An ultrashort 10-GHz pulse generation scheme was successfully demonstrated using a bulk material InGaAsP electroabsorption modulator to generate the seed pulse. A self-phase modulation-based reshaper was used after the adiabatic soliton compression in a comb-like dispersion profiled fiber. Experimen...

To estimate the angle of arrivals (AOA) of wideband chirp sources, a new time-frequency algorithm is proposed. In this method, virtual sensors are constructed based on the fact that the steering vectors of wideband chirp signals are linear and vary with time. And the randon Wignersville distribution...

A new long term integration algorithm is proposed for high-dynamic targets, which can resolve the problems of spectrum spread, frequency walk and pseudorandom noise (PRN) code phase curvature caused by the motion of targets. This algorithm first applies a keystone transform based improved discrete p...

The basic scheme of the orientation detection system using L-shape reticle is introduced. The dimension of the patterns on the reticle of the system in practical applications is designed and an analysis of the principle of abstracting the orientation information of the target and the effects and for...

A laser ultrasonics generation and non-contact detection system has been developed. The weak generated ultrasonic signal of nanosecond duration and nanometer amplitude can be detected with a confocal Fabry-Perot interferometer (CFPI). It can be applied to determination of elastic constants of materi...