Mr. Olof Holmgren Profile

Olof Holmgren

Optical Systems Engineer at FLIR Systems Ab

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 12 May 2005 Paper

Range performance modeling for staring focal plane array infrared detectors

Anders Dahlberg, Olof Holmgren

Proceedings Volume 5784, (2005) https://doi.org/10.1117/12.603341

KEYWORDS: Minimum resolvable temperature difference, Performance modeling, Systems modeling, Thermal modeling, Imaging systems, Thermography, Staring arrays, Electro optical modeling, Statistical modeling, Data modeling

Read Abstract +

The generally accepted models for imaging and range performance modeling of thermal imagers have not been able to properly model under-sampled systems, i.e. staring focal plane arrays (FPAs). The ruling STANAGs 4349 and 4350 on measurement and modeling of Minimum Resolvable Temperature Difference (MRTD), by definition only deal with properly sampled systems and thus cannot address performance beyond the Nyquist frequency. This includes the FLIR92 model which is based on the models defined in STANAG 4350. Range performance modeling, defined through STANAG 4347, is based on MRTD and thus likewise limits performance to below Nyquist frequencies. Practical experience has long shown that this limitation is not valid and development of new modeling techniques to address these problems has been performed e.g. in Germany, the TRM3 model, and in the US, with the NVTherm model. TRM3 addresses the under-sampled systems by introducing a concept of Minimum Temperature Difference Perceived (MTDP) which replaces MRTD for frequencies beyond Nyquist. NVTherm instead introduces a modified MRTD function through the concept of MTF squeeze. Typically, range performance predictions from NVTherm will increase ranges by some 15% over Nyquist resolution based predictions, and TRM3 based predictions exceed Nyquist ranges by up to 30%. A study is done to compare modeling results from these two models with laboratory measurements (MRTD) on QWIP long wave staring FPA based thermal imagers and finally relate these to empirical data from range performance field trials against actual targets.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years