This chapter has provided a brief introduction to radiolocation techniques for wireless systems. Several methods were discussed which provide the location parameters for the signal strength, AoA and time-based location methods. A multitude of AoA methods exist in the literature. Conventional methods for ToA and TDoA estimation rely on correlation techniques. Both geometric and statistical location algorithms were developed and discussed. The statistical methods are more appropriate for cases when there are considerable measurement errors of the location parameters or when the system is overdetermined. The method of LS appears to be the most popular form of TDoA estimator. Finally, a few measures of the location accuracy of a system were presented including the CRLB, CEP and GDOP.