UWB indoor TDOA/AOA location algorithm based on wavelet denoising

Non Line of Sight (NLOS) error exists in indoor wireless location environment, and NLOS error is a class of background noise. Wavelet analysis has a good de-noising, so it can be used to e-liminate NLOS error based on the traditional indoor and TDOA/AOA location algorithm so that TDOA/AOA algorithm was optimized, IEEE 802.15.4a UWB channel model, with good penetrability, is adopted. The simulation results show that the new algorithm has more higher positioning accuracy, compared with Chan algorithm and TDOA/AOA algorithm.