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Published byCaitlin Pope Modified over 9 years ago
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Calculator functions 1 WRAP 0966B
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Calculator functions in WRAP Different calculation functions in different dialogues Geographical calculations General radio calculations Minimum separation calculations Transmitter, receiver and antenna calculations 2 WRAP 0966B
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Geographical calculations Conversion of co-ordinates between geographical datums Distance and bearing between two points Free space loss between two points Roughness 3 WRAP 0966B
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Geographical calculations Roughness is defined as the inter-decile height 4 WRAP 0966B
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Map Viewer Area of a circle or polygon Length and bearing of line Distance and bearing between points 5 WRAP 0966B
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Radio calculations Unit conversion, Basic radio propagation, Traffic and Cable calculator functions 6 WRAP 0966B User defined table
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Radio calculations, cont’d Effective Earth radius factor according to COST 210 7 WRAP 0966B
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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 8 WRAP 0966B
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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 9 WRAP 0966B
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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 10 WRAP 0966B
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Minimum separation calculations Iterates until the following expression is fulfilled 11 WRAP 0966B
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Transmitter calculations Occupied bandwidth, (Power above and below frequency limits equal to /2 of total power) Transmitted power (Power within frequency limits) 12 WRAP 0966B
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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 13 WRAP 0966B
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Receiver calculations Intercept point Intermodulation level Noise and sensitivity 14 WRAP 0966B
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Antenna calculations Conversion between antenna gain, lobe width, diameter and frequency Conversion between the units dBi, dBd and dBv 15 WRAP 0966B
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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) 16 WRAP 0966B
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