How can we give x,y,z as a inputs of kalman filter& how can we find out position of target?

find out the position of target based on prediction and correction of methods

[M]

Could you please provide more details ?

Have a look here: https://mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

What are x, y and z ? A kalman filter is a state estimator, it gives an estimation of unmeasured variables based on real measurements. What do you want to achieve exactly ?