Here are some technologies you could consider to help make the drones more viable.

One way to enhance drone stealth include acoustic dampeners and stealth coatings to significantly decrease noise and visibility. Slowing propeller speed also minimizes noise for maximum discretion. You can minimize the drone's radar signature through specialized aerial structures and sophisticated flight controls developed to avoid radar detection. Integrating 3D-printed propellers and affordable LIDAR sensors enables quieter operation and improved obstacle avoidance in a cost-effective production method. Precise navigation relies on advanced RTK GNSS and GNSS-INS systems, including specialized GNSS chips and positioning modules that maintain accuracy even with potential signal interference.