干旱区生态环境知识资源中心

Effect of sand storms on microwave link had been presented and evaluated by finding the attenuation and scattering properties for suspended sand samples on a link that operates at 3GHz on desert region of Libya. This link as the map shows located on the medial region of Libya and originates from the Mediterranean Sea shore deep into the desert. Sand samples were collected from six sits over a period of seven months. The first from the city of Agedabia (latitude 30' 15''' 40.75N, longitude 19' 11 '' 19.86E) which is near the Mediterranean sea (in the golf of Sirt), but has a climate as that for the desert besides the high humidity, the second is from a repeater site (station 2) which 20 km to the sought of Agedabia the third from station 3 (55km south of station 2), the fourth from station 4 (55 km from station 3) the fifth from the repeater station at city of Jalo which is 250 km south of Agedabia and the last sample where from the repeater station of Serier which is about 320km south of Agedabia deep in the desert. A big variation in, the chemical composition, and the dimensions were found from the results a model for finding the attenuation factor per unit length were presented and used along with Particle Size Distribution PSD.