1.05 PWS_NNMBT_24.pdf

Performance Work Statement Multibeam Training

The Naval Meteorology and Oceanography Command (NAVMETCOM) has a requirement for training in multibeam theory, installation, data collection and analyses, and multibeam installation, to include practical application training (Survey Planning and Collection) and multibeam data analysis.

1.0 Background

1.1 The Information Warfare Training Group Gulfport (IWTG-G) manages an international hydrographic survey training program for NAVMETCOM. To successfully teach all the required subjects we require contracted services in the area of multibeam and LiDar training. The international hydrographic survey training program requires on-site specialized training in multibeam theory, operation of the NORBIT MBES and Norbit iLiDar system and associated Otter unmanned surface vehicle (USV), survey planning and specifications, analysis and practical survey training which meets the requirements specified in the IHO S-5B Standards of Competence for Category “B” Hydrographic Surveyors. The course cannot be completed without these services.

2.0 Scope

2.1 The training objectives are to teach the students theory and application of multibeam survey practices, reinforced with practical application during mobilization of a vessel of opportunity AND the Otter USV with the NORBIT MBES and Norbit iLiDar system and during the Comprehensive Final Field Project (CFFP), where students under supervision will plan and conduct a hydrographic survey IAW standards set forth by the International Hydrographic Organization using the NORBIT MBES and Norbit iLiDar system with associated vessel of Opportunity and Otter USV. The contractor will train the students how to plan a survey, write a survey specification, and conduct a hydrographic survey using NAVOCEANO’s training vessel or other available vessel, NIWTGG’s associated survey equipment to include the NORBIT MBES and iLiDar system AND Otter USV.

2.1.1 It is important to note that this work is unclassified and physical/logical access required. All curriculum materials used in the scope of this training are APPROVED for public release. All data collected and the associated derived products are APPROVED for public release.

2.2 Course topics covered shall include, but not be limited to the following:

2.2.1 Survey planning

2.2.1.1 Writing/reading a survey technical specification.

2.2.2 Otter USV

2.2.2.1 Functions

2.2.2.2 Operation

2.2.2.3 USV preparation

2.2.2.4 USV Line planning

2.2.3 Swath Systems

i. Beam characteristics (B)

1. Multibeam Basic Principles

2. Evolution of Multibeam Transducers

3. Multibeam Echo Sounder System

ii. Transducer elements and arrays

iii. Beam forming and beam steering

1. Transmission Beam Forming

2. Side Lobes

3. Beam steering

4. Return Echo Beam Forming

iv. Backscatter and water column returns (B)

v. Principles and geometry of multibeam and interferometric (phase measurement) sonar systems

1. Interferometry (Phased Array)

2. Combined electronic beam forming and interferometric (phased array) method

3. Amplitude and phase bottom detection

4. Bottom detection techniques: amplitude vs. phase detection

5. Interferometry and Phase Differencing

6. Principles of Operation

7. Other corrections

vi. Multi-beam side-scan imagery

vii. Principals and Limitations of Attitude Sensors, Such as the GNSS, as used in

Determining Motion Compensation

viii. Vessel Motion Effects on Coverage and Accuracy

1. Speed

2. Heave

3. Roll

4. Pitch

5. Heading

6. Yaw

7. Multibeam stabilization

ix. Range and angle uncertainty (I)

1. Dependence of Depth Coverage and Uncertainty

a. Bottom spatial coverage (I)

2. IHO standards for coverage and accuracy

a. Variations in beam spacing and footprint size

x. Equipment types/Mounting/Installation

1. Hull and pole mounting of transducers considering platform motion. Integration of components including time stamping, attitude compensation, sensor offsets and networking.

xi. Beam Characteristics

xii. Beam spacing

xiii. Signal parameters

xiv. Vessel roll, pitch, and yaw effects

xv. Beam footprint size

xvi. Beam forming methods

xvii. Electronic beam forming

xviii. Physical beam forming

xix. Installation and configuration (B)

xx. Backscatter and seabed classification

1. Backscatter Imagery

xxi. Data collection

1. Surface and water column sound speed monitoring

2. Sound speed

3. Seafloor influences

4. Gain, power, pulse length

5. Multibeam sonar characteristics effect on coverage and accuracy

6. Bandwidth

7. Beamwidth

8. Beam elevation angle

9. Ping Rate

10. Beam processing modes

11. Equidistant scanning modes

12. Quality control procedures

a. Environmental effects on coverage and accuracy

b. Background noise

c. Depth

d. Multibeam Calibration

e. Sensor Location and Alignment

f. Complexity of multibeam surveying

g. Multibeam Patch Test

i. Prior to the patch test

ii. Patch test sequence

iii. Timing bias calibration

iv. Roll bias calibration

v. Pitch bias calibration

vi. Heading bias calibration

vii. Outer-beam bias calibration

h. Targets vs. Contours

xxii. Sidescan Sonar

1. Data collection during SURVOPS

xxiii. LiDar

1. Fundamentals of installation

2. System calibration

3. Data acquisition

4. Data analysis

5. Data display

xxiv. Bottom Classification using Multibeam Echosounder

2.3 Following are the expected learning outcomes based on the topics provided above:

I.Install, calibrate a NORBIT multibeam and LiDar system on a vessel of opportunity and Otter

USV. Conduct Patch test and calibration as required II.Measure offsets and create vessel file

III.Plan and Conduct a hydrographic survey in the vicinity of Pass Christian Harbor Approaches (MS Sound) using vessel of opportunity.

IV. Plan and Conduct a hydrographic survey in the vicinity of Pass Christian Harbor using Otter

USV.

V.Define characteristics of beams in relation to transducer settings. Compare phase and interferometric systems with multi-beam systems

VI.Describe characteristics of returns in the context of seabed type, angle of incidence and scatter from within the water column

VII.Determine sounding density and object detection capability as functions of system parameters VIII.Describe suitable mounting structure and location for transducers given operational constraints IX.Differentiate between error sources in phase and amplitude detection modes. Identify sources of range and angle uncertainty depending on acoustic parameter configuration X.Set up, deploy and operate a swath sonar system and LiDar system (Vessel of Opportunity

AND Otter USV) XI.Identify problems or artifacts in on-line data due to inappropriate configuration or changing environmental parameters XII.Tune acoustic parameters for optimum performance

XIII.Apply quality control procedures to data acquisition and on-line processing XIV.Conduct Multibeam data analysis

2.4 Course materials

2.4.1 The contractor shall provide an instructor or instructors to accomplish the stated learning objectives sufficient to meet the expected learning outcomes stated above.

2.4.2 Government Furnished Property:

Utility boat and driver (vessel of opportunity)

NORBIT MBES system

NORBIT LIDAR system

Otter USV

Classroom

Student books/curriculum or reference materials Suitable vessel, mobilized for hydrographic surveying; including fuel, driver, and other logistical support as needed

2.5 Course Schedule

2.5.1 Mon- Fri; The course shall include instruction during normal business hours. Normal business hours are 0730 to 1600 central standard time.

2.6 Period of Performance

2.6.1 Commence the morning of 05 Jun through the afternoon of 08 August 2023

3.0 PERFORMANCE REQUIREMENT SUMMARY

3.1 The contractor must provide an instructor or instructors capable of teaching the learning objectives outlined in this document to a level which satisfies the desired learning outcomes specified in para

2.3 and to the standards discussed in the IHO S-44 and S5B.

3.2 It is important to note that this work is unclassified and physical/logical access required. All curriculum materials used in the scope of this training are APPROVED for public release. All data collected and the associated derived products are APPROVED for public release.

3.3 Security Requirements.

The overall classification of this contract is Unclassified. Contractor does not require access to classification information in the performance of this contract. The contractor does not require access to U.S. Government Information Technology (IT) systems. The contractor does not require access to any NAVOCEANO spaces. The contractor does not require the use or need of a CAC.

The data collected, produced, or derived during this training is Unclassified, approved for public release.