Concept explainers
A remote sensing satellite is in circular orbit around Earth at an altitude of 1,100 km above Earth’s surface. What is its orbital period?
The orbital period.
Answer to Problem 1P
The orbital period is
Explanation of Solution
Given data:
The altitude of satellite from Earth’s surface is
Calculation:
The orbit radius
Here,
Substitute
The conversion of
Hence, the conversion of
The orbital period
Here,
Substitute
The conversion of
Hence, the conversion of
Conclusion:
Therefore, the orbital period is
Want to see more full solutions like this?
Chapter 10 Solutions
Fundamentals of Applied Electromagnetics (7th Edition)
- 2.94. A communication satellite is in stationary (synchronous) orbit about the earth (assume altitude of 22,300 statute miles). Its transmitter generates 8.0 W. Assume the transmit- ting antenna is isotropic. Its signal is received by the 210-ft diameter tracking paraboloidal antenna on the earth at the NASA tracking station at Goldstone, California. Also assume no resistive losses in either antenna, perfect polarization match, and perfect impedance match at both antennas. At a frequency of 2 GHz, determine the: (a) power density (in watts/m²) incident on the receiving antenna. (b) power received by the ground-based antenna whose gain is 60 dB.arrow_forward1-When is the antenna sending and receiving at the same time 2-When do we get circular polarizationarrow_forwardThe characteristics of MEO orbit are: Tick all that apply. Large footprint each satellite cover around 33% of earth. Inclined orbit altitude from 5000 to 1800 km. O Orbit period of 6 days. O Diameter of coverage is 10000 to 15000 km. O Orbit period of 6 hours. Equatorial orbit at altitude of 36,000 km. O Orbit period of 6 months. The slowest orbit. O Appears stationary to an observer. Polar orbit altitude from 500 to 1500 km.arrow_forward
- The following question is from the attitude dynamics course. Please indicate an estimation of the maximum error of the attitude error in gyroscopic navigation caused by the angular rate measurement noise after 4 hrs, if the ARW is 0.3 deg/ sqrt(t). Thanksarrow_forwardCalculate the Earth’s curvature between two microwave antennas with a path distance of 10 miles. Assume that the equivalent earth’s radius factor is 1.33 13.31.3312.518.0arrow_forwardConsider a communications satellite that orbits the Earth at a height of about 40,000 km. At this height the orbit period is 24 h, so that it seems to hang motionless above the Earth, which turns underneath the satellite once every 24 h. This is called a "synchronous" satellite. The advantage of such an arrangement is that receiving antennas on the ground can point at a seemingly fixed location of the satellite in the sky and not have to be steered. You have probably seen such fixed receiving antennas pointed at the sky. If the broadcasting antenna on the satellite is 2 m in diameter and broadcasts at a frequency of 10 GHz (f= 10 × 109 Hz), approximately what is the diameter of the region on the ground where the satellite transmission can be picked up?arrow_forward
- 2.) A short vertical transmitting antenna erected on the surface of a perfectly conducting earth produce an rms field strength E = 100 sine mV/m at a distance of 0.5 km from the antenna. Determine the total radiated power by the antenna.arrow_forwardCalculate the Earth’s curvature between two microwave antennas with a path distance of 10 miles. Assume that the equivalent earth’s radius factor is 1.33. Group of answer choices 1.33 12.5 18.0 13.3arrow_forward6) Perform the following computations: a) (0.3/0°) + (3Z180°) b) (5Z-45°) + (-4220°) c) (0.05295°) – (0.04Z–20°) а) b) c)arrow_forward
- Suppose NASA wants to move a malfunctioning spacecraft from a circular orbit at 450 km altitude to one at 150 km altitude, so a Shuttle crew can repair it. What is the time (TOF) required for the transfer?arrow_forwardQuasi-static electromagnetic field is the . none of the above time independent high frequency low frequency if the maximum dimension of an antenna is 0.15 m and the frequency is 1 GHz the distance 0.5 m represents. Fresnel field near field O Far fieldarrow_forwardQuèstion 3 Separation between the two charges in dipole moment is very large None very small not small or large O Oarrow_forward
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
- Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill EducationElectric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSONEngineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,