With more and more new mobile devices (such as mobile phones, tablets, and wearable devices) entering peopleâ??s daily life, along\nwith the application and development of relevant technologies based on usersâ?? location information, location based service is\nbecoming a basic service demand of peopleâ??s life. This paper puts forward a research on location technology based on frequency\nmodulation band digital audio broadcasting (FMChina Digital Radio, FM-CDR).A newmethod of adding timestamp information\nto the FM-CDR frame structure is proposed, which verified that the change to the system does not affect the normal transmission\nand reception of broadcast content under the original standards and can accurately extract the recognition signal and timing\ninformation of BS. In the complex environment, the estimation algorithm of signal parameters such as received signal strength\n(RSS), time of arrival (TOA), and time difference of arrival (TDOA) of terrestrial radio broadcast signals is studied. In this paper, a\nnew method based on multisource data fusion is proposed, which can meet the need of localization in various environments and\novercome the deficiency of single localization method.
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