The common direction antenna of cell phone jammer will be exhibited

 The common direction antenna of cell phone jammer will be exhibited.
The disadvantage is the need to move the station built-in GPS antenna and GPS chips, modules, and the need to support the IS-801 protocol, the network side of the need to increase the PDE and MPC; positioning accuracy by which the environmental impact of a larger terminal, such as indoors or in the user between tall buildings, due to the small number of visible GPS satellites, positioning accuracy will be reduced, or even unable to complete the positioning. . A-GPS and GPS solutions, but also need to increase the mobile GPS receiver module, and the transformation of mobile phone antenna, but the phone itself is not calculated on the location information, but the GPS location information data to the mobile communication network, the network position of the positioning server computing, and mobile network according to the GPS reference network generated by the auxiliary data, such as differential correction data, the satellite transmits to the mobile phone running, and from the database to identify the approximate location and cell phone location information passed to the phone. The most effective and feasible method of testing valid shielding distance of cell phone jammer is as follows.When the phone can quickly capture the GPS signal, so that the first capture time will be greatly reduced, usually only a few seconds. Technically can be divided into time of arrival (TOA), Enhanced measurement of time difference (E-OTD) and GPS-assisted (A-GPS) 3 ways.Turn on cell phone jammer and hand hold every cell phone. TOA was measured parameters and their errors are collected and sent together with the value of SMLC, according to the data, SMLC calculates the required mobile location applications, location information and then sent back to the error range of applications. TOA positioning method requires additional hardware (LMU), in order to achieve accurate calculation of burst arrival time for the purpose. There are other ways to achieve: LMU either integrated within the BTS, but also as a separate device. LMU as a separate device, can have a separate antenna, the antenna can also be shared with the BTS through the air interface for network communication.The signal emission performance and distribution of omnidirectional antenna of cell phone jammer is described as follows.
And can remove the software to install a security code, to further protect the software usually can not be changed or deleted others. When the phone is "suspended animation" program is running, the phone is locked to suspended animation, if necessary to re-unlock the phone, only through the unique way: the parties to carry identity cards and mobile phones and SIM locked to the phone operator for unlocking. Only through this approach can only ensure that the parties encounter danger when there is adequate protection, and not be a simple way to unlock the illegal elements and hidden help. Compared with limitation of testing software by the cell phone and conversion after being tested by professional instruments, it is the easiest way to master for cell phone jammer .