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Optoelectronic support for Inertial Navigation Systems

Florczak Dawid, Mazurek Gustaw

International Journal of Electronics and Telecommunications

2025

Vol. 71, No. 4

Microelectromechanical systems (MEMS)-based in-ertial navigation units are widely utilized due to their low cost, small form factor, and low power consumption. However, they face critical limitations in high-speed rotating systems due to gyroscopic drift, saturation, and sensitivity to environmental conditions. This paper proposes a novel method for supporting inertial navigation by estimating angular velocity using ambient electromagnetic radiation detection, offering a drift-resilient and interference-immune solution.

A new algorithm for generating integer partitions and its parallel implementations on CPU and FPGA

Nałęcz Marek, Mazurek Gustaw

International Journal of Electronics and Telecommunications

2025

Vol. 71, No. 4

In this paper, the long-known bit representation of integer partitions was used in a novel way to develop an algorithm for generating the next partition of an integer n. This algorithm is both loopless and conditionless (and therefore has strictly constant execution time). These features lead to an efficient and highly scalable parallel implementation on a modern multi-core CPU processor or a modern FPGA chip. In the CPU case, just 30 processor clock cycles are required to generate the next partition when n < 128. In the latter case, a single one of the parallel instances uses only 1,595 look-up tables and 962 registers for n < 128. It can produce the next partition in just 6 clock cycles. Even cost-effective FPGAs can hold a few dozen such instances.

Impact of Climatic Conditions to Capacity of Airborne Ultrasonic Channel

Mazurek Gustaw

International Journal of Electronics and Telecommunications

2019

Vol. 65, No. 3

455--461

In this paper, we estimate the upper limit of the transmission data rate in airborne ultrasonic communications, under condition of the optimal power allocation. The presented method is based on frequency response of a channel in case of single-path LOS propagation under different climatic conditions and AWGN background noise model, and it can be easily extended to the case of frequency-dependent noise. The obtained results go beyond the discrete distances for which experimental SNR values were available, and are more accurate than the previous calculations in the literature, due to the inclusion of the channel frequency response and its changes over the distance. The impact of air temperature, relative humidity and the atmospheric pressure on the channel capacity is also investigated. The presented results can serve as a reference during the design of airborne ultrasonic communication systems operating in the far-field region.