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  • Analyse existing or planned radio system performance under optimal and adverse conditions.

 

  • Quantify the effect of varying radio system parameters on the overall system performance to find optimum system configuration for each situation. Simulation is a less time consuming and expensive way of trialling the many combinations of system parameters than full field trials. 

 

  • System parameters to vary may include; antenna gain and direction, Tx power, Rx sensitivity, background radio noise, path-length, Tx and Rx heights, spread spectrum.

 

  • Assess effects on radio propagation, e.g.;

    • terrain, buildings, atmosphere on line-of-sight VHF,UHF and SHF

    • ionospheric effects on over the horizon sytems such as HF and SATCOM

    • ground type and sea state effects on surface wave LF and MF

Radio Interference and Spectrum Management
Radio network performance assessment
  • If not managed properly in terms of; frequency and bandwidth, location, transmitter power and other factors, radio systems may interfere with each others performance. 

  • Spectrum Management is the technique of ensuring minimal interference between radio systems.

Radar
  • Many parameters affect radar performance such as;

    • target radar cross section (RCS) 
    • propagation losses due to distance, ground reflection, terrain/vegetation obstruction 
    • transmitting and receiving antenna gains, directivity
    • transmitter power
    • receiver sensitivity
    • background noise
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