NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Digital frequency synthesizer for radar astronomyThe digital frequency synthesizer (DFS) is an integral part of the programmable local oscillator (PLO) which is being developed for the NASA's Deep Space Network (DSN) and radar astronomy. Here, the theory of operation and the design of the DFS are discussed, and the design parameters in application for the Goldstone Solar System Radar (GSSR) are specified. The spectral purity of the DFS is evaluated by analytically evaluating the output spectrum of the DFS. A novel architecture is proposed for the design of the DFS with a frequency resolution of 1/2(exp 48) of the clock frequency (0.35 mu Hz at 100 MHz), a phase resolution of 0.0056 degrees (16 bits), and a frequency spur attenuation of -96 dBc.
Document ID
19910006638
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Sadr, R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Satorius, E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Robinett, L. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Olson, E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 6, 2013
Publication Date
August 15, 1990
Subject Category
Astronomy
Report/Patent Number
NAS 1.26:187814
NASA-CR-187814
JPL-PUBL-90-32
Accession Number
91N15951
Funding Number(s)
CONTRACT_GRANT: NAS7-918
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available