At the time when the automotive electronics market is becoming more and more popular, car GPS is becoming more and more popular. In order to attract customers, many GPS businesses continue to advocate how powerful their products are and how accurate their positioning is. Many even say that their equipment is in underground parking lots or indoors. Can locate. Isn't that the case? Let's listen to the analysis.

Whether the car can be located in the parking lot or indoor places with poor signals depends on the positioning method of the positioning device. We know that common indoor positioning technologies include infrared technology, radio frequency identification technology, ultra-wideband technology, wireless local area network, Bluetooth technology, etc. The main positioning methods of car positioning equipment are: 1. GPS positioning, 2. Base station positioning, 3. WiFi positioning, 4. Beidou positioning, and a small number of manufacturers will use RFID positioning technology, IP positioning, Bluetooth positioning, etc. Are these positioning methods used in the car suitable for indoor positioning? Not much nonsense, the following analysis one by one.

GPS positioning: GPS positioning is the most commonly used vehicle positioning device. Almost every locator has this function. However, GPS cannot locate indoors, underground parking lots, under high bridges, and places with dense floors. This is also well known in the industry. However, when using GPS, you need to be in an open place outdoors where you can receive GPS satellite signals. It is basically hopeless indoors. Even when installing it, be careful not to have metal or other objects blocking its signal. So, GPS positioning, OUT!

Base station positioning: When the car enters an area where there is no GPS signal, there is usually another auxiliary positioning method-base station positioning. This is one of the reasons why many products are boasted of indoor positioning. Yes, base station positioning can indeed be used indoors, but did you know? The error of base station positioning is much larger than that of GPS positioning, usually between tens to hundreds of meters, sometimes larger, even more than 1,000 meters, just imagine , It’s still difficult to find a car within a few hundred meters...In addition, we know that the accuracy of base station positioning depends on the base station, just like our mobile phone. LBS positioning is not possible, and many times, when in underground parking lots, our mobile phones have very little signal, so, as a result, you know.

RFID positioning: This is one of the common indoor positioning technologies, but it is a pity that most GPS car trackers are used to remotely open and close the doors, windows and anti-theft. They are not really used for positioning.

Bluetooth positioning: Bluetooth positioning is mainly used for small-range positioning, such as single-story halls or warehouses. For a mobile terminal device with an integrated Bluetooth function, as long as the device's Bluetooth function is turned on, the Bluetooth indoor positioning system can judge its location. This shows that it is not suitable for car positioning, let alone indoors.

To sum up, so far, gps car tracker cannot really be used in indoor and underground parking lots. Even if there is a signal to locate it, the error range is very large. Car owners must make rational analysis and judgments when buying, and they cannot simply buy at the seller’s advocacy.

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