Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question:
(a) A HF digital radio data link operates over a distance of 1000 km. Depending on transmission frequency, reflection can occur from the F2 region of the ionosphere at a virtual height of 320 km where the electron density is 1.3 x 1012 el/m3 and from the E region at a virtual height of 110 km where the electron density is 1.2 x 1011el/m3.
(i) What is the Maximum Usable Frequency (MUF) for the path? (ii) Over what transmission frequency range will there only be an F2 region reflected path? (iii) When both E and F region reflected paths occur together, estimate the maximum advisable bit rate by determining the difference in time delay between the two paths.
(b) Ionospheric propagation delay introduces errors in range-finding by satellite navigation systems such as GPS. Determine the extra time delay (compared with free space propagation) and hence, the range error at the GPS frequency 1227.6 MHz for a path through the ionosphere at an angle of 70o to the vertical. The electron density of the ionosphere is given by a constant 3 x 1011el/m3 from 200 to 400 km height and zero elsewhere and the velocity c is 299,792,458 m/s.
QUESTION 1 (a) Write short notes on the following terms and provide examples where appropriate? I. Rural tourism II. Urban Tourism III. Ecotourism IV. Culture touri
Supplies The supplier is responsible for the delivery of goods/services that are ordered/contracted to him as per the order. However, purchaser has to ensure the goods are del
In 2000, various instances were reported in which Ford owners with Firestone tyres were experiencing tyre blowouts ultimately causing around 150 deaths and over 500 serious injuri
The study of the structure and development of the UoS by the information professional can be shown to be a necessary implication of the five laws of library science. Law 1 And I
Links in InformationTransmission Chain: i) Sources of Generation: As discussed in Unit 1, the researchers and their employing oreganisations are responsible for generating in
Question 1 How is the public relations industry organized? Question 2 How are newspapers registered? Explain in detail Question 3 Write a long note on the Structure of E
QUESTION 1 Caring for differences in Early Childhood Centres has become very important. Briefly explain why QUESTION 2 Briefly describe why planning is important even i
discuss merits and demerits of common property regimes and open access property regimes
P lanning for Quality All projects have specific measurable objectives and goals to achieve. Planning quality is the first step which systematically translates the obj
Question 1: (i) Explain why it is not normally advisable to use the cost plus method in the pricing of rooms for first class hotels. (ii) Mention and explain four types of
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd