The Research Of Key Technology Of Millimeter Wave Seeker And Its Application In Engineering

Millimeter wave seeker has many advantages, such as small in size, light in weight, high precision, anti-interference, anti-stealth and so on. And it is one of the key issues researched by main forced military countries. Millimeter wave seeker's crucial signal processing algorithms and their application in practical project have been researched under project background. The main contents as follows:(1) Working principle of Millimeter wave seeker is summarized. Firstly, the stepped frequency signal is analyzed. Then, the realized method of high-resolution range profile which is achieved through conventional inverse fourier transform is introduced.(2) The application in practical project of Millimeter wave seeker's crucial signal processing algorithms is researched. Firstly, compensation of poor coherent of source is researched. The reason of poor coherent and its affect for high-resolution range profile are analyzed. And the compensation algorithm is researched in detail and applied to practical project. The result is well. Then, real-time compensation of velocity for high-resolution range profile is researched. The Time-domain correlation method which is used in millimeter wave seeker regularly is optimized, making its range larger and more accurate. And its result is well. Finally, range mismatched redundancy and over-sampling redundancy in high-resolution range profile and conventional algorithms for redundancy processing are researched.(3) The application of angle tracking is researched. Two main factors (high-frequency amplitude and phase errors and mudium-frequency amplitude and phase errors) which can affect the angle measuring are analyzed. Then, conventional compensatory algorithms of mudium-frequency amplitude and phase errors and their verification are analyzed. According to the actual project results confirm angle tracking algorithm.(4) The debugging of the system are researched. Firstly, the overall composition of the system is introduced. In the part, the working circuit and real-time communication of signal processing system and Display-Control system are researched and realized. Then the key debugging method of system (three-channel amplitude and phase error measurement and servo zero drift test and S curves test) is studied and realized. GPS systems are needed in the experiment, so the communication of Display-Control system and GPS system is studied and realized.