A paper on acoustically detecting the direction of closely-flying aircraft is now published in Advances in Space Research.   

Toshimichi Otsubo, Mihoko Kobayashi, Yusuke Yokota, Kenji Kouno, Hiroshi Araki,
Acoustic positioning of closely-flying aircraft for eye safety of space laser applications,
Advances in Space Research,
2023,
https://doi.org/10.1016/j.asr.2023.09.067