Jammer to interrupt drone performance
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Particularly spectacular were the New Year's celebrations in Shanghai this year, including a performance carrying 2,000 drones.
The glowing drone forms a variety of images, including colorful shapes, a person running across the sky, and numbers that count from seconds to midnight.
Over the past year, Shanghai, in fact most of China's coastline, has repeatedly experienced UAV jammer and deceptions.
Additionally, previous drone shows in China have all been disrupted by navigation signals. Chinese media reported one incident in May 2018 and another in October of the same year.
Considering this story and the success of this year's exhibition, many people believe that the Chinese government needs to make a conscious decision to avoid disrupting activities during the festival.
Others believe that GPS spoofing may still be in progress, but these drones use China's Beidou satellite navigation system.
It may interfere with GPS without affecting Beidou. However, this would be a riskier option, as the two systems operate on close frequencies and “overflow” signal blocker can occur.
China recently announced that it will pay more attention to providing PNT information to its people from multiple sources in a "comprehensive" framework. This method ensures that regardless of the interference of the satellite signal, users can get the key location and timing information they need.
Given this management's concern, the need for clear navigation may have been fully taken into account prior to the recent Shanghai UAV exhibit.
Additionally, we may not see many reports of drone display disrupted in China due to a failure of the navigation system.