Atch 1 - UV-NIR Spectrometer Draft Spec.pdf

DRAFT

EQUIPMENT SPECIFICATION

FOR

JSIS UV-NIR SPECTROMETERS

ARNOLD ENGINEERING DEVELOPMENT COMPLEX

ARNOLD AIR FORCE BASE, TN 37389-9998

Atch 1 FA9101-22-Q-B028 Sources Sought

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TABLE OF CONTENTS

1 SCOPE

2 APPLICABLE DOCUMENTST

2.1 Government Documents

2.2 Non-Government Documents

3 REQUIREMENTS

3.1 Detector and Wavelength Characteristics

3.2 Electronics

3.3 Performance

3.4 Optical

3.5 General

3.6 Instrument Software Control Interface

4 SUBMITTALS SUMMARY

4.1 Operation and Maintenance Manuals

4.2 Warranties

4.3 Specification Sheet

5 VERIFICATION

5.1 Vendor Testing

5.2 Government Testing

6 PACKAGING

6.1 Preparation for Delivery:

7 NOTES (NOT USED)

APPENDIX A TECHNICAL SUMMARY

1 SCOPE

This specification document defines the Government’s requirements for one (1) suite of spectrometers to measure the spectral irradiance across ultraviolet (UV), visible (VIS), and near-infrared (NIR) regions from a source within the instruments’ optical field of view (FOV). Measurement in the three wavelength regions (UV, VIS and NIR) will require multiple spectrographs paired with focal plane array detector (FPA). The spectrometers will form a part of a complete multi-spectral imaging system known as the Joint Standard Instrumentation Suite (JSIS). JSIS is being developed by the Center for Countermeasures and AEDC in order to collect radiometric signature data from missiles in free flight, as well as static ground firing tests.

JSIS includes ultraviolet – infrared imagers, radiometers, spectrometers, and other supporting equipment. As part of the JSIS concept of operations, these instruments must be installed on open-air tripods in remote unmanned locations (not pristine laboratory conditions), operated remotely over wired or wireless networks, and reliably produce data that is time synchronized with the other disparate JSIS instrumentation systems. The requirements addressed below arise from this concept of operations.

The instruments core functionality shall be based upon a commercially available product and modified, if necessary, to fully comply with the requirements of this specification.

2 APPLICABLE DOCUMENTS

2.1 Government Documents

The Arnold Engineering Development Center/ Advanced Missile Signature Center "Standard Archive Format," Version 6.0, Revised: 2001 August 09.

Available at: http://media.defense.gov/2017/Jul/05/2001773313/-1/-1/1/AFD-170705-705- 005.PDFDocument A.

2.2 Non-Government Documents

National Electrical Manufacturers Association (NEMA) Enclosure Types Document.

Available at: https://www.nema.org/Products/Documents/nema-enclosure-types.pdf.

3 REQUIREMENTS

Provide a suite of spectrometers (no more than 3 instruments) for which their collective spectral ranges during simultaneous operation will meet the full spectral range and detector frame rate requirement while individually meeting the resolving power and resolution requirements within each unit’s spectral range.

The Government has a requirement to purchase one (1) suite of spectrometers.

3.1 Detector and Wavelength Characteristics

Spectral Range: The collective spectral range for simultaneous operation of the delivered suite of spectrometers shall cover 255 to 1100 nm. Detector(s) and associated optics shall have spectral responses and transmissions that can support spectral coverage down to 190 nm.

Atch 1 FA9101-22-Q-B028 Sources Sought http://media.defense.gov/2017/Jul/05/2001773313/-1/-1/1/AFD-170705-705-005.PDFDocument%20A http://media.defense.gov/2017/Jul/05/2001773313/-1/-1/1/AFD-170705-705-005.PDFDocument%20A https://www.nema.org/Products/Documents/nema-enclosure-types.pdf

Resolving Power: The spectrometers resolving power, defined as

𝑅 = 𝜆 𝜆Δ 𝑓𝑐𝑜𝑙𝑙 𝑤 sin𝛼 + sin𝛽 cos𝛼 shall be greater than or equal to the following when a 48 µm entrance slit is utilized:

A. 2760 at 315.7 nm wavelength, and B. 780 at 589.3 nm wavelength within each spectrometer respective spectral range.

Spectral Resolution: The spectral resolution, defined as three times the pixel dispersion (ΔλCCD = 3 · Δλpix) for a FPA detector shall be less than or equal to the following when a 48 µm entrance slit is utilized:

A. 0.12 nm at 315.7 nm wavelength B. 0.76 nm at 589.3 nm wavelength C. 0.76 nm at 768.2 nm wavelength within each spectrometer respective spectral range.

Dynamic Range: The instantaneous dynamic range, defined as the ratio of the maximum measurable signal level within the detectors’ linear range to the noise equivalent spectral irradiance (NESI) (Ref. section 3.3.2), shall be 10,000 or greater.

Frame Rate: Each spectrometer FPA detectors’ frame rate shall be 500 frames/sec or greater for simultaneous measurements across the instrument suite entire spectral range (ref 3.1.1).

3.2 Electronics

Time Stamp: The detectors’ internal clock shall provide for the ability to synchronize with an externally connected IRIG B AM time signal and encode each sample with a time stamp accurate within 1 msec or less. If an external IRIG input is not available, the detector shall provide an alternate method of outputting an external signal time aligned with the instruments sample rate with a determinism of less than or equal to 1 msec.

A/D Converter: The detectors’ internal analog to digital (A/D) signal converter shall have a resolution greater than or equal to 16-bit, and that full range shall be preserved in the system’s generated data file.

Integration Time: The detectors’ integration time shall be independent of the frame rate and shall be adjustable from 1 µsec to 1 sec /frame rate.

3.3 Performance

Wavelength Repeatability and Accuracy: The spectrometers shall have a minimum wavelength repeatability of 0.03 nm and an accuracy of ± 0.2 nm. Wavelength repeatability and accuracy measurements shall have NIST traceability, which shall be documented and delivered with the instrument(s).

Radiometric Sensitivity: The objective minimal radiance sensitivity for the spectrometer suite, defined as the Noise Equivalent Spectral Irradiance (NESI), is to be less than or equal to the values in Table 1 at the wavelengths indicated, at 2ms or shorter integration time and with 16µm slit width.

Table 1: Noise Equivalent Spectral Irradiance

Wavelength (nm) NESI (W/m2/nm)

260 1.60×10-6

360 1.80×10-7

400 5.20×10-8

600 4.00×10-8

700 4.00×10-8

1100 4.00×10-7

Radiometric Repeatability: Radiometric measurements shall be repeatable to within ±1% of full-scale reading.

Linearity: Linearity of the system digital output reading to spectral irradiance input shall be within 5% of reading from 5% to 95% full analog--digital scale.

Stray Light: The maximum allowable stray light of each assembly (lens + spectrograph + camera) shall be equal to or less than 1×10-4 of the total transmission. The Government furnished lens shall be included in each assembly for vendor acceptance testing.

Order Sorting Filter: If necessary, the spectrometers shall include order sorting filters to block second and higher order effects to achieve the overall instrument performance as defined by this document.

3.4 Optical

Neutral Density Filters: The spectrometers shall be provided with an operationally integrated filter wheel with neutral density (ND) filters. The instrument shall provide for an automated method to identify current filter by position aligned with the optical path.

Each instrument shall be configured for ND of 0 (open hole), 1, 2, 3, and closed hole.

Field of View: The spectrometers shall use commercially available C- or T-mount lenses.

A 50mm focal length COTS lens will be provided by the Government.

3.5 General

Power Supply: The instrument power requirement shall be self-contained and external power accessory, if required, shall be supplied with each unit.

Operating Voltage: The instrument power requirements shall conform to 120 VAC ± 10% at 60 Hz ± 3 Hz with a maximum current of 6 amperes.

Electromagnetic Compatibility: The instrument shall be compliant with CE or FCC (Part15) regulations for emissions (industrial equipment class), or equivalent.

Ambient Operating Environment: The instrument shall be operable over the ambient temperature range from -12°C to 20°C and relative humidity range between 1 to 80% non-condensing.

Detector Cooling: If applicable, the detector shall be electrically cooled and the instrument shall reach operational temperature within 15 minutes.

Interchangeability: The primary hardware components utilized for adjusting sensitivity and spectral coverage (e.g. slits, gratins, optics, etc.) shall be easily interchangeable by the user without requiring returning to the vendor

Instrument Mounting: Each assembly shall be mounted on a tripod-mountable plate, where an assembly here is considered to be all the components needed for the collection of spectral measurements within a given spectral coverage region (imager, spectrograph, lens, etc). The plate shall be of an optical breadboard design or similar and have integrated threaded ¼”-20 threads for attachment to a tripod dovetail baseplate.

Sighting Scope: The instrument shall be provided with co-aligned visible video display or an integrated sighting scope for a boresight distance of 280m. The sighting scope shall be adjustable if needed to re-boresight at different ranges.

Statement of Volatility: The instrument shall include a Statement of Volatility, or procedures to accomplish a complete and total instrument data memory wipe, such that no data history of previous data collects resides within the instrument or on software GUI license dongles, if required.

3.6 Instrument Software Control Interface

Instrument Software Environment: The instrument shall be supplied with software having a Graphical User Interface (GUI) that provides instrument status monitoring, instrument control, instrument data acquisition and data viewing.

The software shall be capable of running on existing Government computers under the Microsoft Windows 10 64-bit operating system.

The software shall communicate with the instrument using protocols and methods that either are industry standards or are provided along with full, detailed technical documentation. Any proprietary, licensed technology employed shall be provided with a non-expiring usage license.

The software shall be able to start up and run without requiring the instrument to be connected and shall be able to detect and indicate the presence or absence of a connection with the instrument.

Instrument Software Control: The software shall include the following functionality:

A. Display live data from instrument

B. Arm/Disarm instrument so that data acquisition will begin immediately upon a start trigger followed by saving the acquired data, incrementing filename, and rearming to accept another trigger.

C. Start instrument data acquisition on-demand from the GUI or Application Programming Interface (API)

D. Permit remote start instrument data acquisition via at least one of the following methods:

i. API

ii. External hardware trigger consisting of a hardware switch closure and/or a TTL signal to the instrument head

E. Stop instrument data acquisition either by an acquisition timer, GUI stop button, or through API

F. Ability to automatically increment filename

G. Ability to set base filename of output file(s) for next data acquisition

H. Be scriptable and provide full functionality when used from either Python or C

I. Be capable of recording data at full sample rate with the capability to record up to at least 30 seconds with no dropped samples/frames

J. Store the instrument configuration for the data acquisition in the set of produced data files

Instrument Data Viewer: The provided software shall be capable of displaying data from previously recorded files.

The file format used to store the recorded data shall be accompanied by documentation about the binary format of the data fields or be a Standard Archive Format (SAF, see reference 2.1.1) data file.

Software Interface: An API, or similarly functioning software interface shall be provided that, concurrently with operation of the instruments software (reference section 3.6.1) allows the user to monitor (GET) and set (SET) instrument operational parameters.

The API, or similar function, shall allow the user to GET:

A. Instrument connections status B. Connected device ID C. IRIG sync status D. Instrument internal temperature, if applicable E. Current Instrument State

i. Not connected

ii. Idle, instrument connected and waiting command

iii. Armed, ready for acquisition

iv. Acquiring, capturing data

v. Writing, saving data to disk, if applicable

vi. Complete, instrument acquisition and data transfer complete

vii. Error state

The API, or similar function, shall allow the user to GET and SET

A. Output file destination folder where acquired data files will be created B. Record durations in seconds C. Output file type, instrument native format or SAF, if applicable D. Base filename of output file(s) for the next data acquisition E. Sample rate in samples per second or Hz F. Current calibration name (identifier/method), if applicable.

4 SUBMITTALS SUMMARY

Provide all submittals listed in Table 2.

4.1 Operation and Maintenance Manuals

Submit instrument operation and maintenance manual(s) with each unit upon delivery.

Operational instructions shall cover the use of the instrument and instrument control software. The maintenance manual shall include a list of recommended spare parts.

4.2 Warranties

Submit manufacturer’s written warranty prior to unit purchase for at least one-year coverage of the instruments parts and labor.

4.3 Specification Sheet

Submit a product data sheet verifying all instrument requirements will be met prior to purchase.

Table 1: Submittal List No. Section Reference Submittal Description Due

1 4.1.1 Operation & Maintenance Manual Upon Unit Delivery

2 4.2.1 Warranty Prior to Unit Purchase

3 4.3.1 Specification Sheet Prior to Unit Purchase

4 4.1.2 Acceptance Test Plan 2 Weeks Prior to Acceptance Test

5 4.1.3 Acceptance Test Report Prior to Unit Shipment

5 VERIFICATION

5.1 Vendor Testing

The Vendor shall be responsible for the planning, execution, and reporting of acceptance testing for each unit delivered. Acceptance testing shall verify compliance with the specification. Compliance shall be verified through test, demonstration, analysis, or inspection with the Government’s concurrence.

The Vendor shall document the plan for the suite of instruments in an Acceptance Test Plan. The plan shall be provided to the Government two weeks before testing.

The Vendor shall document the results of each unit’s acceptance in a Test Report to be provided to the Government prior to shipment. Acceptance testing shall be conducted at the Vendor’s facilities. The Government reserves the right to attend Vendor verification testing.

5.2 Government Testing

Government acceptance testing may include verification of the Vendor testing and/or completion of verification not sufficiently addressed by Vendor testing.

6 PACKAGING

6.1 Preparation for Delivery:

Vendor shall provide all preservation, packaging, and packing to ensure safe delivery of each unit and related components to Arnold AFB, TN. The vendor shall provide manufacturer’s operating instructions in packaging.

7 NOTES (NOT USED)

APPENDIX A TECHNICAL SUMMARY

Table 1: Spectrometer Specifications

Detector and Wavelength Characteristics

Spectral Range Delivered suite: 255 – 1100 nm Capability of Optics and detectors: 190 – 1100 nm

Resolving Power (w/ a 48 µm entrance slit)

≥ 2760 at 315.7nm ≥ 780 at 589.3nm

CCD Resolution (w/ a 48 µm entrance slit)

≤ 0.12 nm at 315.7nm ≤ 0.76 nm at 589.3nm and 768.2nm

Dynamic Range ≥ 10,000

Sample Rate 500 Hz at full spectral range

Electronics

Time Stamp ≤ 1msec accuracy

A/D Converter ≥ 16-bit

Integration Time independently adjustable from 1msec – 1 sec /frame rate

Performance

Wavelength Repeatability ≤ 0.03 nm Wavelength Accuracy ≤ ± 0.2 nm Radiometric Repeatability ≤ ±1% of full-scale reading Radiometric Sensitivity Maximum NESI for 2ms integration and 16um slit width Wavelength (nm) NESI (W/m2/nm) 260 1.60×10-6 360 1.80×10-7 400 5.20×10-8 600 4.00×10-8 700 4.00×10-8 1100 4.00×10-7 Linearity ±5% of reading from 5% to 95% full A/D scale Stray Light ≤ 1×10-4 of total transmission for assembly Order Sorting Filter Include if necessary

Optical

ND Filter Integrated filter wheel with ND open, 1, 2, 3, and closed

Lens Government provided C- or T-mount lens

General

Operating Voltage 120VAC ± 10% at 60Hz ± 3 Hz with a maximum current of 6 amperes

Electronic Emission CE or FCC (Part 15) compliant

Operating Environment -12°C to 20°C at 1 to 80% relative humidity, non-condensing

Detector Cooling electrically cooled, operable within 15min upon initial power

Interchangeability Changing of slits, gratings, and optics possible by user

Instrument Mounting integrated 1/4in Ø, 20 TPI holes, capable of tripod mounting

Sighting Scope Adjustable co-aligned visible display or integrated sighting scope to accurately aim the unit. Nominal boresight distance 280m.

Statement of Volatility include Statement of Volatility or procedure for memory wipe