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HF Planning

HF Planning. HF Planning. Planning of HF systems employing ionospheric propagation WRAP uses software from the Institute for Telecommunication Sciences in the USA ITS HF software is accessed from within WRAP Properties of stations with definitions according to WRAP standards are used

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HF Planning

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  1. HF Planning WRAP 0971D

  2. HF Planning • Planning of HF systems employing ionospheric propagation • WRAP uses software from the Institute for Telecommunication Sciences in the USA • ITS HF software is accessed from within WRAP • Properties of stations with definitions according to WRAP standards are used • Data is transferredautomatically to the ITS codes • The standard installation of the ITS HF software can be used external to WRAP. WRAP 0971D

  3. Main tools The following ITS programs can be used: • VOACAP/ICEPAC/REC533: For point-to-point calculations • VOAAREA/ICEAREA/RECAREA: For point-to-area calculations • HFAnt: For antenna editing and generation. WRAP 0971D

  4. Data from WRAP • The following data required by the HF tools is taken from WRAP projects: • Transmitter, receiver coordinates • Transmitter, receiver names • Frequency list • Required S/N (from receiver necessary bandwidth and required S/I) • Transmitter, receiver antennas (in ITS HF format) • Transmitter power • Transmitter, receiver antenna azimuths WRAP 0971D

  5. Time availability WRAP 0971D

  6. SNR at required reliability WRAP 0971D

  7. SNR along a p-t-p path WRAP 0971D

  8. Time availability, area plot WRAP 0971D

  9. Propagating frequency range • Calculation of the propagating frequency range based on • Time of year, time of day interval, sunspot number • Station properties • Station locations • Frequency limits • Low: LUF for defined reliability • High: Selection of FOT, MUF, HPF, HPF+20% • Band definitions over time-of-day interval • Maximum frequency range to propagate all the timeTypical application: Fixed-frequency, frequency hopping • Lowest and highest frequency having propagationTypical application: ALE, frequency adaptive systems WRAP 0971D

  10. Propagating frequency range • Function available to • Create allotments • Assign frequencies to stations and networks • Divide allotments to generate for instance ALE pools WRAP 0971D

  11. Integration features • WRAP functions available for HF Planning: • WRAPdB storage of stations • Creation of stations with all the basic features for duplication, linking, moving, map handling, groups, sites, templates, nets etc • Handling of equipment data • Generation of allotments (frequency lists) for networks and links, considering spectrum utilisation as defined by available databases • ITS HF features • Point-to-point planning • Point-to-area planning • Sophisticated, versatile and widely accepted methods • Wide-spread software with very large user community WRAP 0971D

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