Optimal code generation and decoding method based on photon counting lidar

• Main Authors: WANG SHUCHAO, LI ZHE, SU XIUQIN, ZHU WENHUA, ZHANG ZHANPENG, HAO WEI, CHEN SONGMAO
• Format: Patent
• Language: Chinese; English
• Published: 23.03.2018
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC DIGITAL DATA PROCESSING; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses an optimal code generation and decoding method based on a photon counting lidar. The method comprises the steps that an initial particle group is randomized according to a given code length, the number of particles and an intensity range; a fitness function is designed according to the requirement of the photon counting lidar on coding, and the fitness of each particle is calculated; each particle is evolved by the iterative evolutionary formula of a particle group algorithm, and the particle with the highest fitness is recorded; the evolutionary step is repeated untilthe maximum evolutionary algebra or stop criteria set in advance is met; the acquired optimal code is applied to lasing modulation; the received code is acquired through a receiving system; and a fastFourier transform algorithm is used to correlate a transmission code and the received code to acquire the target distance information. A pseudo-random sequence which satisfies the requirement of thephoton counting lidar and i