# Moving Ad Hoc Networks--A Comparative Study
## 4 Flying Ad-Hoc Network (FANET)
At present, there are a lot of companies focusing on front-end data collection in the market, and the cost of pure data collection is getting lower and lower, but there are not many companies capable of back-end data processing and industry-combined applications, and the front and back ends are fighting each other. This leads end-users not only to ensure that the quantity and quality of data collection meet business needs but also to consider multi-party cooperation, thereby increasing a lot of the costs and communication barriers. * Speed up: Different types of drones can be used in different scenarios based on their characteristics. For example, the advantages of fixed-wing UAVs are long battery life, fast cruising speeds and a strong load capacity, which can be applied to high-speed, heavy-load, large-scale, and long-distance mission types, such as aerial surveying and mapping. Rotary-wing UAVs are characterized by strong maneuverability and being capable of vertical take-off and landing and hovering. They are mainly suitable for mission types with low altitudes, low speeds, and vertical take-off and landing and hovering requirements, such as post-disaster search and rescue. * Small radar: The radar cross-section of a multi-UAV system is very small, rather than a larger radar cross-section, which is very important for military applications. * Mission completion time: With many drones, surveillance, reconnaissance, and search operations can be carried out quickly. If a single drone cannot perform the mission, the mission cannot successfully compete. However, in the multi-drone system, if the drone takes off, the mission can survive with other drones. Although multiple unmanned aircraft systems have several advantages over individual unmanned aircraft systems, because of the dynamic network topology, communication of two far nodes are unique a challenging issue. Table 3 shows the limitations and advantages of using multi-UAV and single UAV. (c) Characteristics of FANETs. One characteristic of FANETs is that they are light and compact; this not only means that the drone fuselage is evolving towards disappearance and miniaturization but also that the development of new aerial materials will greatly enhance the flexibility and comfort of the drone. Figure 9: Flying Ad-Hoc Network (FANET). The second, is integration. To enhance their versatility, drones are evolving in the direction of system integration and comprehensive sensing. During the construction of multi-mission aircraft, the interaction and integration of UAVs with other platforms such as manned aircraft and ground monitoring stations have been enhanced. The third, is customization. UAVs will be able to meet the specific needs of users and are more flexible and maneuverable. Creating an exclusive drone is no longer a dream. The fourth, is intelligence. In the future, drones will not only play the role of transport platforms and passively complete various flight missions; they will also be smart partners with various capabilities such as effective governance, data logging, additional analysis, and collaborative operations. With the continuous improvement of their intelligence level, the drones will also achieve automatic data collection and smart learning. At the same time, the combination of drones, AR and VR devices will greatly improve drone flight and control modes. In short, industrial-grade UAV users should actively learn and adhere to the relevant policies and regulations, regulate the development status of the drone business, effectively adopt new technologies and think about how drones can improve their business. The unmanned aircraft market has gradually declined, and the development has become quieter. This is an important opportunity for all parties to re-plan the future application of unmanned aircraft. We recommend that industrial users take a long-term view based on an in-depth understanding of the characteristics of the UAV, assess the situation, learn from experience and lessons, and make rational business judgments.