Analysis of the working principle of cell phone jammer in court
The court represents an organizational unit of judicial affairs and a subordinate unit of the court. It is the judge's fair and lawful process based on objective facts and evidence and decides whether the party has broken the law and what kind of punishment to expect is to be imposed, or decides whether the party is involved in the incident The basic organizational unit of the arbitrator of the responsibilities or obligations assumed therein.
The courtroom is sacred and solemn. To maintain order in the courtroom and prevent them from being disturbed, cell phone jammers are usually used. The normal operation of the court has the function of stopping socially illegal incidents, upholding social fairness and justice, promoting the peaceful coexistence of all members of society, and maintaining the healthy operation of society.
The principle of the cell phone jammer is: within a certain frequency range, the cell phone and the signal tower are connected by radio waves to complete the transmission of data and sound with a certain baud rate and a certain modulation method. According to the above communication principle, the jammer scans from the low frequency of the forward channel to the upper frequency at a certain speed during the working process.
The scanning speed may cause garbled characters in the mobile phone received message signal, and the mobile phone cannot recognize the normal data sent by the signal tower, so the mobile phone cannot connect to the signal tower. The mobile phone manifests itself as the phenomenon of searching the network, no signal, no service system, etc. At some point, the mobile phone has no signal and cannot receive SMS and calls.
Scope: We prohibit the use of mobile phones in various examination rooms, schools, gas stations, churches, courts, libraries, conference centers (rooms), theaters, government agencies, finance, prisons, public security, military areas, etc.
