IMSI Catcher and IMSI Location System

IMSI catcher and IMSI positioning device have different names according to the use scenarios and functions such as:Electronic Fence equipment,Campus mobile phone management and control equipment (selective shielding equipment for mobile phone signals) and IMSI  Positioning Device

IMSI Catcher and IMSI Location System
Product Features

1.1  Electronic Fence equipment

By deploying multiple code detection devices in one area or multiple places in the city, and then each point can mobile phone SIM card ID information of all mobile phones, upload all these layout devices to the cloud server, and collect them through the server background software, you can check To all mobile phone IDs (SIM: IMSI, mobile IMEI and WIFI MAC address) in a region, you can know the position change of each mobile phone ID at the same time, and the relationship between each mobile phone ID, such as those mobile phone IDs always together, etc. The information of the mobile phone ID is used to infer the information of the mobile phone ID holder. Based on this information, you can analyze the demographic information of a certain area, the information of the suspects, etc., and do big data analysis. This type of equipment is actually a pseudo base station or a public security base station, its purpose is not to do signal coverage, mainly to do data collection;

1.2   Campus mobile phone management and control equipment (selective shielding equipment for mobile phone signals)

The mobile phone management and control equipment is a selective shielding device for mobile phone signals. Its function is like that of the shield, which prevents the mobile phone from exchanging information with external base stations through the wireless network. This device is also an electronic fence device, except that this device can allow surrounding mobile phones to connect to code detection devices (when the signal strength of the code detection device is greater than the strength of the public network base station by 2dB, the phone will automatically switch to the base station of the code detection device to exchange information, but the electronic fence device will be removed within 0.5 seconds after the SIM card ID information is reported on the mobile phone, preventing him from accessing the code detection device, but the campus monitoring device does not perform the removal function, and the signal of the mobile phone code detection system is greater than the public network base station. When the signal is transmitted, the mobile phone is always connected to the mobile phone monitoring device, but all mobile phones are connected to the monitoring base station device, but the monitoring base station device does not have a data exchange center, so the mobile phone interface displays a good signal, but cannot exchange information with the outside, thereby achieving In order to shield all mobile phone signals in the coverage area of ​​the monitoring device, we can also whitelist some mobile phone IDs, but when the mobile phone management and control device recognizes these mobile phone SIM IDs, it is automatically removed to prevent him from access Monitoring equipment, and then these whitelisted devices return to the public network base station connection Thereby normal exchange of information with the outside.

1.3   IMSI  Positioning Device

The mobile phone positioning device is a set of equipment combining a mobile phone base station code detection device and a mobile phone signal field strength tester. Mobile phone positioning is precisely mobile phone SIM ID (IMSI) positioning. The purpose of mobile phone SIM positioning is mainly to find the location of the target SIM card user. Unlike GPS positioning, the accuracy of mobile phone code positioning can reach within 1 meter. It is a supplement to GPS positioning. It is an extension and extension of base station positioning to perform accurate positioning indoors or where GPS signals are weak. The positioning accuracy of the base station is within 500 meters, because the mobile phone needs to access the base station for communication. When the base station is connected, the approximate location of the target mobile phone is known, but the coverage of the base station is hundreds of meters or even kilometers (especially macro base stations), it is very difficult to find as to the accuracy. At this time, the mobile phone code base station was being used. B Once we use GPS positioning or macro base station positioning to know that the target mobile phone is in a certain area, at this time we use a mobile low-power base station and look in the range of the attachment to see if the target mobile phone will access our mobile small Base station. Once the target mobile phone is connected to our mobile phone code base station, we can further narrow down the location of the target mobile phone, and then use the luggage small base station or backpack small base station to enter a narrower range. Once the small backpack base station locks the target mobile phone within 100 meters, the base station can establish a connection to the target mobile phone. At this time, the uplink power amplifier of the target mobile phone continuously sends signals to the base station, and the mobile phone signal field strength meter will read the target mobile phone sending field. Use a strong size to determine the location of the target mobile phone. The larger the field strength, the closer the target mobile phone is. When the backpack base station locks the target mobile phone, the target mobile phone cannot perform other operations or access the Internet. The accuracy of such backpack-type code detection positioning can be achieved. Within 1 meter, it is possible to distinguish the accuracy of different floors and different rooms. This type of equipment is mainly used to locate the suspect's mobile phone location for public security.

The Internal Component Of IMSI Catcher

The IMSI Catcher is divided into 3 parts:
  • RF unit (power amplifier signal coverage amplification): RF power amplifier module, which amplifies the base station carrier wave and sends it out for coverage.
  • Baseband board: Simulate base station function to transmit different carriers. Handle 3GPP protocol, physical layer
  • Core network switch (X86-based core network): The core network switch mainly collects the data of the baseband board and saves and transmits it back to the cloud server background (via 4G public network or wired Ethernet or public security intranet, etc.).

IMSI Catcher Appearance

The shape of the product is mainly divided into 4 categories by product use and power amplifier power:
  • Fixed high-power equipment: such as 20W, 10W, etc. are used in die-cast chassis
  • Mobile trolley case: mainly 5W, 2W, etc.
  • Mobile vehicle type: mainly 10W, 5W, etc.
  • Backpack type: 2W, 1W, etc.
Fixed high power equipment (500 Items was sold) Mobile Vehicle Type 10 Items was sold) Mobile Trolley Type 50 Items was sold Backpack type (over 200 sets was sold)

1.1   IMSI Catcher Data Sheet

No. Type
2 Working Method Active
3 Radiate Power Maximum 20W(Adjustable)
4 Receiving Sensitivity -100dBm
5 Scan code speed >800个/min/carrier
6 Statics Captive Ratio >99%
7 Dynamic Captive Ratio 40-60km/h:>97%
60-85km/h:  >95%
8 Coverage Area 300-800meter It depends on the device power, antenna and the envrionment
9 Target Release Affect Standard Communication :<1 S;
Can set not to captive the same device at a certain time. Support Time arrangement
10 Data recall back method Wireless or Cable
11 Install Method Fix/Car carry/Module Install
12 Protection Class Waterproof, dustproof, IP65
13 Antenna Lighting Protection Optional
24 Weight Full Sets<20kg,Module <3kg (depends on the power and protocol)
25 Size Depends on the power and protocol
Signalwing Corporation
Address:4th Floor, No. 41A Bld, 5th Huaide Cuigang Industrial Park, Fuyong Street, Bao\'an District, Shenzhen ,China 518103.