Question 1 A UAV mission is designed for a land survey over an area of 4 km2. The mission is to be performed with a UAV at a nominal cruise speed of 30 to 45 Knots and a nominal cruise altitude of 300 to 1400 feet. The UAV is equipped with an electro-optical camera payload. The camera FoV is 2 degrees. Flight time must not exceed 2 hours. a. Propose and justify a mission design (Flight plan, altitude, speed of operation) to explore the designated area in minimum or near minimum time. Comment on the advantages and disadvantages of exploring the area in minimum time. In answering this question, explain your reasoning. b. Propose a control system design (block diagrams, navigation methods and controllers) to ensure that the desired path is tracked (at constant altitude) with prescribed path tracking accuracy and energy consumption. Assume that the control surfaces are servo controlled and that navigation combines radar altimetry with inertial navigation and GPS. c. Lateral control required a roll autopilot. Design a block diagram for a roll autopilot. Ixx=2 kgm2 and the rolling moment derivatives are Lp= -0.2, L=0.1. Design a linear controller for the roll angle using aileron deflection inputs and perform numerical simulations to ensure that the roll angle is successfully controlled. Question 2 The data handling system is designed to ensure that the electro-optic instrument must download all images covering the 4 Km2 area at 0.5 meter resolution in 1 minute over a ground station. a. Determine the required imaging data rate for the downlink and comment on its feasibility. Calculate the required bandwidth. Propose a frequency band for this application. Explain how the Mil-std-1553 can be used to transmit data from a sensor to the onboard computer. Would the use of Mil-std-1553 be justified in this case? b. The radar altimeter is used to estimate UAV altitude. Calculate the radar footprint for the radar altimeter to achieve 5 feet accuracy at 1400 feet altitude. How is the radar footprint related to radar signal power. c. The only radar system used on this UAV is a radar altimeter. Review the current methods for radar and optical navigation based sense and avoid. Select one of the obstacle avoidance methods reviewed in the literature and explain its advantages. Explain how this method can be used to achieve obstacle avoidance with keep out zones. Assume the potential obstacles are other UAVs flying in formation with the UAV under consideration.