Abstract
A measurement method for the wavelength and incident angle of narrow pulsed laser based on sinusoidal Transmission Grating and Digital Signal Processor has been proposed in this paper, and the corresponding principle prototype of laser warning receiver has been designed, this instrument consists of a sinusoidal transmission amplitude grating, a plantconvex cylinder lens, a linear CCD with 50MHz driving frequency made by ATMEL Company, a High speed DSP TMS320VC5509 and a liquid Crystal Screen. our experiment results show that this instrument has the following technical characteristics: measurement wavelength range(span) is from 500 to 1100nm, wavelength resolution is less than or equal to 10nm, the Field of View is 22.5° in latitude or longitude, the incident angle resolution is about 1, the responding time to laser threat is less than 0.1s, the detecting sensitivity is less than 10mW/cm2.