To analyze factors that affect the detection probability of six laser range-finders of rotating rocket,taking a missile as the target,the detection model was established according to a detection mechanism.Based on the...To analyze factors that affect the detection probability of six laser range-finders of rotating rocket,taking a missile as the target,the detection model was established according to a detection mechanism.Based on the model,the detection probability was calculated via Monte Carlo method under different conditions.With the calculation results,the relationship of detection probability with the rolling rate and the missile velocity was illustrated in figures,when the laser emitting frequency was 10 kHz,20 kHz,30 kHz respectively under the condition that rocket met the front of missile as well as the condition that rocket met the rear of missile.The figures show that the detection probability increases as laser emitting frequency increases or the rolling rate increases,while it decreases as the missile velocity increases.Detection probability is higher when rocket meets the front of missile than that when rocket meets the rear of missile.In order to maintain a track of approaching Mach 2 targets,rotation rate should be more than 100 r/s.展开更多
According to the theory of laser triangulation measurement,it can be used to test not only plane but also curving surface profile. As a non-contact measurement of optic-electro on a single spot,its advantages are high...According to the theory of laser triangulation measurement,it can be used to test not only plane but also curving surface profile. As a non-contact measurement of optic-electro on a single spot,its advantages are high measurement speed,high precision,great anti-jamming,small measurement spot,easy operation,wide application range and so on. Laser triangulation measurement based on PSD makes system perfect with small volume,high sensitivity,low noise,high resolution. The system’s precision is above 0.5%. It shows that with simpler specified PSD software it can be found a convenient way to optimize system design,improve reliability,shrink volume,reduce power and shorten exploitation period.展开更多
文摘To analyze factors that affect the detection probability of six laser range-finders of rotating rocket,taking a missile as the target,the detection model was established according to a detection mechanism.Based on the model,the detection probability was calculated via Monte Carlo method under different conditions.With the calculation results,the relationship of detection probability with the rolling rate and the missile velocity was illustrated in figures,when the laser emitting frequency was 10 kHz,20 kHz,30 kHz respectively under the condition that rocket met the front of missile as well as the condition that rocket met the rear of missile.The figures show that the detection probability increases as laser emitting frequency increases or the rolling rate increases,while it decreases as the missile velocity increases.Detection probability is higher when rocket meets the front of missile than that when rocket meets the rear of missile.In order to maintain a track of approaching Mach 2 targets,rotation rate should be more than 100 r/s.
文摘According to the theory of laser triangulation measurement,it can be used to test not only plane but also curving surface profile. As a non-contact measurement of optic-electro on a single spot,its advantages are high measurement speed,high precision,great anti-jamming,small measurement spot,easy operation,wide application range and so on. Laser triangulation measurement based on PSD makes system perfect with small volume,high sensitivity,low noise,high resolution. The system’s precision is above 0.5%. It shows that with simpler specified PSD software it can be found a convenient way to optimize system design,improve reliability,shrink volume,reduce power and shorten exploitation period.
