Watanabe S, Okada M. Hardware Evaluations of Simple Radio Positioning System Based on Direct Sequence Spread Spectrum. ECTI-CIT Transactions [Internet]. 2016 Apr. 7 [cited 2024 May 3];9(2):93-100. Available from: https://ph01.tci-thaijo.org/index.php/ecticit/article/view/54412