Browse > Article
http://dx.doi.org/10.5139/JKSAS.2012.40.4.292

RF Seeker LOS Rate Estimation Method using Covariance and Signal Management  

Moon, Gwan-Young (국방과학연구소 1-1)
Jun, Byung-Eul (국방과학연구소 1-1)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.40, no.4, 2012 , pp. 292-299 More about this Journal
Abstract
The line-of-sight(LOS) rate is estimated using Kalman filter in Radio-Frequency(RF) seeker. For the two axis gimbaled seeker, proper system modeling is considered and the basic filter structure is set up. The main issue for Kalman filter is choosing the proper process and measurement noise. For the measurement process, the signal to noise ratio(SNR) and other components are introduced. To cope with the eclipse problem or other abnormal seeker status, the pseudo input signal concept is proposed. By conditioning abnormal signals, the LOS rate estimation performance is increased. The process noise is also an important factor in the propagation phase. The analytical approach on a process noise component is performed and a reliable region for the filter is calculated based on the eigenvalue analysis. Some numerical simulations are performed to check the validity of suggested algorithm.
Keywords
LOS Rate; Kalman Filter; Process Noise; Measurement noise; RF Seeker;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Uhrmeister, B. "Kalman Filters for a Missile with Radar and/or Imaging Sensor," Journal of Guidance, Control, and Dynamics, Vol. 17, No. 6, 1994, pp.1339-1344.   DOI   ScienceOn
2 Waldmann, J. "Line-of-Sight Rate Estimation and Linearizing Control of an Imaging Seeker in a Tactical Missile Guided by Proportional Navigation," IEEE Transactions on Control Systems Technology, Vol.10, No.4, 2002, pp.556-567.   DOI   ScienceOn
3 정상근, 김을곤, "Bank-to-Turn 유도탄의 호밍 유도를 위한 2축 김발형 탐색기 동체운동 상관 보상," 한국항공우주학회지, Vol. 30, No. 6, 2002, pp.101-106.
4 오승민, "스트랩다운 탐색기를 장착한 전술 유도탄의 UKF 기반 종말호밍 유도," 한국항공우주학회지, Vol. 38, No. 3, 2010, pp.221-227
5 Bhattacharyya, A.K., Bhattacharya, S., and Mukhopadhyay, S, "Modeling of RF Seeker Dynamics and Noise Characteristics for Estimator Design in Homing Guidance Application," IEEE Region 10 and the Third international Conference on Industrial and Information Systems, 2008., Kharagpur, Dec. 2008, pp.1-7.
6 Ekstrand B., "Tracking Filters and Models for Seeker Application," IEEE Transactions on Aerospace and Electronic Systems, Vol. 37, No. 3, 2001, pp.965-977.   DOI   ScienceOn
7 문관영, 전병을, 이재웅, "RF 탐색기 호밍필터 공분산 및 신호 관리기법," 한국항공우주학회 추계 학술발표회, 제주, 2011, pp.623-626.
8 Zarchan P., Tactical and Startegic Missile Guidance, 4th edition, AIAA, Inc., Reston, Virginia, USA, 2007.
9 Brown R.G and Hwang P. Y.C., Introduction to Random Signals and Applied Kalman Filtering, 3rd edition, John Wiley & Sons Inc., New York, USA, 1997.
10 Gelb A., Applied Optimal Estimation, The MIT press, Cambridge, Massachusetts, USA, 1974.
11 Hugehes, E., Guided Weapon Seekers, Cranfield Univ., UK, 2007.