Performance of the DBS Satellite Receiver under the Impact of Rainfall and Terrestrial Interference

Abstract

This article presents a new study on the feasibility of operating a direct broadcasting satellite (DBS) system under the effect of both precipitation and interference from a fixed service (FS) at K-band in a semiarid region. The carrier-to-noise plus interference ratio (CNIR) as a protection criterion has been adopted to make sure that the receiver of the DBS system operates with an acceptable performance under rainfall and interference from FS. Various measured data for rainfall in different areas have been utilized to investigate different rain rate exceedance percentages. Results have been shown that areas with high rain rates have a small CNIR at the DBS receiver and require large protection distances compared to low-rain rate areas and vice versa. Some mitigation techniques have been suggested to alleviate the effect of rain and terrestrial interference on the DBS receiver performance.

Realistic Prognostic Modeling of Specific Attenuation due to Rain at Microwave Frequency for Tropical Climate Region

“…Raindrop size distribution (DSD) describes the composition or There are many DSD models in the literature to analyse and evaluate rainfall events. In this paper, the two most popular ones with simplified computation convolution are considered, both of which are tagged model 1 and model 2 as described in equations ( 9), (10), (11), and (12).…”

“…It can also cause short-term and long-term impairments in radio signal communication links [7][8][9]. Adverse atmospheric weather conditions (bad weather) due to different raindrops can absorb microwave-range signals in both terrestrial point-to-point and Earth-space satellite communication systems [10][11][12][13]. Thus, resulting in substantial path loss and severe degradation in signal coverage and quality of service [14][15][16][17][18][19][20][21].…”