Electrical Engineering Department
BS in Electrical Engineering
Xiao-Hua (Helen) Yu
Direct-sequence spread spectrum (DSSS) is a modulation technique that has been used in many telecommunication devices. Unlike the case of a single frequency carrier, the modulated signal in DSSS occupies a much wider bandwidth in order to reduce the possible interferences with narrow band communication signals. Considering the fact that spread spectrum is generally used to resist jamming, there are very few documented techniques or methods on jamming spread spectrum signals
In this project, we attempt to jam a remote control (RC) car (manufactured by Traxxas) that employs DSSS. The multichannel transmitter of a Sony camera is used as a jammer. Experimental results show that our attempt is successful in a limited range of distance. A directional antenna can be added to improve the range of jamming for future works. It is expected that this method can be further applied to jam mini unmanned aerial vehicles (UAVs) that may potentially be used as explosive or biological weapons targeted at civilian populations.