Shadow Toolbox (1st release)
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Shadow is a Matlab toolbox written to detect the GNSS satellite in the shadow of the earth and remove them from the RINEX observation file. The main toolbox performs the following tasks: 1- Reads Rinex observation file 2- Reads precise ephemeris file (SP3) 3- Detect the satellite in the shadow of the Earth 4- Remove the observation of the satellite and create a refined Rinex
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Investigation of GPS draconitic year effect on GPS time series of eliminated eclipsing GPS satellite dataAllahvirdizadeh, Amir ; Asgari, Jamal; Amiri-Simkooei, Alireza (2016)GPS draconitic signal (351.6 ± 0.2 days) and its higher harmonics are observed at almost all IGS products such as position time series of IGS permanent stations. Orbital error and multipath are known as two possible sources ...
Allahvirdizadeh, Amir; El-Mowafy, Ahmed (2022)The attitude information of a CubeSat is essential to keeping the satellite in its favourable orientations in the mission and sensor positioning using precise orbit determination. The attitude of CubeSats can be determined ...
Garnache, C.; Mérel, P.; Howitt, R.; Lee, Juhwan (2017)© 2017 Oxford University Press and Foundation for the European Review of Agricultural Economics. This paper proposes a new information-based method to calibrate the shadow values of constraints in Positive Mathematical ...