Abstract
Strapdown seeker has been recently adopted for short-range guided weapon to satisfy the demand for reducing the size and cost of guidance and control units. However, the detector of strapdown seeker is fixed rigidly to the weapon body, and many traditional guidance information processing methods cannot be applied directly, because of the change of detection reference and mode. Due to the weakness of strapdown seeker, inertial line-of-sight (LOS) angle rate extraction in the strapdown seeker is investigated based on the analysis of decoupling weapon attitude from the measurement of strapdown seeker. Considering background noise and any inaccurate metrical information, we introduce tracking-differentiator to obtain more precise inertial LOS angle rate for proportional guidance law and design guidance system structure of strapdown guidance weapon. The performance of each of three types of tracking-differentiator is discussed according to the characteristics of seeker. Simulation results and their analysis show preliminarily that the proposed extraction method improves the guidance precision of bomb, thus providing certain useful information for engineering application.
| Original language | English |
|---|---|
| Pages (from-to) | 817-821 |
| Number of pages | 5 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 32 |
| Issue number | 5 |
| State | Published - 1 Oct 2014 |
Keywords
- Angular velocity
- Cost reduction
- Data processing
- Monte Carlo methods
- Time delay