In this paper, we describe the details of an interactive online web-based degree program in the area of Computer Science with specialization in Free/Open Source Software (FOSS) that has been successfully running for two years in a leading technological university in India. The subjects taught as well as the tools and platforms used in delivering the course are exclusively FOSS and put together by the university team, as described here. We also describe the details of the program, its goals and purpose, the manner of its implementation, the learnings we have had and the challenges being faced in going forward.
A GPS signal simulator is a versatile instrument used for testing and performance evaluation of a GPS receiver during its design and manufacture. A real‐time GPS signal simulator (RTGPSSS) outputs the L1 signal of GPS satellites as received by the GPS receiver at its antenna. The generation of the GPS L1 signal for our design specification requires the transmission of a coarse acquisition (CA)‐code, which is a pseudorandom noise (PRN) code at a rate of 1.023 Mchip/s, and the calculation of Doppler frequency at a rate of 19.55 μs under high receiver dynamics. These critical timing requirements necessitate parallel processing techniques. In this paper, the design of a 12‐channel RTGPSSS using a digital signal processor (DSP)–based parallel processing system is presented. The effects of receiver dynamics, receiver clock drift, multipath, and atmosphere anomalies (ionospheric and tropospheric delay) are also incorporated in the simulated GPS signal.
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