Airborne Insar System Video Data Acquisition Principles, Methods, And Its Implementation

This thesis demonstrates the system data collecting system of airborne InSAR, especially the analog-to-digital converter (A/D) subsystem of the integration information processing system (IIP). Based on the development of the system data collecting system, the airborne InSAR system is designed and experimented .First , the thesis describes the theory and the mode of the InSAR , including the process of the signal processing of interferometric synthetic aperture radar . Based on the theory of InSAR ,this thesis expounds the system of InSAR. Because that there are two channels , 4 IQ data which are needed to collected, the system require high speed A/D, and high speed data storage.For achieving these targets, the thesis study the A/D subsystem of the integration information processing system, including hardware and software of these systems . To develop the software of the integration information processing system, the thesis study the RTOS VxWorks .After these chapters , the thesis gives the methods to run the IIP .especially the A/D subsystem under the requirement .In the end , via many experiments , especially the experiment of the airborne SAR XTI , the IIP system , including the A/D subsystem was validated .With the development of airborne SAR, especially the deep research of high resolution and InSAR, it is very necessary for airborne SAR to use the information of precise 3D position, velocity, acceleration and attitude for motion compensation. And all data need precise synchronization. High precision dynamic GPS can supply the information well. So high precision dynamic GPS becomes one of the important department of airborne new pattern SAR. The thesis spent a chapter todiscusse the application of high precision dynamic GPS in the Advanced airborne InSAR .The research of the data collecting system of airborne InSAR is useful to the practical development of the airborne InSAR. These are some suggestions of the development of data collecting system of airborne InSAR in the future in the last chapter .