
 Applications of Kalman filter in WAAS (Site not responding. Last check: ) 
  The Kalman filter being a multiinput, multioutput, recursive digital filter that produces estimates of states of a system, which are optimal in the mean square sense, finds application in two ways in GPS based navigation systems like WAAS. 
  The Kalman filter is a multiinput, multioutput, recursive digital filter that can optimally estimate, in real time, the states of the system based on its noisy outputs. 
  A brief approach of using the Kalman filter for estimation of TEC and synchronization of the atomic clocks at the RIMS is given below. 
 www.gisdevelopment.net /technology/gps/techgp0033.htm (405 words) 
