Patent ID: 7817080
Filing Date: 2010-10-19
Classification: G01S,H04L

Abstract:
1. A ranging and communication multifunction system, comprising: a signal generating device that generates a predetermined impulse signal, and modulates data by using a Pulse Position Modulation (PPM) impulse; a carrier wave modulating device that up-converts the impulse signal by a predetermined carrier wave so as to generate a transmission signal; a transmission antenna that transmits the transmission signal; a receiving antenna that receives a signal in which the transmission signal is reflected by a physical object and arrives again; an amplifying device that amplifies the receiving signal received by the receiving antenna; a wave detecting device that detects an impulse signal from an output of the amplifying device; and a receiving circuit that performs a predetermined processing by inputting the impulse signal detected by the wave detecting device, the receiving circuit including a ranging device and a communication device, the ranging device including an analog-to-digital converter and a plurality of range bins, the communication device including a high speed comparator and a digital-to-analog converter, the ranging device and the communication device being processed in parallel, wherein an amplitude of the pulse signal detected by the wave detecting device is converted into a digital value by the analog-to-digital converter at every predetermined timing, is sampled to each of the range bins, and from among the sampling values of the range bins, a distance is calculated from the range bin which becomes a maximum, and the impulse signal detected by the wave detecting device is compared with the output of the digital-to-analog converter by the high speed comparator so as to be binarized, thereby performing data demodulation.