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Due to seeker delay and coupling with body motion, a strapdown seeker has not been widely used for missiles though it makes the missile cost cheaper. In this paper, a homing loop design based on PID controller for missiles with a strapdown seeker is suggested. The PID controller produces body rate command, instead of estimating line-of-sight(LOS) rate for the proportional navigation guidance. Stability...
The strapdown guidance technology, which can improve the system reliability and reduce cost efficiently, has been paid great attention and developed quickly. However, the detecting information of strapdown seeker can't be used to proportional navigation directly because it is coupled with missile attitude, so the method of Line-of-Sight (LOS) rate extraction for strapdown seeker is investigated. Background...
The strapdown seeker is not commonly used despite of many advantages, because of some weaknesses. This paper suggests the guidance law, the look angle control guidance, that controls the look angle measured by strapdown seeker directly. In this paper, we explain briefly the problem using proportional guidance law with the strapdown seeker and introduce the concept of suggested guidance law. And finally...
It is widely agreed that strapdown TV seeker simulation has very important significance to the development and evaluation of guided weapon systems which has strapdown TV seeker. The paper emphasizes on the research of several key techniques during the development of a certain strapdown TV seeker, such as the reconstruction of inertial sight in the strapdown TV seeker simulation, the direct signal...
Precision guidance filter design for a tactical missile with a strapdown seeker aided by low-cost strapdown sensors has been addressed in this paper. The low-cost strapdown sensors consist of an IMU with 3-axis accelerometers and gyroscopes, two 3-axis magnetometers, and a barometer. Missilepsilas position, velocity, attitude, and bias error of the barometer are considered as state variables. Since...
Strapdown seekers have been recently adopted for short-range guided missiles to satisfy the demand for reducing the size and cost of guidance and control units. Since a strapdown seeker measures the look-angle only, rate gyros are additionally required for guidance command calculations. It is, however, well known that this kind of sensor combination inevitably includes a parasite loop which severely...
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