Low Cost Analog Video Transmission Security of Unmanned Aerial Vehicle (UAV) based on Linear Feedback Shift Register (LFSR)

The security of video transmission in Unmanned Aerial Vehicle (UAV) become noteworthy since the UAV broadly used for military purposes to protect confidential information from unauthorized person. The confidentiality of information becomes an important thing because UAV hijacking occurs quite frequently. We develop an analog video transmission security for UAV with image encryption process by using Pseudo-Random Number Generator and assembling random image pieces with Linear Feedback Shift Register algorithm. The points to this security are the LFSR used as a seed that acts like a key to set the pattern of randomization from the images captured by the camera and processed by software on Raspberry Pi which is all mounted on UAV. The randomized image is sent using Analog Video Transmitter. The decryption is done on the ground station. The image result that received using a video receiver is decrypted using Raspberry Pi equipped with video grabber. In the experiment, we compared the similarity level between the original, scrambled, and decrypted images. It has 3.94 Percent similarity between original and scrambled images, 98.24 Percent similarity between original and decrypted images, and has 2.2 seconds latency.