Range and angle error correction measure for the low elevation angle in remote sensing data analysis

Effects of tropospheric radiowave propagation were studied based on ray-tracing and parametric approach with empirical data, ECM (European Climatological Medium-range), supplied by the National Climatology Data Center in Asheville, North Carolina. Results indicate that range and angle errors vary dynamically in seasons, months, and regions. The errors in the elevation angles of less than ten degrees are higher than expected, and should not be neglected for higher accuracy requirements