NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
ERS-1 SAR data processingTo take full advantage of the synthetic aperature radar (SAR) to be flown on board the European Space Agency's Remote Sensing Satellite (ERS-1) (1989) and the Canadian Radarsat (1990), the implementation of a receiving station in Alaska is being studied to gather and process SAR data pertaining in particular to regions within the station's range of reception. The current SAR data processing requirement is estimated to be on the order of 5 minutes per day. The Interim Digital Sar Processor (IDP) which was under continual development through Seasat (1978) and SIR-B (1984) can process slightly more than 2 minutes of ERS-1 data per day. On the other hand, the Advanced Digital SAR Processore (ADSP), currently under development for the Shuttle Imaging Radar C (SIR-C, 1988) and the Venus Radar Mapper, (VMR, 1988), is capable of processing ERS-1 SAR data at a real time rate. To better suit the anticipated ERS-1 SAR data processing requirement, both a modified IDP and an ADSP derivative are being examined. For the modified IDP, a pipelined architecture is proposed for the mini-computer plus array processor arrangement to improve throughout. For the ADSP derivative, a simplified version is proposed to enhance ease of implementation and maintainability while maintaing real time throughput rates. These processing systems are discussed and evaluated.
Document ID
19870003532
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Leung, K.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bicknell, T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Vines, K.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 5, 2013
Publication Date
September 1, 1986
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NAS 1.26:179913
NASA-CR-179913
JPL-PUB-86-33
Accession Number
87N12965
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available