The Research About Short Distance Wireless Communication Technique Based On DSP

The inertial navigation system is needed in the development of navigation, aviation and spaceflight. Communication system is one of the most important part in the data transmission of inertial alignment, the veracity, anti-interference and secrecy of which has an impact on the navigation, especially for data transmission between the aircraft carrier and carrier plane. Usually the cable is used to transmit data for the reliability and security between airplane and benchmark information source. Since the modern warfare require beating the adversary rapidly and exactly and the cable is disadvantageous, a new substitute for cable is sought, thus the wireless communication technology is the preferred. There are many kinds of wireless communication technology, so which to be used is the key of data transmission. Through comparing many schemes, we select the Bluetooth technology to communicate the data, but there are many deficiencies in our system. In this context, the paper develop a new wireless data communication system using the Bluetooth technology as a prototype based on DSP(Digital Signal Processor).DSP based wireless data communication is one kind of the realization method, the fundamental of which is like as the Bluetooth technology, except the baseband processing and control module using DSP, radio frequency using PTR2000 module. The analog signal part of the system is realized by PTR2000, and the digital signal part including channel selection, channel filtration, coding, equilibrium, power control, is all realized by software. Simulation experiment reveals that the system has the advantage of high precision, good secrecy, and utmost anti-interference.Wireless data transmission is not a new conception, but the use of DSP as a baseband processing and control execute component does not begin until recent decades. As a special digital signal processor, DSP is effective, high speed andprecision. The paper design hardware circuit and software, using TMS320C5402 chip as a core. The experiment result shows the system is good.