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The strength of the GPS signal on the earth's surface averages-160 dBw. While many GPS receivers leave large space for signal dynamics, enough power space is left for the GPS signals to be spoofed. Spoofing is completely different from jamming. The objective of jamming is to simply interrupt the availability of the signal in space at the receiver. The effect is to cause the signal at the receiver...
The ionospheric total electron content (TEC) is an important ionospheric parameters, Research of it has important significance on communication, radar, spaceflight, GNSS and other domains. Traditional short-term forecast model of ionospheric TEC uses single model so as to affects the prediction precision. A combination model based on seasonal model and ARMA model was put forward to overcome the shortages...
Map Matching (MM) is an important part of Intelligent Transportation System (ITS). GPS fusing electronic map model is frequently used for vehicle navigation application. While most of the existing solutions fail to provide trustworthy trajectory when the situation is ambiguous (U-turn, road intersections …). Azimuth Angle of GPS point (AZP) started to be utilized as a new feature in Map Matching....
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