1,310 research outputs found
A gyroscope calibration analysis for the Gamma Ray Observatory (GRO)
Current documentation and software do not adequately address the calculation and use of the optimal weight matrices involved in calibrating inertial reference units (IRU). Several facets of the GRO IRU calibration as it relates to the bias and misalignment weighting matrices are investigated. The physical meaning and use of the bias and misalignment weight matrices in IRU calibration are examined. The relation of the weighting and the final biases, misalignments, and their corrections are pursued. Methods for determining reliable, realistic weighting matrices to be used in the GRO IRU calibration (IRUCAL) utility are determined. Possible correlations among observation uncertainties are also explored. For the undetermined case where the maneuvers are insufficient to identify all calibration parameters, the weighting matrices allow as much information as possible to be extracted from the measurements. Finally, applicable simulated flight data are used, incorporating the appropriate calibration maneuvers, to test the weighting matrices in the IRUCAL utility, and examine correlation effects
The exchanges of fresh and salt waters in tidal estuaries
An empirical theory is presented which describes the exchanges between various parts of an estuary as a result of tidal oscillations, and which permits the calculation of the average distribution of fresh and salt water within the estuary. The characteristics of the estuary used in the calculations are the mean range of tides, the river flow, and the topography, all readily available for most estuaries. The calculations are shown to produce results which are similar to distributions observed in three very different estuaries. The theory will permit calculation of the changes in distribution of salinity and fresh water in any given estuary to be expected as a result of variation of river flow
Supplementary report on the distribution of salinity in the estuary of the Delaware River
Originally issued as Reference No. 52-103 Supp., series later renamed WHOI-. NYC Exhibit 40A. Supplement to NYC Exhibit 40.Since the preparation of my report on the distribution
of salinity in the estuary of the Delaware
River (N.Y.C. Exhibit 40) a new formula governing
the releases of water from storage during periods of
low flow has been proposed
The distribution of salinity in the estuary of the Delaware River
Originally issued as Reference No. 52-103, series later renamed WHOI-.The Woods Hole Oceanographic Institution has been
asked by the New York City Board of Water Supply to
study and review recent observations on the distribution
of fresh and salt water in the Estuary of the Delaware
River. The objective was to determine the relationship
between river flow and the salinity in various parts or
the estuary so that the effects of the proposed diversion
of Delaware River water on the distribution of
salinity could be evaluated
Analysis and improvement of the vector quantization in SELP (Stochastically Excited Linear Prediction)
The Stochastically Excited Linear Prediction (SELP) algorithm is described as a speech coding method employing a two-stage vector quantization. The first stage uses an adaptive codebook which efficiently encodes the periodicity of voiced speech, and the second stage uses a stochastic codebook to encode the remainder of the excitation signal. The adaptive codebook performs well when the pitch period of the speech signal is larger than the frame size. An extension is introduced, which increases its performance for the case that the frame size is longer than the pitch period. The performance of the stochastic stage, which improves with frame length, is shown to be best in those sections of the speech signal where a high level of short-term correlations is present. It can be concluded that the SELP algorithm performs best during voiced speech where the pitch period is longer than the frame length
Unusual phosphorus concentrations in the Florida Red Tide sea water
Beginning in late November 1946, and continuing at sporadic intervals until July 1947, a flowering of Gymnodinium sp. caused discolored water off the west coast of Florida. Millions of fish were killed along the coastline and this mortality was always directly associated with the presence of Gymnodinium (Gunter, Smith and Williams, 1947). The phenomenon has been popularly called the Red Tide
The iron content of sediment samples in New York Bight obtained during R/V Caryn cruise 108, October 19 - 24, 1956
Supplement to Reference No. 57-5.
Originally issued as Reference No. 57-19.During R/V CARYN Cruise No. 108 to the New York Bight
samples of the bottom were obtained with an orange peel dredge
at 23 stations and additional bottom samples were obtained by
aqualung divers. These samples have been returned to the Woods
Hole Oceanographic Institution where they have been analyzed
for their iron content.National Lead Compan
Mars mission solar array Semiannual progress report, period ending 31 Dec. 1969
Design and testing of beryllium-structure solar panel for Mars missio
The annual cycle of phosphorus and nitrogen in New England coastal waters
Distributions of phosphorus and nitrogen in New England coastal waters at various times of year are described. In surface waters the nitrate-nitrogen content is sometimes completely exhausted, even though small concentrations (0.2-0.5µg-at/l) of phosphorus are always available. The ratio of concentrations by atoms, N:P, varies in surface waters from maximum values of about 10: 1 to values approaching zero as the nitrate is exhausted...
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