gSim – Low Cost Dual Frequency GPS & Galileo Simulator
Pavel Kovář, Adam Puta, Pavel Puričer and Kateřina Kovářová
The approach used in the gSim simulator is different. We generate one intermediate frequency data stream that comprises the signal of all satellites on both supporting frequencies. Such signal is firstly modulated onto the intermediate frequency using a standard commercial SDR transceiver...[more]

GNSS Constellation Specific Monthly Analysis Summary: May 2025
Narayan Dhital
This issue includes a focused analysis on reduced-dynamic orbit determination. Specifically, it will explore how satellite orbits-such as those of LEO missions-can be estimated by combining GNSS observations with physical models of orbital dynamics, supported by the solution of variational equations... [more]

Combating Air Pollution in NCT of Delhi: Strategic Pathways
A K Jain
In Delhi 72 per cent of emissions (suspended particulate matter) are from motorized vehicles. Of these, the private vehicles, which are 90 per cent of total motorized transport,carry 31 per cent of vehicular trips are responsible for 90 per cent of emissions... [more]