In this paper, we propose an imaging scheme for unmanned aerial vehicle (UAV)-Enabled integrated sensing and communication (ISAC), where the UAV serves as a flexible communication auxiliary and a versatile sensing platform with the cooperation of a ground base station (GBS). To guarantee the performance of both sensing and communication, the proposed imaging scheme is based on the orthogonal frequency division modulation (OFDM) ISAC waveform and bistatic communication-assisted sensing strategy, which can be divided into three steps. Firstly, the UAV transmits OFDM ISAC signal, which contains the UAV position information to enable the communication-assisted sensing strategy. Secondly, the GBS receives the line-of-sight (LoS) ISAC signal from the UAV and the reflected ISAC signal from targets, in which the bistatic sensing architecture is designed to process data frequently and bypass the self-interference problem. Thirdly, the GBS preprocesses the received signal and reconstructs the image based on polar format algorithm (PFA) with the knowledge of UAV positions to relax the constraint of UAV trajectory. Numerical simulations are carried out to validate and evaluate the proposed UAV-enabled ISAC imaging scheme.
Imaging Based on Communication-Assisted Sensing for UAV-Enabled ISAC
2023-10-10
1706743 byte
Conference paper
Electronic Resource
English
DataCite | 2024
|ISAC with Emerging Communication Technologies
Springer Verlag | 2023
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