This GPS antenna (GKA-GPS-003) is magnetic and adhesive mount external antenna It is used in telematics and M2M applications, such as in commercial vehicle installations for fleet management, navigation . This antenna cable length is rg174-3m or according customer request . Connector is SMA male , the LNA gain is 28dbi .
Compact Construction/ Low Profile/Fully Waterproof
Magnet and Screw Mount Base
Excellent Temperature Stability
Low Noise Figure
Car Tracking Navigation System
AVL / Fleet Management Systems
External Antenna for Handheld GPS
External Antenna for PDA Navigator
Range Of Receiving Frequency
In Center Frequency
Antenna Test Device
GaoKe Ant Co.,Ltd is manufacturers of GPS active antennas for all types of GPS applications including navigation and tracking purposes. Also available are GPS/GLONASS antenna ,GPS Car Antenna ,car external antenna,car gps antenna external antenna,GSM antenna, 2.4g antenna, 5.8g antenna, 433mhz antenna ,915mhz CDMA dual antennas systems.
Analysis of GPS Antenna Principle
Its wavelength λ2 = 24.42cm. The frequency difference between the two carriers is 347.82MHz, which is about 28.3% of L2, so that the carrier frequency is selected to facilitate or eliminate the propagation delay error caused by the ionospheric effect when the navigation signal is propagated from the GPS satellite to the receiver. Pseudo-random noise code (PRN) that distance code mainly fine range code (P code) and coarse distance code (C / A code) two. Where the code rate of the P code is 10.23 MHz and the code rate of the C / A code is 1.023 MHz. The data code is the navigation and positioning data sent by GPS satellites in binary form to the user receiver. It is also called navigation message or D code. It mainly includes satellite calendar, satellite clock correction, ionospheric delay correction, working status information, C / A code conversion The total message is composed of 1500 bits, divided into five subframes, each subframe in 10s within the launch of 10 words, each word 30, a total of 300, so the data The baud rate of the code is 50bps .
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