News】 【so-called pseudo-GPS satellites (Pseudo-Satellite or Pseudolite, abbreviated as PL), is laid on the ground fired a positioning signal transmitters are usually similar to the GPS signal transmitter. It is because of this reason, commonly referr

【GPS News U.S. Global Positioning System (GPS) navigation satellites are gradually modernized. GPS navigation aids from the U.S. Air Force began, and gradually developed into an important dual-use technology. The exact GPS location and timing informa

Geodynamics is a departure from the whole movement of the Earth, from Earth's interior and surface movement of tectonic evolution of its power, and then seek the drive mechanism. The basic problem is to study the Earth's deformation and deformation m

First referring to the next location technology, a more commonly used is the GPS, that is, global satellite positioning technology. There is UWB (ultrawideband, UWB) technology uses triangulation triangulation method accurately calculate the user's l

Global navigation system (GLObal NAvigation Satellite System), called GLONASS, which is a summary of the former Soviet Union in the first generation of satellite navigation systems on the basis of CICADA, absorbing part of the U.S. GPS system, the ex

One. Introduction (A) Objective evaluation The evaluation framework provides the 2006 China navigation digital map products evaluation requirements, contents, methods, standards, evaluation of this work is the fundamental basis. The purpose of this e

1. Introduction Car multimedia navigation system, is in the automotive environment, able to work independently of the multimedia systems and navigation systems. Relative to the handheld personal navigation products (PND), and performance products on

The development of mobile positioning can be traced back to the GPS applications in military, aerospace, marine, and automotive and other fields, mostly aimed at the professional use as a precise positioning and navigation, of which, automotive appli