Research on System Modeling and Strategic Optimization of Low-altitude Economic Regional Synergistic Development in the Pearl River-West River Economic Belt

Against the backdrop of intensified global competition in the low-altitude economy, this paper takes the Pearl River-Xijiang Economic Belt as a case study and constructs a three-dimensional collaborative framework of "technology - policy - environment" to explore regional differentiated development paths. Through the mining of public opinion data from Baidu Index from 2023 to 2025, grey prediction GM and text mining, it reveals public perception, market demand and technological evolution trends. Then, by introducing life-cycle cost-benefit analysis, implementation obstacles and stakeholder conflicts, it identifies three major tensions: airspace safety, data sovereignty and green transformation. The research finds that while technological polarization and policy windows coexist, environmental externalities and regional equity risks are often overlooked. Therefore, this paper proposes embedding low-noise and low-consumption technologies, green power and inclusive infrastructure into the main line of "technology-driven digital transformation", and achieving high-quality, inclusive and sustainable development of the low-altitude economy through institutional design. The research conclusions provide theoretical basis and policy tools for cross-border collaborative governance in the Guangdong-Hong Kong-Macao Greater Bay Area and ASEAN.