Need this returned to be June 22, 2021 by 1700 Eastern Standard Time (United States)
1. A satellite mission is to launch into a direct orbit with inclination of 28.5 deg from the Kennedy Space Center, located at 28.5 deg N. How many launch windows are there in one day? 2. A. (2) (Two) B. (0), None, you can't insert into a direct orbit from KSC. C. (1) One 3. An electromagnetic (EM) source is radiating infrared emissions with a wavelength of 10 μm. What is the frequency in terahertz (1012 Hertz)? 4. A satellite is imaging directly below, from its 300 km altitude. Its sensor has a detector radius of 12 mm. For a ground image radius of 1.5 km, what is the focal length required (in meters)? 5. A satellite is imaging directly below, from its 450 km altitude. Its sensor has a detector radius of 12 mm. For a ground image radius of 1.5 km, What is the Field-of-View (FOV) of the imager (in degrees)? 6. A spacecraft is designed to have sun-facing solar panels with an efficiency of 22%. If the solar input power is 1350 W/m2, what is the expected power output of the panel per square meter? 7. A satellite is in a circular orbit at 1000 km altitude. What is the earth's angular radius viewed from the spacecraft in deg (radius of the earth disk)? 8. A spacecraft is in a circular orbit of 650 km altitude. What is the maximum duration of eclipse in minutes? 9. A satellite is in an inclined (i = 105 deg), eccentric orbit with pergiee altitude of 350 km, an apogee altitude of 15850 km. The argument of perigee is 90 deg. In 30 days, we can expect the orbit's argument of perigee to be what? 10. A. 90 deg B. Les than 90 deg C. Greater than 90 deg 10. A satellite is in an inclined (i = 105 deg), eccentric orbit with pergiee altitude of 350 km, an apogee altitude of 15850 km. The argument of perigee is 90 deg. 30 days later, the new argument of perigee value in degrees, is what? 11. A ground station is communicating with a satellite at 10 deg elevation off the horizon. Which of the following is/are true. 12. A. We can expect the signal to travel through about 11X the atmosphere compared to if the satellite were directly overhead. B. We can expect the signal to travel through about 6X the atmosphere compared to if the satellite were directly overhead. C. A 400 MHz signal, will have lower atmospheric losses compared to a 30 GHz signal. D. A 30 GHz signal, will have lower atmospheric losses compared to a 400 MHz signal. E. We'll get lower atmospheric losses with the ground station on top of a mountain. F. We'll get lower atmospheric losses with the ground station at sea level. 12. A parabolic dish is outfitted with multiple feeds at different frequencies, 800 MHz and 2.2 GHz. We can expect the transmitted signal from the 2.2 GHz feed to produce what? A. A wider beamwidth compared to the 800 MHz band signal. B. A narrower beamwidth compared to the 800 MHz band signal. C. About the same beamwidth as the 800 MHz band signal. 13. For a 15-meter diameter parabolic dish, what is the beamwidth, in degrees, for an 800 MHz signal? 14. You received a 25W radio transmitter from a vendor, and verified the power output. After routing your cable to the antenna input, you measure 24.2W at the end of the cable. What is the gain (line loss) of the antenna cable in dB? 15. A satellite's parabolic dish antenna has a beamwidth of 2 deg and is pointing directly at a ground site (GS1). The signal strength arriving at GS1 is 0 dBW. Another ground station (GS2) is located 2 deg off the boresight of the satellite's transmission. The signal arriving at this second ground site (GS2) is roughly ________ . A. Less than -3 dBW B. -3 dBW C. 3 dBW D. Greater than 3 dBW E. 0 dBW 16. A satellite is in a circular orbit with altitude of 700 km. What is the maximum slant range (0 deg elevation) in km? Blank 1. Fill in the blank, read surrounding text 17. For the maximum slant range, Rmax, in the previous question, what is the free space path loss in dB if the frequency of the transmission signal is 2.200 GHz? 18. A ground station is attempting to communicate with a spacecraft. It has a line loss of -1 dB, transmit power of 1 kW and antenna gain of 20dB. The signal is attenuated by a free space loss of -165 dB and atmospheric attenuation of -10 dB. The signal reaches the receiver which has a 15 dB antenna gain and -1 dB of line loss. What is the level of the received signal in dBW? Pt = 1 kW Llt = -1.0 dB Gt = 20 dB Lfs = -165 dB La = -10 dB Gr = 15 dB Llr = -1.0 dB