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FLY FURTHER



Wi-Fi is most often used to create Wireless Local Area Networks due to its high transmission speed and low cost. Many drone companies also use Wi-Fi for their video transmission systems, claiming that they can achieve 720p HD video transmission with ranges of up to 0.6mi (1km). Sometimes people enhance Wi-Fi signal strength using directional antennas that increase the radiation intensity of the antennas in a specific direction to make up for the weak Wi-Fi data link. Theoretically this allows videos to be transmitted from several kilometers away, but drones have to fly within the direction of the enhanced antennas, which limits flight freedom. But Wi-Fi connections can be easily interrupted by nearby Wi-Fi networks and, once lost, are difficult to restore. The loss of a connection causes an aircraft to either hover or return home, which may result in safety hazards.



In drone technology, Wi-Fi transmission has four main drawbacks.

1. The Wi-Fi protocol was designed to connect electronic products wirelessly on a local area network, so long range transmission was never a consideration. The technology is low-cost, with a simple signal design, but this results in compromised performance at long ranges. Not only that, the Wi-Fi protocol was made ten years ago. While new versions have come out, limitations in compatibility and cost of even the most updated version results in compromised performance.



2. Multiple devices can be connected to a network through Wi-Fi, but as access is random and asynchronous, channel utilization is low. Additionally, in order to include multiple devices in the network, Wi-Fi technology uses a very conservative interference management strategy. While claimed Wi-Fi transmission speeds are high, average transmission speed for each device is actually very low.



3. The Wi-Fi protocol stack does not communicate frequently with physical layers, causing it to fail often responding to changes in the communication channel. When flying in areas where channels are forced to change frequently, there may be a lot of latency in the video transmission.



4. Wi-Fi technology uses a protocol stack that includes multiple layers to make it compatible with different devices. This means it takes time to build communication links. If used as a video transmission system for drones, when the aircraft loses connection with the controller you will have to wait for a few seconds or even longer for the Wi-Fi to rebuild the communication link, even if the channels are clear.



As a result of the analysis above, it was decided that Wi-Fi video transmission technology was not suitable for the Mavic, and the new OcuSync system was selected instead. and uses the brand new OcuSync instead. This new member of the Lightbridge family performs far better than Wi-Fi and other transmission systems, no matter at what speed the radio wave travels. OcuSync also uses a more effective digital compression technology and channel transmission technology, allowing it to transmit HD video reliably even in environment environments with strong radio interference.



Compared to the traditional Analog Transmission, OcuSync can transmit video at 720p and 1080p, equal to an image quality increase of 4-10 times without color casts, static interference, flickering or other problems associate with analog transmission. Even when using the same amount of radio transmission power, OcuSync’s transmission distance is further than analog at 4.1mi (7km).



OcuSync goes even further than optimizing the communication mechanism and parameters aerial imaging. There are several video transmission systems on the market claiming to offer video transmission with zero latency, but it should be noted that the physical layer of those transmission systems is too simple to adapt to changes in the environment. When affected by signal interference, the image quality of the video being transmitted will fall sharply. This means these systems are not suitable for far field transmission and transmission in interference heavy environments. Also, because these video transmission systems are not integrated into the whole system, latency will immediately start to rise up from 0 when working with devices including cameras and displays. OcuSync is able to strike a perfect balance between latency and receptivity. By reducing latency to 5ms for remote controller transmission commands, 10ms for video data and 130ms for videos. More than enough to ensure that Mavic is able to fly reliably despite interference. OcuSync’s integration with video processing and coding, signal transmission systems also make it more cost effective. Before taking off, OcuSync will automatically scan the environment and choose the frequency band with the lowest interference, ensuring more stable video transmission. During flight it sends key flight parameters back for viewing in the DJI GO app, and supports a maximum download speed of 40Mb/s for photos and videos.



As well as point-to-point video transmission, OcuSync also supports wireless connections to multiple devices. For example, you can connect the DJI Goggles, remote controller and Mavic wirelessly to OcuSync at the same time. You can also add an additional remote, so that you can control the Mavic with two remotes or share FPV videos.



Upto 40Mbps OcuSyncFLY FURTHERWi-Fi is most often used to create Wireless Local Area Networks due to its high transmission speed and low cost. Many drone companies also use Wi-Fi for their video transmission systems, claiming that they can achieve 720p HD video transmission with ranges of up to 0.6mi (1km). Sometimes people enhance Wi-Fi signal strength using directional antennas that increase the radiation intensity of the antennas in a specific direction to make up for the weak Wi-Fi data link. Theoretically this allows videos to be transmitted from several kilometers away, but drones have to fly within the direction of the enhanced antennas, which limits flight freedom. But Wi-Fi connections can be easily interrupted by nearby Wi-Fi networks and, once lost, are difficult to restore. The loss of a connection causes an aircraft to either hover or return home, which may result in safety hazards.In drone technology, Wi-Fi transmission has four main drawbacks.1. The Wi-Fi protocol was designed to connect electronic products wirelessly on a local area network, so long range transmission was never a consideration. The technology is low-cost, with a simple signal design, but this results in compromised performance at long ranges. Not only that, the Wi-Fi protocol was made ten years ago. While new versions have come out, limitations in compatibility and cost of even the most updated version results in compromised performance.2. Multiple devices can be connected to a network through Wi-Fi, but as access is random and asynchronous, channel utilization is low. Additionally, in order to include multiple devices in the network, Wi-Fi technology uses a very conservative interference management strategy. While claimed Wi-Fi transmission speeds are high, average transmission speed for each device is actually very low.3. The Wi-Fi protocol stack does not communicate frequently with physical layers, causing it to fail often responding to changes in the communication channel. When flying in areas where channels are forced to change frequently, there may be a lot of latency in the video transmission.4. Wi-Fi technology uses a protocol stack that includes multiple layers to make it compatible with different devices. This means it takes time to build communication links. If used as a video transmission system for drones, when the aircraft loses connection with the controller you will have to wait for a few seconds or even longer for the Wi-Fi to rebuild the communication link, even if the channels are clear.As a result of the analysis above, it was decided that Wi-Fi video transmission technology was not suitable for the Mavic, and the new OcuSync system was selected instead. and uses the brand new OcuSync instead. This new member of the Lightbridge family performs far better than Wi-Fi and other transmission systems, no matter at what speed the radio wave travels. OcuSync also uses a more effective digital compression technology and channel transmission technology, allowing it to transmit HD video reliably even in environment environments with strong radio interference.Compared to the traditional Analog Transmission, OcuSync can transmit video at 720p and 1080p, equal to an image quality increase of 4-10 times without color casts, static interference, flickering or other problems associate with analog transmission. Even when using the same amount of radio transmission power, OcuSync’s transmission distance is further than analog at 4.1mi (7km).OcuSync goes even further than optimizing the communication mechanism and parameters aerial imaging. There are several video transmission systems on the market claiming to offer video transmission with zero latency, but it should be noted that the physical layer of those transmission systems is too simple to adapt to changes in the environment. When affected by signal interference, the image quality of the video being transmitted will fall sharply. This means these systems are not suitable for far field transmission and transmission in interference heavy environments. Also, because these video transmission systems are not integrated into the whole system, latency will immediately start to rise up from 0 when working with devices including cameras and displays. OcuSync is able to strike a perfect balance between latency and receptivity. By reducing latency to 5ms for remote controller transmission commands, 10ms for video data and 130ms for videos. More than enough to ensure that Mavic is able to fly reliably despite interference. OcuSync’s integration with video processing and coding, signal transmission systems also make it more cost effective. Before taking off, OcuSync will automatically scan the environment and choose the frequency band with the lowest interference, ensuring more stable video transmission. During flight it sends key flight parameters back for viewing in the DJI GO app, and supports a maximum download speed of 40Mb/s for photos and videos.As well as point-to-point video transmission, OcuSync also supports wireless connections to multiple devices. For example, you can connect the DJI Goggles, remote controller and Mavic wirelessly to OcuSync at the same time. You can also add an additional remote, so that you can control the Mavic with two remotes or share FPV videos.Upto 40Mbps