6. TRANSMITTING ANTENNA 6. 1 Aperture Illumination and Size 6-1 6.2 Array Types 6-10 6. 3 Subarray Types 6-16 6.4 Subarray Dimensions 6-16 6. 5 Subarray Layout 6-20 6. 6 Tolerance and Attenuation 6-26 6. 6. 1 Frequency Tolerance 6-26 6.6.2 Waveguide Dimensional Tolerances 6-27 6.6*3 Waveguide Attenuation 6-28 6. 7 Mechanical Design and Analysis 6-29 6. 7. 1 Thermal Analysis and Configuration 6-29 6. 7C 2 Materials 6-38 6. 7. 3 Transportation, Assembly and Packaging 6-43 6. 8 Attitude Control and Alignment 6-47 6.9 Conclusions and Recommendations 6-49 7. PHASE FRONT CONTROL 7. 1 Adaptive Phase Front Control 7-4 7.2 Command Phase Front Control 7-10 7. 2. 1 Phase Estimation 7- 10 7.2.2 Bit Wiggle 7-14 7.3 Conclusions and Recommendations 7-14 APPENDIX A - RADIO WAVE DIFFRACTION BY RANDOM IONOSPHERIC IRREGULARITIES A. 1 Introduction A-1 A. 2 Model for Electron Density Irregularities A-2 A. 3 Phase Fluctuations and Their Spatial Correlation at the Diffracting Screen A-3 A, 4 Phase and Amplitude Fluctuations and Their Spatial and Temporal Correlation Functions on an Observational Plane A-4
RkJQdWJsaXNoZXIy MTU5NjU0Mg==