Results 31 to 40 of about 783,650 (212)
The Impact of Domestic Public Health Spending on Health Outcomes in Sub-Saharan Africa: Evidence From Disability-Adjusted Life Years. [PDF]
Int J Health Plann ManageABSTRACT Sub‐Saharan Africa (SSA) continues to experience a high and uneven disease burden, mainly from HIV/AIDS, tuberculosis, and malaria. As external funding declines, the strategic allocation of domestic public health spending (DPHS) becomes crucial.
Serge Kabongo WN, Mbonigaba J.
europepmc +2 more sources
Performance assessment of PPP-AR positioning and zenith total delay estimation with modernized CSRS-PPP [PDF]
, 2021 The precise point positioning (PPP) method has become more popular due to powerful online global navigation satellite system (GNSS) data processing services, such as the Canadian Spatial Reference System-PPP (CSRS-PPP).
Kalayci, Ibrahim +3 more
core +1 more source
An assessment of the interoperability of PPP-AR network products [PDF]
The Journal of Global Positioning Systems, 2017 Integer ambiguity resolution of carrier-phase measurements from a single receiver can be implemented by applying additional satellite corrections (products) to mitigate unmodelled satellite equipment delays. Interoperability of different PPP-AR products would allow the PPP user to transform independently generated PPP-AR products to obtain multiple ...
Garrett Seepersad, Sunil Bisnath
openaire +1 more source
Are PPP tests erratically behaved? Some panel evidence [PDF]
, 2006 This paper examines whether, in addition to standard unit root and cointegration tests, panel approaches also produce test statistics behaving erratically when applied to PPP.
Hanck, C, Caporale, GM
core +4 more sources
Investigating the accuracy of GPS/Galileo PPP-AR and PPP methods in terms of observation duration and satellite combinations [PDF]
, 2021 Bu çalışmada farklı enlemlerde seçilen üç farklı Uluslararası GNSS Servisi (IGS) istasyonunun ardışık 15 günlük GPS/Galileo gözlem verileri kullanılmış, elde edilen bu gözlemler, hem geleneksel-PPP hem de PPP-AR teknikleri kullanılarak statik modda ...
Karadeniz, Barış +7 more
core +1 more source
Remote Sensing, 2021 We investigate the estimation of the fractional cycle biases (FCBs) for GPS triple-frequency uncombined precise point positioning (PPP) with ambiguity resolution (AR) based on the IGS ultra-rapid predicted (IGU) orbits. The impact of the IGU orbit errors
Lizhong Qu +6 more
doaj +1 more source
Remote Sensing, 2020 The new generations of global navigation satellite system (GNSS) space vehicles can transmit three or more frequency signals. Multi-frequency observations bring a significant improvement to precise point positioning ambiguity resolution (PPP AR). However,
Gen Liu +4 more
doaj +1 more source
Static and kinematic PPP-AR performance of low-cost GNSS receiver in monitoring displacements [PDF]
, 2023 Recently, low-cost GNSS receivers have played a significant role in displacement monitoring studies due to the increasing availability of mass-market applications.
Sermet Ogutcu +14 more
core +2 more sources
Remote Sensing, 2019 Compared with the traditional ionospheric-free linear combination precise point positioning (PPP) model, the un-differenced and uncombined (UDUC) PPP model using original observations can keep all the information of the observations and be easily ...
Gen Liu, Xiaohong Zhang, Pan Li
doaj +1 more source
Investigation of Positioning Accuracy of AR Approach on PPP Method [PDF]
, 2021 Yüksek Lisans TeziGNSS ile konum belirleme uzun yıllardan beri jeodezi ve diğer yer bilimleri gibi pek çok alanda yaygın şekilde kullanılmaktadır. Yer kabuğu hareketleri, deformasyon izleme, ulusal/uluslararası datumların belirlenmesi gibi pek çok ...
Atiz, Ömer Faruk
core +2 more sources