Applications of differential barometric altimeter in ground cellular communication positioning network. Issue 3 (1st May 2020)

• Record Type: Journal Article
• Authors: Hu, Zhengqun; Zhang, Lirong; Ji, Yuanfa
• Is Part Of: IET science, measurement & technology. Volume 14:Issue 3(2020)
• Page Start: 322
• Page End: 331
• Publication Date: 2020-05-01
• Subjects: cellular radio -- height measurement -- measurement errors -- Global Positioning System -- altimeters -- barometers -- least squares approximations -- Kalman filters -- surface fitting -- spread spectrum communication -- compensation -- matrix algebra; GPS -- signal message structure -- power spectrum -- spread spectrum ranging signal -- fitting parameters -- least‐square solution -- calibration compensation -- system noise variance matrix -- measurement noise variance matrix -- multibase station correction -- height information correction calculation -- DBA system -- systematic performance -- differential barometric altimeter -- ground cellular communication positioning network -- measurement datum distribution -- altitude positioning error -- Global Positioning System -- differential barometric altimetry system -- systematic implementation level -- continuous altitude measurement -- precise altitude measurement -- DBA systematic implementation aspect -- two dimensional curved surface fitting function -- sensor measurement correction -- filtering effect -- Kalman filter -- measuring station -- multiBSs -- navigation fusion; Measurement -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Periodicals; Nanotechnology -- Periodicals; Electromagnetism -- Periodicals; Medical instruments and apparatus -- Periodicals; 621.3
• DOI: 10.1049/iet-smt.2018.5316
• Languages: English
• ISSNs: 1751-8822

Abstract

Abstract : Due to the characteristics of measurement datum distribution, the altitude positioning error of GPS (Global Positioning System) is relatively large. This study discusses a differential barometric altimetry (DBA) system from systematic implementation level and provides a key technical solution for the continuous and precise altitude measurement from the DBA systematic implementation aspect, which can provide a good supplement and enhancement for GPS. The structure of signal message is designed; the power spectrum of spread spectrum ranging signal is given, and the fusion of navigation and communication is realised. The two dimensional curved surface fitting function of pressure and temperature ( P, T ) is constructed, and the fitting parameters are calculated by the least‐square solution, which can realise calibration compensation and measurement correction of sensor. The influence of the system noise variance matrix Q k and the measurement noise variance matrix R k on the filtering effect in Kalman filter is analysed. An algorithm of multi‐base station (BS) correction is proposed, which can realise the height information correction calculation in measuring station (MS) via seamless handover between multi‐BSs. The experimental results show that the key technology solutions in DBA system can achieve a well systematic performance..