Pioneer CNDV-50MTP Operation Manual - Page 63

the built-in DVD player to play a DVD-Video or CD when using the NAVI Source, the operation but- tons are displayed on the screen and a few lim- ited operations can be performed. q e The accuracy of the GPS information depends on how good the reception is. When the signals are strong and reception is good, GPS can determine latitude, longitude, and altitude for accurate positioning in three dimensions. But if signal quality is poor, only two dimensions, latitude and longitude, can be obtained and positioning errors are somewhat greater. Appendix w r (e.g. When AVH-P5700DVD is connected) q Switching the source w During DVD playback : Forwarding/ rewinding the chapter. During CD playback : Forwarding/rewinding the track. e For future use. r Canceling the operation buttons. Cautions when connecting a Rear Display to the Front Display The map screen navigation images output to the rear display differ from standard NTSC format images. Therefore, their quality will be inferior to the images that appear on the front display. ➲ Switching the rear display ➞ the manual for the display you are combining. Positioning Technology The Navigation System accurately measures your current location by combining the positioning by GPS and by Dead Reckoning. Positioning by GPS The Global Positioning System (GPS) uses a network of satellites orbiting the Earth. Each of the satellites, which orbit at a height of 68,900,000 feet (21,000 km), continually broadcasts radio signals giving time and position information. This ensures that signals from at least three can be picked up from any open area on the earth's surface. Positioning by dead reckoning The 3D Hybrid Sensor in the main unit also calculates your position. The current location is measured by detecting driving distance with the speed pulse, the turning direction with the Gyrosensor, and inclination of the road with the G sensor. The 3D Hybrid Sensor can even calculate changes of altitude, and corrects for discrepancies in the distance traveled caused by driving along winding roads or up slopes. Also, the Navigation System learns the driving conditions and stores information in the memory; thus, as you drive more, the precision of the positioning becomes more accurate. The method of positioning changes as follows depending on whether the speed pulse of your vehicle is detected or not: 3D hybrid mode This is active when the speed pulse is detected. Inclination of a road can be detected. 61