Users connect to satellite communication lines through satellite communication earth stations for mutual communication. The main business includes telephone, telegraph, fax, telex, television, and data transmission. In the mid-1960s, in order to put satellite communication into practical use, geostationary orbit communication satellites were mainly used. Satellite communication uses the microwave frequency band. Due to the fact that satellites are more than 30000 kilometers away from Earth and have significant radio path losses, Earth stations require the use of large aperture antennas, high-power transmitters, and high sensitivity and low noise receiving systems. Satellite communication earth stations are divided into fixed stations, transportable stations, and mobile stations (onboard, onboard, and aircraft) according to their usage; According to communication performance, it is divided into standard stations and non-standard stations, which are further divided into A, B, C, and D within standard stations
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China