The influence of external and environmental factors causes different signals:
1. Because the base stations of China Mobile, China Unicom, and China Netcom have different power and channel numbers, and the distance between the base station and the prison, the size of other nearby buildings, topography, and landforms are different, and the various signals that form the prison area are different.
2. Because the scale, construction structure, local mobile phone base station direction, power, topography and other factors are different for each prison, the cell phone signal strength, number of channels, and frequency bands in each area of the prison are different. In addition, radio waves are invisible and intangible, and are affected by various factors during their transmission.
3. Because in the practical use environment, the direction of each base station, the size of the power, the distance between them, there may be dozens of channels in the same environment for users to actively select different characteristics of the mobile phone, together with indoor and outdoor space field strength differences, ground and Metal objects have a very complex adverse effect on the signal jammer by the mobile phone. So we all have this understanding. For example: (a) In different areas, some mobile signals are strong, and some Unicom signals are strong; (b) Even in the same place, the signal is different, and there are strong and weak points, so mobile phones The signal shielding system is a highly professional system project.
Methods adopted for the above reasons:
1. Carry out detailed field surveys, topography, landforms, etc. of the prison environment, very carefully, shielding the regional environment from the survey requirements, understanding the customer's practical requirements, and designing a personalized treatment plan. Therefore, it is necessary to carry out project investigation and project processing, and deal with the problems for customers in a scientific and systematic way.
2. Thorough analysis, a thorough analysis of the local signal distribution and construction structure. Use non-general general equipment to locate and measure by series of instruments. Choose different composite antennas, based on the organic combination of antenna application principles of different frequency bands.
3. Construct structure, terrain and local base station direction, power, channel, etc. through on-site survey; and have a large number of strong communication microwave technology, sophisticated business, high quality, strong sense of responsibility, very careful requirements for details, and rich construction experience The employees can meet the construction needs of the large-scale mobile phone signal shielding system project, and promptly handle and deal with various difficult problems on the spot. Complete and abundant professional technical information, professional test analysis equipment, deal with practical problems for prison customers, and provide customers with the best solution.