Results 11 to 20 of about 31,123 (259)
Review of PPP–RTK: achievements, challenges, and opportunities
Satellite Navigation, 2022 The PPP–RTK method, which combines the concepts of Precise of Point Positioning (PPP) and Real-Time Kinematic (RTK), is proposed to provide a centimeter-accuracy positioning service for an unlimited number of users.
Xingxing Li +6 more
doaj +2 more sources
Geo-spatial Information Science, 2021 Precise point positioning with ambiguity resolution (PPP-AR) is a powerful tool for geodetic and time-constrained applications that require high precision.
Omer Faruk Atiz +4 more
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A new receiver clock model to enhance BDS-3 real-time PPP time transfer with the PPP-B2b service
Satellite Navigation, 2023 A new Precise Point Positioning (PPP) service, called the PPP-B2b service, has been implemented in the BeiDou-3 Navigation Satellite System (BDS-3), which brings new opportunities for time transfer.
Yulong Ge +6 more
doaj +2 more sources
Remote SensingThe BeiDou Navigation Satellite System (BDS) offers orbit and clock corrections through the B2b signal, enabling Precise Point Positioning (PPP) without relying on ground communication networks.
Lewen Zhao, Wei Zhai
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Single-Dose TACE-Like Injection of Sustained-Release Panobinostat/IL-12 Polymeric Microparticles is Effective in Preclinical Liver Cancer Models. [PDF]
Adv Sci (Weinh)A novel PLGA/PBAE polymer microparticle platform revolutionizes intermediate‐stage liver cancer treatment by co‐delivering panobinostat and IL‐12 via a single TACE‐like injection. This sustained‐release system overcomes tumor immunosuppression, triggers robust innate and adaptive immune responses, and establishes tertiary lymphoid structures ...
Yu H +7 more
europepmc +2 more sources
A Fish MDA5 Integrates Canonical RIG-I and MDA5 Ligand Recognition. [PDF]
Adv Sci (Weinh)These results show that the large yellow croaker lacks RIG‐I, yet its MDA5 senses both 5′ppp‐dsRNA and long dsRNA. A flexible RNA‐capping loop in the MDA5 C‐terminal domain enables two ligand‐binding modes. This dual recognition signals through MAVS–STING–TBK1/IRF3 and induces type I interferons, revealing unexpected plasticity in vertebrate antiviral ...
Li W +7 more
europepmc +2 more sources
Assessment of the Feasibility of PPP-B2b Service for Real-Time Coseismic Displacement Retrieval
Remote Sensing, 2021 Traditional coseismic displacement retrieval generally uses real-time kinematic (RTK) and precise point positioning (PPP) services. However, both RTK and real-time PPP need a network link to transmit the corrected data.
Hao Yang +5 more
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The whole life cycle model of China’s PPP water project: based on IDEF0 approach [PDF]
E3S Web of Conferences, 2021 As a country with a large population and rapid development, the shortage of water resources is a serious challenge facing China. To meet the needs of domestic and industrial water, since the 1990s, China has begun to try to adopt the PPP delivery model ...
Tian Jiawei, Chen Chuan
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PLoS ONE, 2023 Asset-backed securitization (ABS) is currently used to refinance public-private partnership (PPP) projects in the infrastructure field. To stimulate the investors' enthusiasm, this study evaluated the investment environment of PPP projects asset-backed ...
Lijun Zhang, Junwen Feng, Bo Feng
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Optimization method for multi-constellation precise point positioning performance evaluation [PDF]
Jisuanji gongcheng, 2019 In order to reduce the number of parameters to be estimated and improve the positioning accuracy in the data processing of multi-constellation Precise Point Positioning(PPP),a performance evaluation method based on ambiguity integer solution for the ...
HE Wei,GUO Chengjun,TIAN Zhong
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