A NEW METHOD OF AIRCRAFT MOTION ERROR EXTRACTION FROM RADAR RAW DATA FOR REAL-TIME MOTION COMPENSATION

被引：85
作者：
MOREIRA, JR
机构：
[1] DLR, German Aerospace Research Establishment, Institute for Radio Frequency Technology, 8031 Oberpfaffenhofen, FRG
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 1990年 / 28卷 / 04期
关键词：
D O I：
10.1109/TGRS.1990.572967
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Presented is a new solution for real-time motion compensation. The main idea is to extract all the necessary motions of the aircraft from the radar backscatter signal using a new radar configuration and new methods for evaluating the azimuth spectra of the radar signal. Hence an inertial navigation system becomes unnecessary for many applications. The motion compensation parameters for real-time motion error correction are the range delay, the range dependent phaseshift, and the pulse repetition frequency. The motions of the aircraft to be extracted are the displacement in line-of-sight (LOS) direction, the aircraft’s yaw and drift angle, and the forward velocity. Results show that a three-look image with an azimuth resolution of 3 m in L-band using a small aircraft is achievable, and the implementation of this method in real time using an array processor is feasible. © 1990 IEEE
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页码：620 / 626
页数：7
相关论文
共 12 条
[1]   GEOMETRIC ACCURACY IN AIRBORNE SAR IMAGES [J].
BLACKNELL, D ;
FREEMAN, A ;
QUEGAN, S ;
WARD, IA ;
FINLEY, IP ;
OLIVER, CJ ;
WHITE, RG ;
WOOD, JW .
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1989, 25 (02) :241-258
[2]  
BOEHRET H, 1985, BERECHNUNG LEISTUNGS
[3]  
BOESSWETTER C, 1983, 13TH EUR MICR C WORK
[4]   A TUNED AUTO-COMPENSATOR FOR RESIDUAL ANTENNA MOTION IN SYNTHETIC APERTURE RADAR SYSTEMS [J].
CHAN, YK .
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1986, 24 (06) :1025-1027
[5]  
HASLAM G, 1983, 1983 IEEC P, V1, P126
[6]  
Horn R., 1988, P IGARSS 88 S, V2, P1025
[7]  
HORN R, 1989, P IGARSS 89 S TORONT, V4, P2213
[8]   OPTIMAL DOPPLER CENTROID ESTIMATION FOR SAR DATA FROM A QUASI-HOMOGENEOUS SOURCE [J].
JIN, MY .
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1986, 24 (06) :1022-1025
[9]   MOTION COMPENSATION FOR SYNTHETIC APERTURE RADAR [J].
KIRK, JC .
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1975, 11 (03) :338-348
[10]   DOPPLER PARAMETER-ESTIMATION FOR SPACEBORNE SYNTHETIC-APERTURE RADARS [J].
LI, FK ;
HELD, DN ;
CURLANDER, JC ;
WU, C .
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1985, 23 (01) :47-56
12