---
# System prepended metadata

title: HW07
tags: [Satellite Electrical, ' ss', ' ncu']

---

---
tags: Satellite Electrical, ss, ncu
author: N0-Ball
title: HW07
GA: UA-208228992-1
---

# Problem

![](https://i.imgur.com/eC89eGx.jpg)

# Ans

Effective Distance = $-6378 \times \sin \left( 10^ \circ \right) + \sqrt{\left( 6378 \times \sin \left(10 ^ \circ \right) \right)^2 + 600^2 + 2 \times 6378 \times 600} \approx 1932.24$ km

## Linked Budget



| Item                  | Equation                                                                                                         | Value   |
| --------------------- |:---------------------------------------------------------------------------------------------------------------- |:------- |
| Transmitter Power     | x                                                                                                                | Target    |
| Antenna Gain          | x                                                                                                                | -6      |
| Transmissinon Loss    | x                                                                                                                | -0.1    |
| Tx Impedance mismatch | x                                                                                                                | -0.5    |
| Path Loss             | $\left(\frac{4 \pi r}{\lambda} \right) ^2$                                                                       | -150.97 |
| Atmospheric Loss      | $d \times 0.001 \left[ 0.00719 + \frac{6.09}{f^2 +. 0.227} + \frac{4.18}{\left( f - 57 \right)^2 + 1.50}\right]$ | -1.6    |
| Polarization Loss     | x                                                                                                                | -3      |
| Antenna Gain          | x                                                                                                                | 18.95   |
| Unpointing Loss       | x                                                                                                                | -1      |
| Rx Impedance mismatch | x                                                                                                                | -0.51   |
| Noise                 | kTB                                                                                                              | 163.77  |
| SNR minimum           | x                                                                                                                | -10     |
| Margin                |                                                                                                                  | -6      |
|                       |                                                                                                                  |         |
| Total                 |                                                                                                                  | 3.04   |


$0 - 3.04 \text{dbW} \approx \underline{0.497 \text{W}}$
