Results and Findings Optimization of the Acid Catalyst Concentration for Synthesis of Anti‐Cancer Agent Gamavuton‐0 by Using Mathematical and Statistical Software

17 Acknowledgements This work is funded by the Minister of igher Education Malaysia MOE under account no .PJJAU. , and Japanese nternational Cooperation Agency JCA . References Barton D. K. 88 , Modern Radar System Analysis, Norwood, Artech ouse. Chan Y. K., Koo V. C. 8 , An ntroduction to Synthetic Aperture Radar SAR , Progress in Electromagnetics Research B, Vol. , pp. ‐ . Chan Y. K., Lim S. Y. 8 , Synthetic Aperture Radar SAR Signal Generation, Progress in Electromagnetics Research B, Vol. , pp., ‐ . Chua M. Y., Koo V. C. , FPGA‐based Chirp Generator for igh Resolution UAV SAR”, PER , pp ‐88.
 Chua M.Y., Boey .S., Lim C.., Koo V.C., Lim .S., Chan Y.K., Lim T. S. , A Miniature Real‐ Time Re‐configurable Radar Waveform Synthesizer for UAV based Radar”, PERC , Vol. , pp. ‐ 8 , . Mahafza B. F. 8 , ntroduction to Radar Analysis, New York, CRC Press. Skolnik M. . , Radar andbook, New York, McGraw‐ill. Ulaby F. T., Moore R. K., and Fung A. K. 8 , Microwave Remote Sensing: Active and Passive, Vol. , Norwood, Artech ouse. Joint Scientific Symposium IJJSS 2016 Chiba, 20‐24 November 2016 18 Topic : Co puter and Infor ation Technology NETWORK BASED DATA ACQUISITION AND CONTROL SYSTEM FOR CIRCULAR POLARISATION SAR CP‐SAR SENSOR ON UAV Agus Hendra Wahyudi, Josaphat Tetuko S. Sumantyo, Heein Yang, Matsumura Kohei, Yuta Izumi. Josaphat Microwave Remote Sensing Laboratory, Center for Environmental Remote Sensing, Graduate School of Advance Integration Science, Chiba University,1‐33, Yayoi, Inage,Chiba, 263‐8522, Japan Abstract igh resolution C band CP‐SAR sensor has been developing for natural disaster and earth monitoring using UAV platform in JMRSL. This paper will describe one method of data acquisition system using fast Ethernet interface for continuous operation during UAV’s flight. Graphical user interface was made using visual c to allow operator to control and monitor SAR system and operation. ardware in the loop for low altitude flight operation has been done and discussed for ensuring system working well before real flight test. Transfer rate less than of PR can be achieved in this low altitude operation particularly meter, cruise speed kmh and PRF chosen value. That result show the gigabit network based data acquisition provide good transfer rate for continuous CP‐ SAR sensor data logging and allow the user to change SAR sensor operation and parameter remotely. Keywords Keywords: UAV,network, data acquisition, CP‐SAR

1. INTRODUCTION

Earth surface monitoring by UAV has been increased in recent years. t can give local area data information for fast response such as on natural disaster monitoring and decision support system on disaster area Li et al. , Fikar et al. . Optical sensor was common passive sensor utilized on UAV. owever, it can not operate on night and bad weather. On the other hand SAR sensor was active sensor that can give data day night and all weather therefore many platform use this technique for earth observation such as ground based, spacecraft, airborne and UAV Bayuaji et al. . Conventional SAR sensor utilized linear polarizasation while a novel methode will be performed in this research is circular polarization SAR sensor. The benefit of using circular polarization is polarization loss factor robustness due to mismatch polarization 19 usually in LP case when some disturbance in UAV flight path happened. Thus, better detection of target will be more reliable. n addition, CP SAR sensor on spacecraft will be more robust than LP‐SAR due to faraday rotation that will make polarization mismacth increase in LP freeman and S.Saachi, . One of SAR image quality is represented by resolution number, which is depent on the bandwidth of signal called chirp. n order to get sub‐meter high range resolution on C Band SAR image we implemented Mz chirp bandwidth. Backscattered signal from earth surface will be sampled with high sampling ADC and saved to hard disc computer for image processing, therefore this system requires fast transfer data rate such as network gigabit Ethernet interface. Network based data acquisition and control allow UAV CP SAR researcher to control gain of RF system and configure PRF, bandwidth of chirp signal and store data continuously during SAR flight UAV operation. The system will be described in this paper and hardware in the loop experimental set up will be presented for ensuring functional system work well before flight test.

2. SAR DATA ACQUISITION SYSTEM

SAR data acquisition system is a methode to collect a SAR raw data. t contain RF system, Antenna sensor, embedded system and graphical user interface in laptoppc for control SAR parameter and display data.

2.1 Block Diagram of SAR System

Block diagram C band CP‐SAR system can be shown in figure . Figure . Block Diagram C Band SAR System Embedded system will produce chirp signal Mz. ADDA from analog devices connected to fpga through igh speed FMC card provide high sampling . GSPS for DAC and GSPS for ADC. Fpga system board KCU has GB DDR Ram for fifo buffer and Q data from ADC. t also has gigabit ethernet port communication to transfer data to hardisk PCLaptop for further analysis. RF system transmitter and receiver have TCPP communication port for configuration such as SSPA gain control transmitter , gain offset and phase sifter. The transmitter contain baseband unit to combine signal from DAC inphase and quadrature with F local oscillator, upconverter unit to convert F signal to C band RF , Gz, and SSPA unit for amplify the signal and pass them through antenna. RF system receiver contains LNA and Down‐converter to provide baseband n‐phase and Quadrature signal for ADC analog input.