Uplink and Downlink antenna sizes. Planned data or information rate. This assumes that the total power is more or less evenly divided according to bandwidth. If they were propagating in another medium this calculator would not give the correct result. Link budget calculations There are two types of link budget calculations since there are two links namely, uplink and downlink. When these gains and losses of various components are determined and summed, the result is an estimation of end-to-end system performance in the real world.
Additional consideration when designing the satellite is its height. This leads to pages with pre-calculated satellite link budgets with useful default parameters inserted which may be amended and then recalculated. Because of limitations in power required for transmitting and gain of the antenna. This value is usually calculated by discounting any obsticles or reflections that might occour. I hope you find the information useful, and welcome your comments and suggestions. This will generally provide a link availability in excess of 99.
The unit of power is decibel. When you download the spreadsheet, you will see a lot of worksheets with particular functions. Satellite transponder output backoff or attenuation. Negative value means that the position is south of the equator. Satellite link budget calculator below is an excel template to help satellite engineers calculating performance in terms of signal values based on particular antenna size, power requirements and many other factors.
Can be entered with decimals. Satre Misc 1911-1999 Jens T. Antenna Gain The gain of practical antenna is defined as the ratio of maximum power flux density of practical antenna and power flux density of isotropic antenna. Many different online satellite calculators can be found here, including a link budget calculator. Prepare to spend some time interpolating terrestrial microwave data into your satellite application.
Once you understand what is going on, you can plug in the variables required in your own network applications. Calculation of relation between Noise figure in dB and Noise temperature in degrees Kelvin. Please register to receive the calculator. It has many antenna that pointing toward the earth. Calculation of the antenna gain in dB.