[3] [3] VIANI F,ROCCA P,OLIVERI G,et al. Localization,tracking and imaging of targets in wireless sensor networks:an invited review[J]. Radio Science, 2018,46(5):1-12.

          VIANI F,ROCCA P,OLIVERI G,et al. Localization,tracking and imaging of targets in wireless sensor networks:an invited review[J]. Radio Science, 2018,46(5):1-12.

[4] [4] PATWARI N,ASH J N,KYPEROUNTAS S,et al. Locating the nodes:cooperative localization in wireless sensor networks[J]. IEEE Signal Processing Magazine, 2015,22(4):54- 69.

          PATWARI N,ASH J N,KYPEROUNTAS S,et al. Locating the nodes:cooperative localization in wireless sensor networks[J]. IEEE Signal Processing Magazine, 2015,22(4):54- 69.

[6] [6] GHOLAMI M,CAI N,BRENNAN R W. An arti.cial neural network approach to the problem of wireless sensors network localization[J]. Robot Comput-Integr Manuf, 2016,29 (1):96-109.

          GHOLAMI M,CAI N,BRENNAN R W. An arti.cial neural network approach to the problem of wireless sensors network localization[J]. Robot Comput-Integr Manuf, 2016,29 (1):96-109.

[7] [7] ZHUANG Y,LI Y,QI L,et al. A two .lter integration of MEMS sensors and WiFi fingerprinting for indoor positioning[J]. IEEE Sensors Journal, 2016,16(13):5125-5126.

          ZHUANG Y,LI Y,QI L,et al. A two .lter integration of MEMS sensors and WiFi fingerprinting for indoor positioning[J]. IEEE Sensors Journal, 2016,16(13):5125-5126.

[8] [8] DAI H,YING W H,XU J. Multi-layer neural network for received signal strength-based indoor localization[J]. IET Communications, 2016,10(6):717-723.

          DAI H,YING W H,XU J. Multi-layer neural network for received signal strength-based indoor localization[J]. IET Communications, 2016,10(6):717-723.

[9] [9] KALMAN R E. A new approach to linear filtering and prediction problems[J]. Journal of Fluids Engineering, 1960,82(1):35-45.

          KALMAN R E. A new approach to linear filtering and prediction problems[J]. Journal of Fluids Engineering, 1960,82(1):35-45.

[10] [10] VAN DER MERWE R,WAN E A. The square-root unscented Kalman filter for state and parameter-estimation[J]. Proceeding IEEE International Conference Acoustics, Speech and Signal, 2016(6):3461-3464.

          VAN DER MERWE R,WAN E A. The square-root unscented Kalman filter for state and parameter-estimation[J]. Proceeding IEEE International Conference Acoustics, Speech and Signal, 2016(6):3461-3464.

[11] [11] ANINDYA A S P,WAN E A. RSSI-based indoor localization and tracking using sigma-point Kalman smoothers[J]. IEEE Journal of Selected Topics in Signal Processing, 2018,3(5):860-873.

          ANINDYA A S P,WAN E A. RSSI-based indoor localization and tracking using sigma-point Kalman smoothers[J]. IEEE Journal of Selected Topics in Signal Processing, 2018,3(5):860-873.