In modern geodetic research and satellite navigation systems, such as GPS, the accuracy and reliability of the data received play a crucial role. One of the key components that ensures high accuracy and minimizes the influence of external factors is the "Choke Ring" antenna. These antennas have gained popularity due to their unique characteristics, making them indispensable in various fields, from geodesy to scientific research.

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The "Choke Ring" antenna type has several key advantages, especially in the fields of geodesy and satellite navigation systems like GPS:

1. Multipath Suppression: The main feature of the Choke Ring antenna is its ability to reduce multipath effects. This is achieved through the ring elements that surround the main part of the antenna. These rings block signals that are reflected off the ground or other surfaces, allowing the antenna to receive a clearer and more accurate signal.

2. High Accuracy: Due to the reduction of multipath effects, Choke Ring antennas provide high accuracy in location determination. This makes them ideal for use in geodesy, mapping, and any applications requiring high precision GPS navigation.

3. Reliability in Various Conditions: Choke Ring antennas perform well in various conditions, including complex urban and natural landscapes. They are less affected by the environment, which improves the stability and reliability of the signal.

4. Application in Scientific Research: These antennas are often used in scientific research, such as space geodesy and monitoring of the Earth's crust, where particular precision in measurements is required.

Because of these advantages, Choke Ring antennas are considered one of the best choices for tasks where precision and reliability of satellite signal reception are critically important.

Tech Chat | Should I Choose A Choke Ring Antenna For My Reference Station?

-04-11

Since our SV100 GNSS receiver was released half a year ago, many users have shown great interest and got positive feedback about it. Most of our users have used the SV100 as a reference station for their CORS or monitoring projects.

When supporting our SV100 users building reference stations, one of the most frequently asked questions is - should I use a choke ring antenna for SV100? What are the advantages of choke ring antenna over geodetic antenna?

In today's blog, we will give a brief introduction of Choke Ring antenna and hope this will help you to make a decision.

What Is Choke Ring Antenna?

The structural design of the choke ring antenna has been proven worldwide to effectively reduce the strength of most multipath signals. It consists of a circular ring with a number of slots or gaps in it, which effectively act as wave guides to cancel out the reflected signals. The ring is typically made of a conductive material, such as metal, and is placed above a ground plane to further reduce interference.

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A choke ring antenna is a type of GNSS antenna that is designed to mitigate the effects of multipath interference. It is usually a quarter wavelength deep, in order to create a high impedance surface that prevents propagation of surface waves near the antenna and excitation of undesired modes. The net effect is a very smooth controlled pattern with low susceptibility to multipath.

What Is Multipath Interference?

Multipath interference occurs when the satellite signal is reflected off a surface, such as a building or a vehicle, and arrives at the antenna at different times, causing errors in the GNSS measurements. 

When GNSS signals reach the choke ring antenna, they pass through the gaps between the rings and are received by the antenna element. The reflected signals, on the other hand, are blocked by the rings and are not received by the antenna element. This helps to ensure that the signals received by the antenna are only the direct signals from the GNSS satellites, which results in more accurate positioning.

Therefore, choke ring antennas are commonly used in high-precision GNSS applications to reduce the multipath error, such as national CORS and large monitoring projects etc.

Is the Choke Ring Antenna Essential?

In addition to the choke antenna, there is also a small type of GNSS antenna that can be used in reference stations &#; the geodetic antenna. Judging from the market feedback, it also has a good performance and is worth recommending.

Compared with geodetic antennas, choke ring antennas are obviously more professional. But correspondingly, the price of the choke ring antenna is also quite high, generally four or five times higher than that of the geodetic antenna.

In conclusion, for users who have sufficient budget and plan to build a professional CORS network, the choke ring antenna is the first choice. But if you just build a station for your own use without strict project requirements, geodetic antennas will be your cost-effective solution.

SingularXYZ SA100 Geodetic Antenna and SA500 Choke Ring Antenna are ready for your difference demands.
https://www.singularxyz.com/SA500.html
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