Discussions Remarks Optimization of the Acid Catalyst Concentration for Synthesis of Anti‐Cancer Agent Gamavuton‐0 by Using Mathematical and Statistical Software
1. Introduction
Synthetic Aperture Radar SAR is well‐known as a multi‐purpose sensor that can be operated in all‐weather and day‐night time. As our laboratory roadmap for microsatellite, aircraft, and unmanned aerial vehicle development refer Fig. , our laboratory develops SAR, especially Circularly Polarized Synthetic Aperture Radar or Elliptically Polarized Synthetic Aperture Radar CP‐SAR or EP‐SAR, Patent Pending ‐ to monitor global land deformation. The sensor is designed to transmit and receive left‐handed circular polarization LCP and right‐handed circular polarization RCP , see Fig. . For this purpose, we also develop unmanned aerial vehicle UAV for ground experiment of this sensor Sri Sumantyo , see Fig. and Fig. . The main mission of CP‐SAR is to hold the basic research on elliptically polarized scattering and its application developments. n the basic research, we will investigate the elliptical including circular and linear polarizations scattering wave from the land surface, generation of axial ratio image AR , ellipticity and tilted angle images etc. We will hold the analysis and experiment of circularly polarized wave scattering on vegetation, snow, ice, soil, rock, sand, grass etc to investigate the elliptical scattering wave. These images will be extracted by using the received RCP and LCP wave. CP‐SAR sensor transmits only one polarization, RCP or LCP, then this sensor will receive RCP and LCP scattering waves simultaneously. The image is employed to investigate the relationship between the physical characteristics of vegetation, soils, snow etc. The image of tilted angle as the response of land surface also will be extracted to mapping the physical information of the surface, i.e. geological matters etc. Fig. . Roadmap of Chiba University Microsatellite A L Band CP‐SAR for UAV and Aircraft B C X Bands CP‐SAR system for Boeing ‐ C Antenna for CP‐SAR onboard Boeing ‐ Fig. . Circularly Polarized Synthetic Aperture Radar CP‐SAR onboard Boeing ‐ Fig. . Flight test of CP‐SAR onboard UAV Fig. . The nd Josaphat Laboratory JX‐ at Fujikawa Airport, Japan on Experimental Unmanned Aerial Vehicle JX‐ August . for microwave sensor ground test n application development, CP‐SAR sensor will be implemented for land cover mapping, disaster monitoring, Cryosphere monitoring, oceanographic monitoring etc. Especially, land cover mapping will classify the forest and non‐forest area, estimation of tree trunk height, mangrove area monitoring, Arctic and Antarctic environment monitoring etc. n disaster monitoring, CP‐SAR sensor will be employed for monitoring of earthquake area, volcano activity, landslide etc. This paper introduces progress on development of our SAR onboard Boeing ‐ aircraft and microsatellite.2. CP‐SAR Onboard Aircraft
The CP‐SAR onboard Aircraft Fig. is mainly composed by Flight Control System, Telemetry and Command Data andling, Attitude Controller, and Sensors. Attitude Controller is composed by nertial Measurement Unit MU and GPS units. Sensors are composed by CP‐SAR as main mission sensor, and other sensors. CP‐SAR sub‐system itself is composed by chirp pulse generator module, Transmitter and Receiver Tx‐Rx module, and mage Signal Processing module. Ground control segment was used for CP‐SAR sensor monitoring and image processing. The CP‐SAR system is composed by transmitter and receiver sub modules. The input of transmitter is n‐phase and Quadrature Q signal of chirp pulse generated by pulse generator with baseband range is DC to Mz normally Mz , Mz, and 8 Mz for L, C and X band, respectively. Then chirp RF System RX Ant TX Ant SAR Processor CP‐SAR System TX Ant RX Ant Fig. . Aircraft onboard CP‐SAR System Fig. . Microsatellite CP‐SAR Fig. . Deployment experiment of meshed parabolic antenna pulse is modulated by frequency , Mz, , Mz, and . Mz, respectively. The transmission system has gain tuning function as , , , 8, dB or to ‐ dB, and receiver has gain tuning function as , , , 8 and x or to ‐ dB. Power amplifier PA is available to control pulse transmission output power W, W and W respectively with pulse width maximum s, and maximum duty circle is . The switching speed of transmission and receiver system antennas RCP and LCP is typically s and maximum s. The antenna is composed by two sets of CP microstrip array antenna LCP and RCP panels , totally panels to realize full polarimetric CP‐ SAR sensor. We could control the pulse length and bandwidth of chirp pulse, and save data to SSD memory. n this research, the CP‐SAR onboard unmanned aerial vehicle CP‐SAR UAV, Fig. and is developed for ground testing of CP‐SAR and other sensors. The platform called Josaphat Laboratory Experimental UAV JX‐ and JX‐ has kg of payload. The operation altitude is , m to , m. The specification of CP‐SAR sensor for UAV is frequency of L, C and X bands, ground resolution up to m, pulse length could be tuned from . to 8 s, off nadir angle o to o, swath width km, panels of antenna, and PRF , ~ , z. We held ground experiment with altitude less than km with pulse transmission output power W for L band, km with output power W for C band, and km with output power W for X band, respectively. The data retrieved by LCP and RCP antenna Yohandri is employed to investigate the characteristics of elliptical polarization, including circular and linear polarizations. n the future, further investigation of characteristics of circular polarization will be done by using Boeing ‐ aircraft. Fig. 8. Modules of Microsatellite CP‐SAR Fig. . Power network of CP‐SAR microsatellite Fig. . Ground test of CP‐SAR system for UAV Robot CP‐SAR Corner ReflectorParts
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