Original ResearchPublished 5 October 2026Elevation-cutoff-dependent convergence and steady-state performance of LEO-augmented multi-GNSS PPP time transferTianpei Liu · Daqian Lyu · Pulong Nan · Jian Lyu · Xinyun Cao · Mengqi Qiang · Zhouji Wang · Fei Shen · Caoming Fan · Yifei ZhaoFrontiers in Astronomy and Space Sciencesdoi 10.3389/fspas.2026.1969705
Original ResearchPublished 24 September 2026A multi-tier PPP-RTK positioning method based on correction-product availabilityYuhang Hu · Fang Cheng · Pengli Shen · Xin Gao · Wenshuo Sun · Zhe Hui · Xiaochun LuFrontiers in Astronomy and Space Sciencesdoi 10.3389/fspas.2026.1973781
Original ResearchPublished 23 September 2026Adaptive clock modeling for real-time GPS/Galileo PPP timing of LEO satellitesShiyu Yu · Guanqi Liu · Tianpei Liu · Xinyun Cao · Guangjie Luo · Qiwei Chen · Fei Shen · Dong ZhangFrontiers in Astronomy and Space Sciencesdoi 10.3389/fspas.2026.1967277
Original ResearchPublished 16 September 2026Scaling urban land governance in India: the NAKSHA Programme as a platform for governance innovation for sustainable citiesKunal Satyarthi · Shivangi Somvanshi · Deepak KumarFrontiers in Sustainable Citiesdoi 10.3389/frsc.2026.1874630
Original ResearchPublished 31 August 2026Periodic oscillations in the high-latitude ionosphere driven by ultralow frequency waves: simultaneous measurements using a SuperDARN radar and GNSS-TEC techniqueAtsuki Shinbori · Keisuke Hosokawa · Tomoaki Hori · Mariko Teramoto · Pavlo V. Ponomarenko · Yuki Obana · Nozomu Nishitani · Akira Sessai Yukimatu · Yuichi Otsuka · Michi Nishioka · Septi Perwitasari · Atsushi Kumamoto · Fuminori Tsuchiya · Shoya Matsuda · Yoshiya Kasahara · Kazuhiro Yamamoto · Ayako Matsuoka · Yoshizumi Miyoshi · Iku ShinoharaFrontiers in Astronomy and Space Sciencesdoi 10.3389/fspas.2026.1913757
Original ResearchPublished 9 July 2026Spontaneous behavior during recess and social-emotional adjustment in first-grade children: a multifactorial longitudinal studyAugusto Parras Albuquerque · Hugo Folgado · Guida VeigaFrontiers in Developmental Psychologydoi 10.3389/fdpys.2026.1809321
