1 / 16

Calculator functions

Calculator functions. Calculator functions in WRAP. Different calculation functions in different dialogues Geographical calculations General radio calculations Minimum separation calculations Transmitter, receiver and antenna calculations. Geographical calculations.

linnea
Download Presentation

Calculator functions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Calculator functions WRAP 0966B

  2. Calculator functions in WRAP • Different calculation functions in different dialogues • Geographical calculations • General radio calculations • Minimum separation calculations • Transmitter, receiver and antenna calculations WRAP 0966B

  3. Geographical calculations • Conversion of co-ordinates between geographical datums • Distance and bearing between two points • Free space loss between two points • Roughness WRAP 0966B

  4. Geographical calculations • Roughness is defined as the inter-decile height WRAP 0966B

  5. Map Viewer • Area of a circle or polygon • Length and bearing of line • Distance and bearing between points WRAP 0966B

  6. Radio calculations • Unit conversion, Basic radio propagation, Traffic and Cable calculator functions User defined table WRAP 0966B

  7. Radio calculations, cont’d • Effective Earth radius factor according to COST 210 WRAP 0966B

  8. Radio calculations, cont’d • Traffic capacity calculations according to the Erlang B and Erlang C formulas • Grade of Service, No of channels, calls per hour or holding time is calculated • For Erlang C waiting time and probability of delay is also calculated • Cable attenuation for different cable lengths and frequencies • Cable data in WRAPdB WRAP 0966B

  9. Minimum separation calculations • Calculates minimum frequency separation between transmitting and receiving station • Transmitter spectrum and receiver selectivity are taken into account • Any propagation model can be used WRAP 0966B

  10. Minimum separation calculations • Calculates minimum distance between transmitting and receiving station • Transmitter spectrum and receiver selectivity are taken into account • Only terrain independent propagation models WRAP 0966B

  11. Minimum separation calculations • Iterates until the following expression is fulfilled WRAP 0966B

  12. Transmitter calculations • Occupied bandwidth, (Power above and below frequency limits equal to /2 of total power) • Transmitted power (Power within frequency limits) WRAP 0966B

  13. Transmitter calculations • Generation of modulation spectrum • AM and FM assumed to be Gaussian • M-ary PSK and M-ary QAM with raised cosine roll-off filter • MSK • GMSK WRAP 0966B

  14. Receiver calculations • Intercept point • Intermodulation level • Noise and sensitivity WRAP 0966B

  15. Antenna calculations • Conversion between antenna gain, lobe width, diameter and frequency • Conversion between the units dBi, dBd and dBv WRAP 0966B

  16. Satellite calculations • Azimuth, elevation and distance between earth station and satellite • Satellite visibility check • Visibility of the geostationary orbit • Antenna noise (according to ITU-R SA.1017) WRAP 0966B

More Related