# Performance Evaluation of Multi-UAV Network Applied to Scanning Rocket Impact Area +
## 7 Conclusions and Future Work  
This work has presented results on the specification of a communication network architecture for a multi-UAV system for scanning the impact area of rockets launched from CLBI in order to detect invasive boats in an exclusion zone established during the launch chronology. The main features of the mobile FANETs have been properly addressed. Despite recent advances in studies regarding communication networks applied to multi-UAV systems, it has been demonstrated that there is no general network architecture that meets the requirements and characteristics of all existing applications.  
In the specific case of applications associated with scanning the rocket impact area, which have very specific characteristics such as propagation and attenuation of radiofrequency signals on the sea surface, the challenge is even greater. A hardware and software architecture to support the communication network is currently incorporated into a squadron. With such infrastructure, experimental tests will be carried out to validate the proposed approach.  
Tests were performed using the scanning strategy without area decomposition. In order to validate the proposed strategy, a network architecture based on ZigBee technology was defined. For this purpose, different scenarios and configurations were adopted to analyze the network performance when transmitting a 100-kB image. The network presented stable behavior while transmitting the image with a baud rate of 115,200 bps within an average time interval of 67 s. During 100% on the test where the failure occurred, the results clearly denote that the network is capable of reorganizing itself and maintaining data transmission with success rates higher than 99%. Since in such type of application the FANET is required to transmit an image with reliable data to confirm the detection of a boat even when data transmission fault occurred, the experiments carried out in this work allow concluding that the network is a reliable fault-tolerant, fulfilling the necessary requirements satisfactorily.  
The next steps of the project include additional tests to increase the amount of data, as well as the development of a hardware and software architecture associated with interpixel redundancy for image reconstruction in cases of packet loss.  
Conceptualization: M.R.S., E.S.S., P.J.A. and M.B.N.; Methodology: M.R.S., E.S., P.J.A., D.L., D.S.P., F.H.C.J., M.R.M. and M.B.N.; Writing--review and editing: M.R.S., E.S.S., P.J.A., D.L.L., M.R.M., D.S.P., L.B.P.N., F.H.C.J., M.B.N., A.A.D.M., G.L.A.A. and J.B.D.D.; Project administration: P.J.A., A.A.D.M., M.B.N., G.L.A.A. and J.B.D.D.  
This study was financed in part by the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior--Brasil (CAPES)--Finance Code 001, from the Federal University of Rio Grande do Norte (UFRN), Graduate Program in Electrical and Computer Engineering (PPgEEC). CNPq (National Council of Technological and Scientific Development) Chamada MCTI/CNPq/CT-Aeronautico/CT-Espacial N\({}^{\circ}\) 22/2013--Apoio ao Desenvolvimento Cientifico, Tecnologico e de Inovacao no Setor Aeroespacial.  
The authors acknowledge AEB (Brazilian Space Agency).  
The authors declare no conflict of interest.