作者: John Russell Wilbur
DOI:
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摘要: A software application installed on a mobile device periodically measures parameter and records it along with the position associated measurement. These data are recorded device's internal memory displayed in form of map so that users can navigate to locations desired levels. In one embodiment, this may be cellular signal strength, allowing areas no useable find location where phone call placed. Parameter as they acquired or other embodiments preloaded onto device, for example strength maps even when has current connection.