source:truck tracking webfleet solutions release time:2022-09-27 Hits: Popular:realtime gps tracker online

The function of the GPS receiving antenna is to convert the electromagnetic wave energy of the radio signal from the satellite into the current that the receiver electronic device can ingest and apply. The size and shape of the antenna are important because these characteristics determine the antenna's ability to pick up weak GPS signals. As required, the antenna can be designed to work on a single L1 frequency, or it can work on two frequencies, L1 and L2. Since GPS signals are circularly polarized waves, all receiving antennas are circularly polarized. Despite various constraints, there are still many different antenna types, such as monopole, dipole, helical, quadrifilar helical, and microstrip antennas.
There are generally two types of built-in antennas for GPS receivers we see on the market - flat-panel antennas and four-armed helical antennas. What are the advantages and disadvantages of the two antennas? Let us answer them for you.
Panel antennas are the most common type of antenna due to their durability and relative ease of fabrication. Its shape can be round, square or rectangular, like a copper-clad printed circuit board. It consists of one or more pieces of metal, so the most common shape for GPS antennas is a lumpy knot, like a biscuits. Since the antenna can be made small, it is suitable for aerospace applications and personal handheld applications.
Another major characteristic of an antenna is its gain pattern, or directivity. Using the directivity of the antenna can improve its anti-dry and anti-multipath ability. In precise positioning, the stability of the phase center of the antenna is a very important index. However, in ordinary navigation applications, people hope to use an omnidirectional antenna to receive at least the visible satellite signals in all the sky within a field of view of five degrees above the antenna horizon. However, when the flat-panel antenna is directly above the satellite, the signal gain is the largest. , there are two problems:
1. The receiving range of the tablet is above the tablet, and the tablet should face the sky, which will bring trouble to hand-held and vehicle-mounted. We can see that there are more and more CF receivers with adjustable angles (foldable SDGPS), because the tablet The characteristic of the type antenna makes the manufacturer come up with a trick for the receiver to have a better reception effect.
2. We know that although the satellite signal above our head is better and easier to lock, the satellite above is actually the most useless. If there is no low-angle satellite, the error will be relatively high, and the accuracy will be very high. Difference. So based on these shortcomings, four-arm helical antennas have also been used on GPS receivers.
Read recommendations:
10000mAh Magnetic Asset GPS Tracker
GPS precautions.portable gps tracker supplier
Introduce how Shao uses Beidou to determine the three -dimensional space location.plug & play Ob
Last article:GPS Quadrifilar Helix Antenna (Quadrifilar Helix Antenna)
Next article:GLONASS and Galileo systems
Related Information
gps tracker for bike Factory
2023-04-23GPS Trackers custom
2023-04-11fleet gps tracking supplier
2023-04-23Asset GPS Tracker
2023-03-164G GPS Tracker wholesale
2023-04-23mini gps tracker Vendor
2023-04-23Dog gps tracker Vendor
2023-03-16fleet gps tracking maker
2023-04-23pet gps tracker cat
2023-03-16GPS Trackers Solution
2023-04-11P60L Personal gps tracker
2022-06-21G900LS 8 Lines-4G Car GPS Tracker
2025-03-31G02M Pet Tracker
2022-06-19TK100B- Accurate Pro version GT06/TK100
2023-10-06G900LM-4G Car Mini GPS Tracker
2025-03-25Why is the gps tracker showing offline?
2022-09-08GPS development mode
2022-11-19What is the difference between a car GPS locator and GPS navigation?
2022-07-08GPS user equipment
2023-06-01The new version of the bicycle is equipped with a GPS tracker and an electronic lock device
2022-09-08GPS scheme from hard to soft.obd-II port gps tracker Production
2023-05-23GPS maintenance.obd2 gps tracker verizon maker
2023-06-09Experience of using wireless gps tracker GM09C
2022-09-08What are the information methods sent by GPS reference stations.gps tracker app Manufacturing
2023-06-14Where are car mounted GPS locators usually installed.mini gps tracker distributors
2023-06-25Gps speed limiter.GLONASS Satellite Navigation System
2023-10-11GPS Global Positioner.fleet gps tracking wholesaler
2023-05-27GPS helps you avoid the electronic eye
2023-02-02GPS application in wild animals.gps tracker no monthly fee manufacturer
2023-04-24How to buy GPS positioner.obd2 gps tracker verizon
2023-03-14