The INVISIBLE landmark system is called the predesigned pedestrian routes.
The changing characteristics and combinations of various sensors’ data in smartphones or navigation devices can be viewed as invisible salient landmarks for business card route of pedestrian navigation.
Typically, however, only a few sensors in smartphones or navigation devices are used to contribute to localization or navigation, such as Wi-Fi-based positioning and its Kalman filter-based error smoothing, Bluetooth inquires, GPS, accelerometers, and drift compensation algorithm with invisible landmarks.
The invisible landmark-based pedestrian locating approach based on the D-S theory of evidence is a useful guide to allow newcomers to follow predesigned business card routes.
Therefore, the correct answer is as given above
learn more about landmark system: https://brainly.com/question/12588477
#SPJ1
