… hyperbolic range equation (CHRE) becomes questionable. A fourth-order range equation
is adopted to improve the accuracy in the approximation of the range history for GEO SAR and …

… range model (DRM), to perform signal processing for geosynchronous synthetic aperture
radar (GeoSAR). … In Leo-SAR case, the range equation is close to a hyperbola with some …

… range equation (CHRE) are not proper for GEO SAR directly. Thus, we tentatively aim to
present an advanced range equation in … range equation has been suggested for the GEO SAR …

… Unlike LEO SAR and airborne SAR, the velocity of GEO SAR satellite is quite different in the
Earth-… However, Equation (1) is inaccurate for GEO SAR because of the complicated space …

… GEO SAR is proposed. This method mainly solves the following two problems: 1) Existing
loworder Taylor expansion range … Bring the approximate propagation time into equation (11), …

… range model is not verified by the real slant range … equation of GEO SAR and gives an
equivalent slant range model. Then, the dichotomy method is applied to obtain the real slant range…

… Therefore, by solving the abovementioned equation system, we can obtain the equivalent
… Yin, “A 2-D nonlinear chirp scaling algorithm for high squint GEO SAR imaging based on …

… imaging algorithm performs well over the expected range of applicability for GEO SAR. …
Equation (50) shows the relationship between the range variation and fast time t in a single pulse. …

… of the GEO SAR by using the high order range model based on the characters of the GEO
SAR … The range equation (4) can compensate the actual range history up to the quartic term, …

… in the GEO SAR system, the range history changes of the targets with the same slant range
in the … Similarly, the range equation is approximated to a parabola by referring to the classical …