Industry News

Home > NEWS > Industry News

Company News

Industry News

GPS positioning accuracy

source:Industry News release time:2022-12-06 Hits:     Popular:realtime gps tracker online

  TK103B

  GPS positioning accuracy can be inspected under static and dynamic conditions, and the dynamic positioning effect is better than the static positioning. The nominal positioning parameters of the GPS module refer to those measured in a fully open sky with good satellite signals. Therefore, it is difficult to achieve the nominal positioning time and positioning accuracy in conventional testing. There are two common methods to describe horizontal positioning accuracy: one is "horizontal positioning accuracy", and the other is "horizontal positioning accuracy"? M CEP, namely circle probability error, means that 50% probability of the measured point is located at a circle center with the real coordinate as the center, and the probability of the measured point is 50%? M is within the circle of radius; Second is? M 2DRMS, i.e. twice the average root mean square error of water, means that there is about 95.5% probability that the measured point is located at a circle center with the real coordinate as the center? M is within the circle of radius.

  The positioning accuracy of the GPS module depends on many aspects, such as the satellite clock error and orbit error from the GPS system, the number and geometric distribution of visible GPS satellites, solar radiation, atmosphere, multipath effect, etc. In addition, the same GPS module will generate different positioning errors due to antenna and feeder quality, antenna position and direction, test time period, open sky range and direction, weather, PCB design, etc. Even if different GPS modules of the same manufacturer and model are tested simultaneously with antenna diversity, the static drift will be different.

  The GPS module is often used as the time reference in practical applications, supplemented by the RTC inside the module, which can obtain very high precision time reference, providing great convenience for product design. As for GPS velocity measurement, it is only an expanded application of simple calculation based on longitude and latitude.

  The common antenna of GPS is a ceramic flat antenna, which has low cost, an external active amplifier circuit, a single direction of receiving signal, and a high gain ratio, so it is widely used. However, its disadvantage is that it is large in size and prone to frequency drift caused by temperature. If the ceramic area is smaller, the receiving gain will be affected; If it is thinned, the receiving bandwidth of the receiving antenna will be affected, and it will also be affected by the active amplification part. The size with good use effect is 25 × twenty-five × 4mm3。 The ceramic antenna has the best effect when it is placed vertically upwards in actual use.


Read recommendations:

CantrackGPS

fleet gps trackers company

C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)

The significance of GPS positioning technology in the construction machinery industry.GPS Rastreader

Teach you to find a high -quality GPS positioner manufacturing supplier.fleetmanagement webfleet sol

Last article:The obvious advantages of GPS products (actual effect)

Next article:GPS performance indicators

Related Information

cantrack g05

2023-04-11

4G GPS Tracker Manufacturing

2023-04-23

Car gps tracking Processing

2023-04-23

gps vehicle tracker wholesaler

2023-04-11

mini gps tracker Factory

2023-04-23

mini gps tracker distributors

2023-04-23

Dog gps tracker Manufacturing

2023-04-23

fleet gps trackers maker

2023-04-23

Pet GPS Tracker manufacturer

2023-03-16

Gps speed limiter sales

2023-04-23

G02M Pet Tracker

2022-06-19

YG119- Hunting Dog GPS tracker

2023-10-07

GF70L-Solar Magnetic Asset GPS Tracker

2023-10-07

G900LS 8 Lines-4G Car GPS Tracker

2025-03-31

G08L - 4inch Smart Tail Light Tracker

2022-06-20

What should I pay attention to when buying GPS products?

2022-08-10

How to install and use the car GPS positioner

2023-02-14

GPS is mainly composed of.obd-II port gps tracker Manufacturing

2023-05-20

satellite-satellite tracking technology

2022-07-28

GPS application

2022-08-01

There are many types of GPS satellite receivers.GPS Tracker for vehicles manufacture

2023-08-26

How to use GPS car tracker.realtime gps tracker online wholesale

2023-04-15

Which vehicles are the on-board GPS locator terminals applied to.gps vehicle tracker

2023-10-07

Car GPS.obd-II port gps tracker Processing

2023-05-13

What are the classification of GPS system.gps tracker no monthly fee wholesale

2023-04-21

Advantages of Automotive Beidou/GPS Positioning Products.4G GPS Tracker for vehicles supplier

2023-09-15

Comprehensive management of GPS satellite positioning and driver smart card for business and officia

2023-07-07

The Application of Vehicle GPS in Enterprise Vehicle Management.gps tracker device wholesaler

2023-06-25

GPS system architecture and analysis

2022-09-01

The new version of the bicycle is equipped with a GPS tracker and an electronic lock device

2022-09-08