Introduction to PCM Telemetering Systems
Features
Summary
Telemetering systems and applications have moved far beyond the space flight telemetry most people have heard of to cutting-edge uses across a broad range of disciplines, including industry, medicine, and meteorology. To fully understand and participate in the acquisition of data this technology makes possible, scientists in these fields along with engineers new to telemetering require some background in the concepts, hardware, and software that makes the technology so valuable.
Introduction to PCM Telemetering Systems, Second Edition summarizes the techniques and terminology used in sending data and control information between users and the instruments that collect and process the data. It gives an overall systems introduction to the relevant topics in three primary areas: system interfaces; data transport, timing, and synchronization; and data transmission techniques. The topics addressed include sensor characteristics, user interface design, data filtering, data framing, statistical analysis, telemetry standards, time code standards, modulation techniques, and radio propagation. To reinforce understanding, each chapter includes exercises.
Rather than focusing on design specifics, which can change so rapidly with evolving technologies, the author centers his discussions on concepts and standards. This edition incorporates the latest standards, LabVIEW-based examples of telemetry and command processing, and simulations using multiSim and Commsim.
Table of Contents
INTRODUCTION
Basic Definitions
Organization of the Text
SECTION I - SYSTEM INTERFACES
SENSOR TECHNOLOGY
Introduction
Objectives
Measurement Environment
Representative Sensor Technology
Smart Sensor Technology
MODELING AND CALIBRATION
Background
Objectives
Basics
Error Types
Statistical Concepts
Least Squares Fitting
COMPUTER SYSTEMS
Introduction
Objectives
Telemetry Database
User Interface Systems
Computer Organization
SIGNAL PROCESSING
Introduction
Objectives
Sampled versus Continuous Data
Signal Types
Bandlimiting
Sampling Theorem
Filter Design
Software Filter Design
Quantization
Sampling Hardware
SECTION II - DATA TRANSPORT, TIMING, AND SYNCHRONIZATION
TELEMETRY FRAMES AND PACKETS
Introduction
Objectives
Background
Telemetry Frames
Synchronization Codes
Telemetry Frame Design
Packet Telemetry
MIL-STD-1553 Packets
CCSDS Packets
Data Networking Packets
Command Processor Interface
Formatting for Transmission
TELEMETRY DATA SYNCHRONIZATION
Introduction
Objectives
Synchronization Process
Carrier Synchronization
Bit Synchronization
Frame Synchronization
Error Detection
Data Sequencing
TIME AND POSITION DETERMINATION
Introduction
Objectives
Definition of Time
Time Code Formats
Global Positioning System: Determining Time and Position
COMMAND SYSTEMS
Introduction
Objectives
Command Composition
Command Strategies
Verify-and-Execute Command Protocol
Operational Considerations
Packet Command Systems
SECTION III - DATA TRANSMISSION TECHNIQUES
MODULATION TECHNIQUES
Introduction
Objectives
Analog Modulation
Digital Modulation
Bandwidth Estimates
System Planning
Digital Transmission with Analog Modulators
MICROWAVE TRANSMISSION
Introduction
Objectives
Background
Antenna Basics
Free Space Propagation
Atmospheric, Sun, and Ground Effects
Rain Effects Modeling
Mobile Propagation
Each chapter also contains References and Problems
