Search Results
The search returned 1,243 publication(s) on its.ntia.gov.
This technical memorandum provides technical details for the video quality subjective experiment its4s4. This experiment includes 196 videos, each 4 seconds in duration, depicting camera pans at different speeds. Other impairments are avoided where p...
This report is a case-history of the development, deployment, and operational experiences associated with 5 GHz unlicensed national information infrastructure (U–NII) devices that incorporate a detect-and-avoid approach to spectrum sharing. Such dyna...
Received signal power measurements were performed on the Common Air Route Surveillance Radar (CARSR) operating in the 1300 1370 MHz band in Cedar City, Utah, and on the Airport Surveillance Radar (ASR 9) operating in the 2700 2900 MHz band in Trout C...
This report describes emission spectrum measurements of a wireless jammer device operated temporarily inside a South Carolina state prison maximum security housing block. The measurements were intended to demonstrate the operation of the jammer in fo...
In this white paper, we describe a new convolutional framework for waveform evaluation, WEnets, and build a Narrowband Audio Waveform Evaluation Network, or NAWEnet, using this framework. NAWEnet is single-ended (or no-reference) and was trained thr...
Received signal power measurements were performed on the Common Air Route Surveillance Radar (CARSR) operating in the 1300–1370 MHz band in Parker, Colorado and on the Airport Surveillance Radar (ASR 9) operating in the 2700 2900 MHz band in Plattevi...
Interference protection criteria (IPC) determine the interfering signal power a system can tolerate when sharing spectrum with other services. IPC are typically determined by measurements, but good measurements are often hindered by restrictions on e...
Propagation models are used to inform scientists and engineers on how radio propagation through an environment will affect the radio signal received on the other end of the link. Many propagation models have been developed: some are curve-fitting mod...
Geopositioning uncertainty degrades the usefulness of the data collected while conducting propagation measurements in the field. Researchers currently have access to highly detailed terrain, propagation, and locational data sets, but these data are ...
We present path gain results at 3,500 MHz from a mobile channel measurement campaign that was carried out at the ITS Table Mountain Field Site. The purpose of this effort was to validate measurements obtained from a prototype sliding correlator chann...
The conventional video subjective test design, in which subjects view and rate multiple versions of each source video sequence, was used for decades. New technology, like adaptive streaming, makes it almost impossible to use this design since much lo...
This technical memorandum provides technical details for the video quality subjective experiment its4s3. This experiment includes 594 videos, each 4 seconds in duration. The experiment consists of six sessions, each portraying a different public safe...
This technical memorandum provides technical details for the image quality subjective experiment its4s2. This experiment contains 1,473 still images that were presented to subjects for 4 seconds each, as per still video. The goals are (1) to train no...
In support of the Network Universal Persistence (Network UP) Broad Agency Announcement (BAA) sponsored by the Defense Advanced Research Projects Agency (DARPA), the Institute for Telecommunication Sciences (ITS) was asked to perform a dual-band tacti...
Video surveillance systems, designed to provide security, act like a guard in a watchtower — a security solution that has been well understood for thousands of years. Systems are designed to meet security needs of the customer who installs the syste...
This report describes a set of best practices for the preparation and verification of radio propagation measurement systems. We discuss advantages and disadvantages of various channel sounders, the common components used in these systems, and measure...
NTIA Technical Memorandum TM-18-527 describes procedures for testing the functionality of Environmental Sensing Capability (ESC) sensors that will detect 3.5 GHz radar signals for future spectrum sharing systems. The present document describes addit...
This report describes emission spectrum and time domain measurements of a contraband wireless device micro-jammer that was operated temporarily in four Commercial Mobile Radio Service (CMRS) bands at a Federal Correctional Institution (FCI) at Cumbe...
The Institute for Telecommunication Sciences (ITS) is the research and engineering laboratory of the National Telecommunications and Information Administration (NTIA), an agency of the Department of Commerce (DoC). ITS serves as a principal federal r...
Interference protection criteria (IPC) determine the interfering signal power a system can tolerate when sharing spectrum with other services. IPC are typically determined by measurements, but good measurements are often hindered by restrictions on ...