# Introduction n UAV is an aerial aircraft with no onboard pilot. It can be RC (Remote Controlled) or can be controlled autonomously whether using preprogrammed plans or dynamically complex control systems [1]. As UAVs are free from the burden of physiological limitations caused by human pilots, they can be designed for maximum on-station times. They are mainly used for surveillance, reconnaissance [10] and penetration of hostile territory without the deployment of human beings in areas of high risk. Now-a-days, motorvehicles, farming and mining equipment, and many varieties of land-based vehicles are equipped with GPS based navigation system [8].As per recent technologies used a vehicle tracking system was designed for making a smart farm in the framework of precision agriculture by employing the GPS and Zigbee wireless network including software for acquiring data from the vehicle, storing and displaying it in real time on a web site. [2]. System was employed as tractor tracking system based on mesh topology to cover the large area and data is collected from the tractor [3]. Using 32 bits LPC2220 microprocessor of ARM7, and muC/OS-II real-time embedded operating system, GPS with Zigbee a record system is designed that can provide precise synchronization among instruments and also position the fault, and also allow communication among instruments [4]. The DDAU (Distributed Data Acquisition Unit) used in three-dimensional electromagnetic exploration targeted for oil and gas (hydrocarbon) detection, is composed of data acquisition and DSP module, embedded control module, GPS sync and timing module, and power supply module. The embedded control module includes ZigBee OEM board, temperature sensor, Ethernet, 4 UARTs, 4 SPIs, 2 SSCs, 8 GB NAND flash and 8 MB NOR flashes, is based on AT91RM9200 and Linux 2.6 [5]. With the advancement in technology an enhancement scheme for GPSsignals received on an unmanned aerial-vehicle helicopter system is introduced where using Kalman filter the smooth and accurate signals are generated for automatic flight control systems [6]. A Real-time Aerial Monitoring System performing the rapid mapping in an emergency situation using the position/attitude information obtained from GPS/IMU is used to perform the aerial triangulation without GCPs. The positions and attitudes of GPS/INS integration with the solution from AT in regular intervals are updated. The GPS/IMU/Image data for an UAV-based aerial monitoring system is simulated and compared with the result of GPS/INS/AT with and without updates from AT [7]. In this paper we are representing an aerial system which can fly in the air based on the decisions and directions decided by the person sitting on the ground to make it move on a concerned path to fulfill the target. Here we are focusing on the wireless navigation system which can control the system during its flight. First we are preparing a database which contains the GPS values of different locations which are traversed frequently. This database is included in the program code. Whenever change in the position of the vehicle is required a command is send from the control room and then vehicle will continuously check the GPS value of that particular location where it has to reach. When the value matches with the stored GPS value that becomes its destination.Here we have designed a network with its hardware design. This module is designed using center tapped 9-0-9 transformer [9] to step down the AC voltage, 1000uf/35V electrolytic capacitor which is used as a filter circuit, IN4007 diodes used to form a bridge rectifier to convert AC to DC, 7805 regulated IC to obtain a 5V at the output of the regulator, 330? resistor and a LED as an indicator. These components are mounted to obtain 5V, 500mA of power supply to drive our whole protocol. ii. Embedded Microcontroller There is a whole wide range of controllers available in the market. But this particular project is developed using AVR series of microcontroller (ATMEGA16) because of its inbuilt USART and its variable frequency. ATmega16 is a low-power CMOS 8bit microcontroller based on the AVR RISC architecture [11]. By executing powerful instructions in a single clock cycle, the ATmega16 achieves throughputs approaching 1 MIPS per MHz, allowing the system designed to optimize power consumption versus processing speed. Further it also minimizes the cost of this personal area network. iii. Transmitting module It is a low power, low cost 2.4 GHz transceiver designed for wireless applications. The ZigBee is designed for the 2400-2483.5 MHz ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency band. This is the radio frequency receiver module, through which OEM designers can design the remote control applications in the fastest way. The circuit is designed with SMD components and the module size is small enough that can be used for all types of applications. The modules are using IC CC2500 made by Texas Instrument. # iv. GPS (Navigation module) The GPS is actually a constellation of 27 Earthorbiting satellites (24 in operation and three extras in case one fails). GPS is widely characterized as satellite navigation or a satellite positioning system, providing signals for geo location and for safe and efficient movement, measure, and chase of individuals, vehicles, and different objects anyplace from the earth's surface to celestial orbit in house. # v. USART The USART is additionally called a Serial Communications Interface or SCI. The USART are often configured as a full duplex asynchronous system that may communicate with peripheral devices like CRT(Cathode Ray Tube) terminals and private computers, or it are often con figured as a half -duplex synchronous system that may communicate with peripheral devices like A/D or D/A integrated circuits and Serial EEPROMs etc. The components used under this section are described below: i. Power Supply Unit: It is same as described above. ii. Zig Bee Module: It is same as explained above in transmitting section iii. Display Module The LCD LM016L (16x2) is interfaced with AVR microcontroller to display the data information. The data pins of LCD i.e., 11,12,13,14 are connected to port C (PC0 through PC3) of the AVR microcontroller. The control pins of LCD 4, 5, 6 i.e., Register-select (RS), Read/write(R/W) and enable respectively, are interfaced with PD6, PD5 and PD7 of the AVR microcontroller, severally. R/W pin is keep for good low to place the digital display into writing mode. This unit receives character codes (8 bits per character) from a chip or PC, latches the codes to its show knowledge RAM (80-byte) Doctor of Divinity RAM for storing eighty characters, # Software Development The software development of designed system is used to get integration and functionality. Here, 'C' language is used to develop the program to drive the system designed and AVR studio4 is used as compiler (WINAVR is running in backend). AVR studio4 software is free firmware for Windows and Linux operating systems. To get the result of wireless personal area network application, the microcontroller has been programmed, which involved the following steps. # b) Compiling After collecting the program, it's regenerate to machine level language within the sort of 0's ans1's.This file is named because the Hex file and is saved with the extension (.hex). The compiler additionally generates errors within the program that ought to be removed for correct execution of the program. The Program is compiled after removing all the errors generated. # c) Burning Burning the machine language (hex) file into the microcontroller's program memory is achieved with a fervent engineer, thatis attached to a PC's peripheral. PC's port has been used for the aim. # d) Evaluation The system performs as desired by the user and performs all the tasks expeditiously and effectively the code development section is over and therefore the project is prepared to be put in in any of the economic sites as a private space network. If not, the whole method is perennial once more to rectify the errors. In the programming of the proposed system is used the following .c and .h file. # Conclusion & Future Scope Both the hardware and software system was tested with real time data and accurate values of the positions were recorded. This system as compared with other traditional manual inspection is more accurate since it increasesthe accuracy of data acquisition by using nonlicensed Zigbee protocolwhich also supports real-time transmission. Also, its operation is flexible since its flight can be controlled from ground station by the designed hardware platform. Themeasurement is accurate (accuracy in position-5 meters, accuracy in velocity-.1m/s,accuracy in time: 0.1 s). The operation is simple and power consumption is also low (12V/750mA)and it iscost effective also because of using non licensed band.Being wireless it also reduces the complex wiring system. Here, a personal area wireless network is designed and implemented. This can be used for surveying at emergency situations like pipeline damages etc. Further if system is carrying payload then in that case it can be used for transferring the load as per the changes in plans. ![of this system basically consists of two parts: Transmitting node and Receiving node. a) Transmitter Node The components of this section are explained below: i. Power Supply Module](image-2.png "") 1![Figure 1 : Block Diagram of Transmitting Node b) Receiving Node](image-3.png "Figure 1 :") ![code into a 5*7 dot-matrix character pattern, and displays the characters on its digital display screen.](image-4.png "") 2![Figure 2 : Block Diagram of Receiving Node III.](image-5.png "Figure 2 :") 3![Figure 3 : Steps for Software Development a) Coding / Debugging Coding or debugging is one in a high-level language (such as C or java). Compiler for a high level language helps to reduce production time. To program the microcontrollers Win AVR was used using C language. The source code has been commented to facilitate any occasional future improvement and maintenance. Win AVR is a suite of executable, open source software development tools for the Atmel AVR series of RISC microprocessors hosted on the Windows](image-6.png "Figure 3 :") 4![Figure 4 : Simulation Model on Proteus](image-7.png "AFigure 4 :") 56![Figure 5 : Extracted values of GPS through Proteus Model This figure is showing all the values of GPS displaying on virtual terminal through Proteus model. The GPS values are simply transferred through USART using microcontroller and through COM port displayed on virtual terminal.](image-8.png "Figure 5 :EFigure 6 :") 7![Figure 7 : View of hardware AVR programmer (ISP) by Robokits](image-9.png "Figure 7 :") © 2013 Global Journals Inc. (US) Global Journal of Computer Science and Technology © 2013 Global Journals Inc. (US) ## Acknowledgement The authors are thankful to the administration of the UPES, Dehradun for their support in implementation of the work. * Autonomous Navigated Global Positioning System Based Surveillance Unmanned Aerial Vehicle AbdulQayyum MoonaMazher ITEE Journal 1 * Real-time monitoring of GPS-tracking multifunctional vehicle path control and data acquisition based on Zigbee multi-hop mesh network GAngel ABrindha International Conference on Recent Advancements in Electrical, Electronics and Control Engineering (ICONRAEeCE) 2011 * Real-time monitoring of GPStracking tractor based on Zig Bee multi-hop mesh network NWatthanawisuth NTongrod TKerdcharoen ATuantranont International Conference on Electrical Engineering/Electronics Computer Telecommunications and Information Technology (ECTI-CON) 2010 * Design of Data Acquisition and Record System Based on Zig Bee and GPS Hualichen; Zhifan Feng Workshop on Computational Intelligence and Industrial Application 2008 PACIIA '08. 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