Securing satellites images using Arnold map

Abstract

this research is based on encryption and decryption of satellite image while it is transmitted via communications media (private or public) the research proposed chaotic cryptography algorithms based on Arnold cat map chaotic system so Chaotic systems are a simple sub-type of nonlinear dynamical systems. They may contain very few interacting parts and these may follow very simple rules, but these systems all have a very sensitive dependence on their initial conditions the proposed algorithm is simple easy to use and efficiency in implementation so it is work in shuffle position image pixel manipulation firstly manipulate by DWT transform then use Arnold cat map algorithm for scrambling after examine this methodology by histogram analysis and adjacent autocorrelation the results of analysis is high level of security , confusion and diffusion during the entire process.