Positioning models and systems based on digital television broadcasting signals |
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Authors: | He Feng and Wu Lenan |
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Affiliation: | (1) School of Information Science and Engineering, Southeast University, Nanjing, 210096, China |
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Abstract: | The requirement and feasibility of the positioning system using digital television (DTV) broadcasting signals are analyzed.
The principle of DTV positioning on the basis of frame synchronization is brought forward and the ranging characteristic is
studied that the observables are asynchronously measured during the same epoch interval. The models of the pseudo-range observation
and Doppler carrier phase integral are researched. The system observation and state equations are presented on the basis of
the above models. The simulation results showed that DTV positioning technology could remarkably improve the precision of
system state estimates using smoothing methods for positioning systems or integrated navigation systems. The DTV positioning
that has a sub-meter level ranging error and meter level positioning accuracy can parallel with and even taken as a beneficial
substitute for the tradition positioning technology.
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Translated from Journal of Southeast University (Natural Science Edition), 2006, 36(5): 690–694 译 自: 东南大学学报(自然科学版)] |
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Keywords: | positioning digital television (DTV) frame synchronization integrated navigation broadcasting ranging time of arrival (TOA) orthogonal frequency division multiplexing (OFDM) |
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