An Innovative Navigation Algorithm Using a System of Fixed Pseudolites

An innovative navigation algorithm, which utilizes a system of fixed pseudolites is derived, analyzed, discussed, and simulated in this paper. Although this algorithm uses the same Doppler measurements as a conventional least square algorithm LSA (which produces user velocity and ION NTM 2001, 22-24 January 2001, Long Beach, CA 61 user clock drift) or Kalman based filter (which obtains user position/velocity etc.), in essence the Doppler measurements are applied differently and therefore this is the reason why this is an innovative algorithm. The solution accuracy obtained using this algorithm is compared with solution accuracy from the conventional pseudorange LSA. The result of this comparison is also presented in the paper. We will desire to present live test results if they are available at the time of presentation. Introduction The Doppler effect, also known as the Doppler shift, is a fundamental concept in astronomy, physics and navigation science [1-3]. In the 1920s, astronomers found something most peculiar about the spectra of stars of distant galaxies [1]. Their spectra were shifted by a constant amount in the red spectrum compared with the spectra of stars of our galaxy. Of course, this implication can be explained easily with the Doppler effect [1], which is the relationship between the signal frequency and the speed of the transmitting and/or receiving device. When the Doppler effect was neglected, scientists led to erroneous conclusions in early optical physics' conclusions (The experiment of Einstein and Rupp) that were not supported by classical mechanics [2]. In navigation science, during the investigation of Transit system, the Doppler shift data were recorded at one site during a single pass of the Sputnik 1 to determine its entire orbit [3],