A Hybrid Code Division and Time Division Multiple Access (CDMA/TDMA) Communications Network with Localization via Two-Way Ranging and Direction of Arrival

Abstract

This report develops a hybrid code division and time division multiple access (CDMA/TDMA) network model for localization via two-way ranging and direction of arrival (DoA). CDMA allows multiple agents to transmit simultaneously on the same frequency, increasing the measurement rate. However, the noise generated by simultaneous transmissions can negatively impact the probability of dropped messages as well as the ranging error variance. These competing factors are combined into a normalized ranging variance, providing a single metric to evaluate performance. Previous DoA research using two frequencies is expanded to include multiple frequencies. A statistical DoA model is presented that optimally combines DoA measurements. These models will be a valuable tool for research and development of high dynamic vehicles in GPS-denied environments.

Document Details

• Document Type: Technical Report
• Publication Date: Apr 01, 2021
• Accession Number: AD1131851

Entities

People

• Michael L. Don

Organizations

• United States Army Combat Capabilities Development Command

Tags

Communities of Interest

• Energy and Power Technologies
• Space

DTIC Thesaurus Topics

• Abstracts
• Angle Of Arrival
• Antenna Radiation Patterns
• Antennas
• Code Division Multiple Access
• Communication Systems
• Direction Finding
• Environment
• Frequency
• Frequency Bands
• Geometry
• Global Positioning Systems
• Measurement
• Military Research
• Multiple Access
• Phase Measurement
• Power Levels
• Probability
• Radio Frequency
• Range Finding
• Simulations
• Software Defined Radio
• Telemetry
• Time Division Multiple Access
• Two Dimensional

Fields of Study

• Engineering

Readers

• Computational Modeling and Simulation
• Positioning, Navigation, and Timing (PNT) Technology.
• Radar Systems Engineering.

Technology Areas

• Space