Shipboard Wave Height Sensor

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Abstract:

This report summarizes the results of an effort to develop, test and evaluate a pulsed laser based, shipboard mounted, ship motion compensated wave height sensor. This system was used in a North Atlantic run to measure sea surface waves at normal sea speed. The wave height sensor uses an infrared wave surface range sensor coupled with a vertical accelerometer and pitch and roll sensors. The prototype system was evaluated for measurement accuracy and reliability as well as ruggedness and survivability in elevated sea state conditions. Lack of ground truth precluded a comprehensive qualitative evaluation of overall performance. Data drop outs were experienced when operating in elevated seas thereby making further work necessary on the sensor and on the data processing software. Prototype system characteristics, signal processing flow chart and analyzed data are presented. As an adjunct to development of the wave height sensor, another project was conducted to investigate through model testing the influence of ship generated waves in front of the bow. The report of this study is included as an appendix.

Author(s):
No Author(s) Identified
Author Organization(s):
SCIENCE APPLICATIONS INTERNATIONAL CORP GOLETA CA
Descriptive Note:
Final rept
Pagination:
0101

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
SR-1314, SSC-362
Contract/Grant Number(s):
DTCG23-87-C-20033
Monitor Series:
362, SSC
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_4_Logistics; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_4.7.2_Installation Services; JCA_4.7_Base and Installations Support; JCA_1.2.3_Educating; JCA_1.2.7_Experimentation; JCA_1.3.2_Personnel Management; JCA_4.6_Engineering; JCA_1.2.5_Lessons Learned
Modernization Areas:
Directed Energy
Communities of Interest:
Sensors
Descriptor(s):
*COMPUTER PROGRAMS, DATA PROCESSING, MEASUREMENT, ROLL, SHIPS, OCEAN WAVES, DETECTORS, SURVIVABILITY, OCEAN SURFACE, ACCELEROMETERS, ACCURACY, PROTOTYPES, PULSED LASERS, RELIABILITY, MODEL TESTS, SHIPBOARD, FLOW CHARTING, OCEANS, SEA STATES, NORTH ATLANTIC OCEAN, RUGGEDIZED EQUIPMENT, WAVES, SURFACE TRUTH, HEIGHT FINDING, VERTICAL SPEED INDICATORS, SIGNAL PROCESSING
Field(s)/Group(s):
Physical and Dynamic Oceanography, Infrared Detection and Detectors
Keyword(s):
*OCEAN WAVES, *INFRARED DETECTORS, HEIGHT FINDING, PULSED LASERS, SHIP MOTION, COMPENSATION, RANGE FINDING, INFRARED LASERS, WAVE HEIGHT DETECTORS, DATA ACQUISITION, PITCH(MOTION), SEA STATE, OCEANOGRAPHIC DATA, HEAVING, BOW WAVES
Report Date:
1990 Nov 01