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https://doi.org/10.17559/TV-20250816002905

Cassegrain Antenna Assisted LTE Waveform Transmission over SDR for Robust RF Based Remote Sensing Applications

Indira S. ; Department of ECE, Excel Engineering College (Autonomous), Komarapalayam, Tamil Nadu, India *
Jayanthi K. B. ; Department of ECE, K. S. Rangasamy College of technology (Autonomous), Tiruchengode, Tamil Nadu, India

* Dopisni autor.

Sažetak

Remote sensing has become a critical technology for applications in earth observation, environmental monitoring, defence surveillance, and disaster management. Traditional systems often depend on optical or Synthetic Aperture Radar (SAR) sensors, which can be constrained by atmospheric conditions, high costs, or limited adaptability in dynamic environments. To overcome these challenges, this research introduces a novel Cassegrain antenna–assisted remote sensing system utilizing Long-Term Evolution (LTE) waveforms transmitted and received through Software-Defined Radio (SDR) platforms. The Cassegrain antenna, with its high directional gain, low sidelobe levels, and compact design, enhances long-range signal reception and spatial resolution, making it well suited for large-area monitoring. In parallel, LTE waveforms provide a cost-effective and readily available probing signal, enabling passive remote sensing without requiring dedicated radar infrastructure. The integration of SDR platforms further ensures flexibility, real-time adaptability, and reconfigurability of the system, allowing seamless experimentation across different spectrum bands and operational conditions. The proposed framework transforms the received LTE-based signals into spectrogram representations, from which robust spectral and temporal features are extracted. To ensure reliability under diverse conditions, a Scale-Invariant Deep Feature Learning Module (SIDFLM) is introduced, enabling consistent signal characterization despite variations in scale, orientation, or environmental interference. Experimental evaluations validate that the Cassegrain-LTE-SDR system significantly improves signal robustness, sensitivity, and scalability compared to conventional antenna-waveform configurations. Overall, this research demonstrates that combining high-gain Cassegrain antennas with LTE waveform-based SDR systems provides a reliable, efficient, and adaptable solution for next-generation RF-based remote sensing, with impactful applications in defence, agriculture, and disaster monitoring.

Ključne riječi

cassegrain antenna; LTE waveform; remote sensing; RF signal processing; software-defined radio (SDR)

Hrčak ID:

348691

URI

https://hrcak.srce.hr/348691

Datum izdavanja:

30.6.2026.

Posjeta: 0 *