FRAUDetect (United States)

Chatting application is an application which used for communication through local network or internet. It can use to make communication to be effective and easy to use but there are several shortage in delivery information process is data security when communication is going on. Using chrypthography with modification Rivest Shamir adleman (RSA) algorithm in encryption process and decryption on packet data which transmited is one of security system which can used in this application then the security of data packet secured. Result from implementation of chatting application which apply chrypthography with modification Rivest Shamir adleman (RSA) algorithm have done in local network and internet able to run smoothly and have done by several testing cases based on certain scenario. Whereas process testing encryption and decryption using tools wireshark.

This paper presents an approach to target detection using discrete Fourier transform (DFT) processing and a stepped frequency waveform. The approach utilizes an advanced mathematical two-way signal model to separate the non-linearity associated with the target returns. This model is based on a three dimensional third-order Taylor series expansion of the round trip delay about incremental azimuth, elevation and time. Once a range bin is established, proper time sampling removes the signal's time dependency. Thus, the two-way phase is proportional to azimuth and elevation increments. Detection is achieved on the basis of target's range, azimuth and elevation angels. Elevation (vertical strip) and azimuth (horizontal strip) profiles of the target's plane are synthesized through a two-dimensional DFT.