[2] [2] YU Min，WAN Jilin，LIU Yang，et al. Improved bluetooth-based indoor localization for devices heterogeneity using back- propagation neural network［J］. IEEE Sensors Journal，2024，24（17）：27763-27776.

[3] [3] NARASIMMAN S C，ALPHONES A. DumbLoc：dumb indoor localization framework using Wi-Fi fingerprinting［J］. IEEE Sensors Journal，2024，24（9）：14623-14630.

[4] [4] LI Linsen. Node location method of ecological environment monitoring network based on zigbee［J］. Discrete Dynamics in Nature and Society，2022，2022（1）：5854569.

[5] [5] MAHONY R，HAMEL T，PFLIMLIN J M. Nonlinear complementary filters on the special orthogonal group［J］. IEEE Transactions on Automatic Control，2008，53（5）：1203-1218.

[6] [6] LUDWIG S A，BURNHAM K D. Comparison of Euler estimate using extended Kalman filter，madgwick and mahony on quadcopter flight data［C］//Dallas，TX：2018 International Conference on Unmanned Aircraft Systems（ICUAS），2018：1236-1241.

[8] [8] WILLIAM M W，SHAABAN M E，ELIAS C M，et al. Multiple estimation filters integration for sensor fusion localization module［C］//Giza，Egypt：2023 5th Novel Intelligent and Leading Emerging Sciences Conference（NILES），2023：316-321.