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A laser range finder used the technique of heterodyne detection and pseudorandom phase modulation is proposed. The detail principle of the detection system is presented. Simulation results show that 34.6 dB signal to noise ratio can be achieved under the laser transmit power of 0.1W, pulse length of 82us, telescope aperture of 0.1m, local oscillator power of 1mW, target distance of 100m. And the system...
In this paper, a new approach to construct LDMC codes is introduced. The new codes can be encoded efficiently at the transmitter side and support both of the inner-iterations and outer-iterations at the receiver side. Furthermore they can achieve the design rates and perform very well over MIMO channels.
A novel morphological edge detection based on adaptive weighted morphological operators is presented. It judges plane edge and direction by adaptive weighted morphological structuring elements (SE). If the edge direction exists, a big weight SE is put; if doesn't exist, a small weight SE is put. Thus we can achieve an intensified edge detector. Experimental results prove that the new operators' performance...
Multiple-access interference (MAI) is concerned widely as one of the most important problems in CDMA system. Most existing researches are under the Gaussian noise assumption, which is not coincident with the real situation. Actually, the more impulsive is the noise, the more severe is the performance degradation incurred by the conventional detectors. This paper proposes a novel robust blind multiuser...
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