抄録
This paper introduces a new application of a passive radar system using a GPS satellite.Radar is a system which uses reflection signals in order to detect and pursue targets. Passive radar makes use of reflection signals such as commercial broadcasts and communications signals to detect targets and to estimate parameters. However, passive radar systems are not always designed to detect and process the echoes from targets illuminated by transmitters. The system would lose the availability if the receivers couldn't detect these signals.We are concerned with the estimation method for a target position by one echo from a target illuminated by a GPS satellite. When we could receive a reflection signal from a GPS satellite we can use constraint conditions which are the relative delay between a direct signal and reflection signals and the rate of change of phase differences. We can obtain the reflection position by solving simultaneous equations. The equations are presented as the equation relating the relative delay between a direct signal and reflection signals, and the equation relating differential of relative delay.In this paper, we describe proposed method under the assumption that the target is a vertical plane. In addition, we apply proposed method to observation data and evaluate the availability of proposed method.
