By frequency hopping, two drones can fly simultaneously. They must not interfere with each others’ signals. Avoid flying more than three drones at a time, as only three channels are available for you to use. The stability of the remaining five channels is dependent on your ability to control them.
Understanding the connections between drones and their remote controls via Bluetooth, WiFi, and proprietary wireless protocols, such as DJI’s OcuSync, can help you see exactly where the limits of multiple drones are flying.
This article will explain how to fly two drones at once and what risks you face if you have more than one drone.
Extra experience is required by the pilot when flying more than one drone. This includes frequency selection and skills in maneuvering around other drones. Multiple drones can pose a risk to your drone pilot skills, no matter how much you know.
This guide will help you fly two drones simultaneously, securely, and safely with as little risk as possible to both the drone and you.
DJI has recommended that you limit your drone flying to three at a time. But, DJI has seen many instances where more drones are flown at the same time.
You can have up to 13 channels when your drone uses 2.4GHz WiFi. Three of these channels can be used simultaneously, but they are not considered to be non-overlapping. Drones constantly channel hop to maintain a strong and stable connection with the remote control. We must ensure that the drone can choose from redundant channels if it is not currently chosen.
The greater the likelihood of interference caused by the signal overlapping with other drones, the higher the chance they will fly together. The drone’s distance to the remote control and power are key factors in determining the strength of interference. These variables can lead to an unstable connection between the drone and your remote control while you’re flying.
If you cannot communicate with others, it is best to fly only three aircraft at a stretch.
You should set your WiFi connection to 5.8GHz if multiple drones are being flown in the same place. You will find a lot more WiFi channels here, and they are less likely to overlap. 24 of these 45 channels don’t overlap.
You can fly with greater confidence because channel hopping gives the drone more options to choose a stable channel to follow you throughout your flight.
Your drone will not travel as far using a 5.8GHz frequency to connect with it. Your drone might have trouble connecting if it is flying at greater than 500m distance from the remote control. For most drone pilots, this is not an issue.
The 5.8GHz frequency allows you to fly in urban areas with limited WiFi coverage.
The channel with the lowest interference is the one to choose.
It is possible to use your drone for signal interference detection by monitoring all channels.
The DJI GO4 app lets you observe the interference. The HD model of the app will show the signal activity on each channel. This will allow you to view data for both 2.4 GHz and 5.8 GHz HD channels. Channels with no interference should be chosen. It is best to have no bars showing, and preferably, no interference from adjacent channels.
Many drone pilots opt to only fly in 5.8GHz mode due to the noisy urban environments they are flying in.
You can stand 10 feet from each other
If flying multiple drones at once, each pilot must be approximately 10 feet from the next. Each remote control is similar in power and will cause interference to the WiFi signals.
Machine learning is being used to detect drones and extract 31 attributes from the WiFi signal. In the future, machine learning will be more widely used to select the right WiFi signal and increase stability between the drone and remote control.
Manufacturers have already started to develop their proprietary software for wireless communications, claiming that it is more stable, quicker, and can transmit high-definition video over greater areas.
DJI’s proprietary technology OcuSync was also developed by DJI, allowing it to communicate over greater distances.
It is clear that DJI’s OcuSync2.0 has the longest range. Due to the availability of small electronics and smart devices, WiFi is a common feature in drones.
If you are flying with multiple pilots, it is best not to use boosters or high-powered remotes. You can cause interference with other drone pilots’ connections if you use a booster or any high-powered remote control.
Parabolic mirrors serve as signal boosters for drones. They reflect the signal from the controller towards the drone. It can allow you to fly further, or it can be used to reduce signal dropouts in WiFi and 5G areas.
If there are no other signal boosters, your increased power can easily confuse any drones nearby.
In essence, the strongest emitter wins. Jammer technology has used this principle to prevent drones from flying close to sensitive areas.
Jamming refers to the distortion of the signal so that the receiver cannot detect it completely or at least not achieve certain parts of the system. This can result in the complete or partial denial of service between the drone controller.
The laws and regulations in most countries prohibit you from flying more than one drone at once.
These are some of the key considerations to make when you fly with multiple drones in the same location. Even if your piloting skills are excellent, mistakes can cause severe damage to your drone as well as the people and objects around you.
Multiple drones flying in the same place can lead to collisions. You must ensure that the area is large enough to allow all drones to fly within it.
It is also important that pilots have a direct line of sight around their drones.
To minimize interference between remotes, it is important to keep at least 10 feet from other drone pilots.
As we have discussed, pilots should not be using high-powered remotes to control their drones or using parabolic reflectors. Any drone entering the focused beam range could easily get confused and channel hops to another channel.
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We have covered everything you need about flying two drones simultaneously in this article.
Your drone must remain connected throughout the flight. You can reduce it by being away from other drone pilots and choosing a channel that is not busy. Also, you should limit the number of drones you fly at once, if possible if your drone uses the 2.4 GHz frequency.
Many other problems can be solved by switching to 5.8 GHz.
Happy drone flying!