Zobrazeno 1 - 10
of 3 666
pro vyhledávání: '"carrier phase"'
Publikováno v:
Hangkong bingqi, Vol 31, Iss 3, Pp 66-71 (2024)
This paper analyzes the characteristics of satellite navigation signals received by the high-speed rotating carrier in order to solve the problems existing in the application of satellite navigation receiver in the high-speed rotating carrier, studie
Externí odkaz:
https://doaj.org/article/2d3977761b204660905f7441f2e66bc0
Publikováno v:
Radioengineering, Vol 33, Iss 1, Pp 145-154 (2024)
The carrier phase received at the receivers of the Global Positioning System (GPS) links is used to detect navigation data and to precisely determine the position, speed and time corresponding to the user's equipment. Therefore, subsystems for carrie
Externí odkaz:
https://doaj.org/article/3c5e4feff5a64d4594705a49c690f3fe
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
The combination of high-order modulation formats and linewidth-tolerant carrier phase estimation (CPE) can effectively improve spectrum efficiency and relax the limitation of laser linewidth. This paper presents a simple two-stage CPE algorithm for p
Externí odkaz:
https://doaj.org/article/e4ea9c85ba694b40be7c953d8f6880ac
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 4, Pp 1-8 (2024)
High-order modulations are currently widely used in optical communications to increase the data rate. However, due to the existence of laser phase noise, the performance of high-order modulated systems will be greatly degraded. Therefore, phase estim
Externí odkaz:
https://doaj.org/article/da6d846f10a44891863a2c622c52e5fd
Publikováno v:
IEEE Open Journal of Power Electronics, Vol 5, Pp 864-872 (2024)
This paper considers a multi-carrier modulation in which the phase-shifts between the carriers are adjusted to reduce the rms current flowing into the active split dc-link capacitors of four-wire three-phase inverters when the neutral node is modulat
Externí odkaz:
https://doaj.org/article/f97e9196dd7d4f9188b4a72e43704288
Publikováno v:
Remote Sensing, Vol 16, Iss 21, p 3988 (2024)
The availability of Global Navigation Satellite System (GNSS) raw observations in smartphones has driven research into low-cost GNSS solutions, especially in challenging urban environments, which have garnered significant attention from scholars in r
Externí odkaz:
https://doaj.org/article/23c51e8c4e04468ba1459a163bfee2a7
Publikováno v:
Remote Sensing, Vol 16, Iss 20, p 3803 (2024)
Ground subsidence caused by underground coalmining result in the formation of ponding water on the ground surface. Monitoring the surface water level is crucial for studying the hydrologic cycle in mining areas. In this paper, we propose a combined t
Externí odkaz:
https://doaj.org/article/9509bd8ff3924de7a89c989c5fc4dcc6
Publikováno v:
All Earth, Vol 35, Iss 1, Pp 158-167 (2023)
ABSTRACTThe Global Navigation Satellite System (GNSS) precise point positioning (PPP) from carrier-phase data is influenced by complex elements. The error sources are divided into two categories according to their relation to the signal propagation p
Externí odkaz:
https://doaj.org/article/8d4dc89731a4428f9bc08dd1474a1fe3
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 674-682 (2023)
The dual three phase machine drive system with the common dc-link capacitors has been widely used in many industrial applications due to the advantages such as small stallion volume, reduced cost and flexibility. The large ripple current caused by th
Externí odkaz:
https://doaj.org/article/d7235ec77d9046ea95269d9d12f02b09