Precautions for using GPS locator

Precautions for using GPS locator

1. GPS can not be 100% positioning, let alone believe the nonsense of indoor positioning – GPS is not like mobile phone broadcast, you can receive signals anywhere, many things will affect GPS reception, including sky star distribution status, buildings, viaducts, radio waves, leaves , hot paper, etc., there are too many things that will be affected. Generally speaking, looking up from the GPS position, you can see the area of ​​the sky, which is the area where the GPS can receive signals.

2. Don’t use it once or twice, or a day or two, to decide the quality of the GPS locator – because the status of the satellites in the sky is different every day, maybe in the same place, the reception is full in the morning, but it is impossible to locate at night. It is also possible that the positioning situation is not good for several days in a row.

3. To compare the quality of the GPS locator, it must be compared in the same place at the same time – many people who buy a new GPS locator will say that the one I used before is better, but this is not correct, because the use time Different locations, the final result is much worse, must be used for a long time, or at the same time, in order to feel the difference between the two GPS.

4. There is no so-called GPS for indoor positioning – basically, there is no signal indoors, there is no signal. For real indoor positioning, you must be indoors from the cold start, but it can be positioned as well, which is the real indoor positioning. Therefore, indoor positioning is basically base station positioning or WIFI positioning mode.

5. To buy a GPS tracker, you do not need to choose the brand as the purchase option, but you can choose the chip used internally – basically, there are many GPS manufacturers, and the choice of the manufacturer is only for after-sales service. Generally speaking, the GPS of the same chip is made by different manufacturers, and the effect will not be much different. Therefore, if you choose GPS instead of the brand, you can choose the GPS receiver chip.

6. The positioning is not accurate, it is not necessarily the fault of the GPS – basically the positioning error can be within 20 meters, which is considered a good GPS. In addition, the GPS position is not very accurate on the road. There may be many reasons, which may cause poor reception. The error may be due to a problem with the map data, or it may be that the road is very wide, so it seems that the GPS seems to be stably offsetting the road surface. After a long time, you will know whether the problem is with the GPS or the map.

7. To buy a GPS locator, the specification table is for reference only – GPS specifications, what seconds to complete the positioning, what meters of error, sensitivity and other information, these are all well-written, only know when you really use it, seriously, Comparing spec sheets is a waste of time.

8. The GPS locator can be placed in the car as long as it can be placed in the car – except for external antennas, things like GPS mouse can be placed in the car as long as it can be placed in the car, because although the GPS is waterproof, it will inevitably be placed outside for a long time. When there is a hanging point, and you have to put it back and forth when you get on and off the car, it will be dried out when you put it outside. It is recommended to choose the hot paper carefully, or cut a hole in the hot paper and paste other things to see It won’t look ugly.

9. If the GPS locator is newly bought and used for the first time, or it is already in the cold start state, please go to the open area to locate the vehicle outside the vehicle – this way, the positioning speed is faster, and there will be no strange phenomena. , If you go directly to the road in the cold start state, even if the signal is strong, you may not be able to locate the destination! This is very important. After positioning, put it in the car to see if the signal in the car will be received. It will be relatively poor. In addition, the longer the single GPS is used, the longer the satellite data can be saved. If it is not used for a long time, such as one to two weeks, the GPS may return to the cold start state.