Pasam Malleswari , Kapalavayi Ramesh Babu. “Design and Development Of Code Acquisition And Code Tracking Module Of PN Ranging Receiver”. International Journal of Advanced Science and Technology, Vol. 29, no. 9s, May 2020, pp. 3050 -55, http://sersc.org/journals/index.php/IJAST/article/view/15812.