Academic Journal
Use of Least Means Squares Filter in Control of Optical Beam Jitter
| العنوان: | Use of Least Means Squares Filter in Control of Optical Beam Jitter |
|---|---|
| المؤلفون: | Watkins, R J, Agrawal, Brij N |
| المساهمون: | NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
| المصدر: | DTIC |
| سنة النشر: | 2007 |
| المجموعة: | Defense Technical Information Center: DTIC Technical Reports database |
| مصطلحات موضوعية: | Statistics and Probability, Optics, Mechanics, Radiofrequency Wave Propagation, BEAMS(RADIATION), JITTER, LEAST SQUARES METHOD, OPTICS, ADAPTIVE FILTERS, BIAS, TEST BEDS, LINEAR-QUADRATIC REGULATORS, OPTICAL BEAM JITTERS |
| الوصف: | Meeting optical beam jitter requirements is becoming a challenging problem for several space programs. A laser beam jitter control test bed has been developed at the Naval Postgraduate School to develop improved jitter control techniques. Several control techniques, such as least means squares and linear quadratic regulator were applied for jitter control. Enhancement in least means squares techniques to improve convergence rate was achieved by adding an adaptive bias filter to the reference signal. In the experiments, the platform is vibrated at 50 and 87 Hz. In addition, a fast steering mirror is used to inject a random component of 200 Hz band-limited white noise. The experimental results demonstrated that the addition of the adaptive bias filter to the least means squares algorithm significantly increased the converging rate of the controller. To achieve the reduction of both sinusoidal and random jitter, a combination of least means squares/adaptive bias filter and linear quadratic regulator is most effective. The least means squares/adaptive bias filter control is most effective for a sinusoidal jitter and the linear quadratic regulator control for a random jitter. ; Published in the Journal of Guidance, Control, and Dynamics, v30 n4 p1116-1122, July-August 2007. |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| Relation: | http://www.dtic.mil/docs/citations/ADA601094 |
| الاتاحة: | http://www.dtic.mil/docs/citations/ADA601094 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA601094 |
| Rights: | Approved for public release; distribution is unlimited. |
| رقم الانضمام: | edsbas.50E7487B |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |