Spectrum Center launches ITU-R P.1812-5 in Spectrum-E©

Spectrum Center implements ITU-R P.1812-5 in Spectrum-E©, introducing path-specific propagation methodology for point-to-point area terrestrial services in the VHF and UHF bands.

The first ITU recommendation for radio propagation that can leverage highly granular Digital Surface Models (DSM), while considering non-deterministic propagation factors such as tropospheric scatter, anomalous propagation and location variability.

ITU-R P.1812-5 is comprised of several propagation mechanisms including line-of-sight, diffraction, tropospheric scatter, anomalous propagation (ducting and layer reflection/refraction), height-gain variations in clutter, location variability and building entry loss. The method calculates basic transmission loss (dB) not exceeded for p% time for the medium value of locations, after which the location variability element is considered. While the model considers a variety of deterministic and empirical propagation elements in the path loss calculation, it is proven to yield a consistent level of transmission loss prediction. ITU-R P.1812 provides easy reproducibility of results, as well as providing a better degree of standardization in prediction methods for point-to-area terrestrial services in the VHF and UHF bands.

Qinyuan Huang, Spectrum Center Software Engineer involved with the implementation of the ITU-R P.1812 recommendation into Spectrum-E, says, “As a development team, we are constantly looking at ways to add value to our end-users. This implementation demonstrates clear value-added benefits, with users able to access an increasing number of propagation methods in line with ITU recommendations in Spectrum-E©.”

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