

Stressful Events Reported by Childhood Cancer Survivors and Community Controls From the St. Jude Lifetime (SJLIFE) Cohort: A Mixed Method Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Characterizing stressful events reported by childhood cancer survivors experienced throughout the lifespan may help improve trauma‐informed care relevant to the survivor experience. Methods Participants included 2552 survivors (54% female; 34 years of age) and 469 community controls (62% female; 33 years of age) from the St.
Megan E. Ware, Colter K. Clayton, Fang Wang, Sedigheh Mirzaei, Kyla Shelton, Tara M. Brinkman, Victoria Willard, Katianne M. Howard Sharp, Kevin Krull, Lindsay F. Schwartz, Melissa M. Hudson, Gregory T. Armstrong, Kirsten K. Ness, Rachel T. Webster   +13 more
wiley   +1 more source

Linear phase demodulator including a phase locked loop with auxiliary feedback loop [PDF]

, 1976
A phase modulated wave that may have no carrier power is demodulated by a phase locked loop including a phase detector for deriving an A.C. data output signal having a magnitude and a phase indicative of the phase of the modulated wave.
Rippy, R. R.
core   +1 more source

Microphotoluminescence study of disorder in ferromagnetic (Cd,Mn)Te quantum well

, 2004
Microphotoluminescence mapping experiments were performed on a modulation doped (Cd,Mn)Te quantum well exhibiting carrier induced ferromagnetism. The zero field splitting that reveals the presence of a spontaneous magnetization in the low-temperature ...
Bertolini, M., Cibert, J., Ferrand, D., Gaj, J. A., Golnik, A., Kossacki, P., Maslana, W., Plochocka, P., Tatarenko, S.   +8 more
core   +1 more source

A carrier removal method in phase measuring deflectometry based on the analytical carrier phase description

Optics Express, 2013
In phase measuring deflectometry (PMD), a camera observes a sinusoidal fringe pattern via the surface of a specular object under test. Any slope variations of the surface lead to distortions of the observed pattern. Without height-angle ambiguity, carrier removal process is adopted to evaluate the variation of surface slope from phase distribution when
Huimin, Yue, Yuxiang, Wu, Biyu, Zhao, Zhonghua, Ou, Yongzhi, Liu, Yong, Liu   +5 more
openaire   +2 more sources