1.0 Signals Collection
1.1 Introduction
1.2 Important Terms
1.3 Signals Collection Functions and Processes
1.4 The Disciplines within Signals Collection
2.0 A Brief History of Signals Collection
2.1 World War 1 Radio Signals Collection
2.2 World War II Signals Collection, Bletchley Park and Enigma
2.3 NSA, GCHQ and the Cold War
2.4 NRO history of GRAB
3.0 Signals and Communication Fundamentals
3.1 Electromagnetic propagation of waveforms
3.2 Transmission and Antenna Theory
3.3 Communications Channels
3.4 Basic Modulation Theory
3.5 Collection Platforms on the Ground and in the Air and in Space
3.6 Kepler’s laws
3.7 Orbital parameters
3.8 Precession of orbital parameters
4.0 Radar Fundamentals
4.1 Transmission and reception beam patterns
4.2 Radar beamwidth
4.3 Radar equation
4.4 Data Link Analysis
4.5 Electronic Counter Measures (ECM)
4.6 The Jamming Game
5.0 Geolocation of Non-Cooperative Emitters
5.1 Angle of Arrival Methods
5.2 Time Difference of Arrival Methods
5.3 Frequency Difference of Arrival Methods
5.4 Fusion of Geolocation Methods
6.0 Signal Detection and Estimation
6.1 Analog and Digital Signal Processing
6.2 Signals, Noise, Modulation, and the Spectrum
6.3 Detection Theory
6.4 Linear Recursive Sequences
6.5 Spread Spectrum Signals
7.0 Cryptology Fundamentals
7.1 Cryptologic Systems
7.2 Private Key Encryption Methods
7.3 Public Key Encryption Methods
7.4 Methods of Decryption
8.0 Signals Analysis Fundamentals
8.1 Spectral Search and Analysis
8.2 Traffic Analysis
8.3 Content Analysis
8.4 Content Decryption
8.5 Reporting Signals
8.6 Fusion
9.0 Cyber Operations
9.1 Computer Network Operations
9.2 The Role of Signals Collection
10.0 The Future of Signals Collection
10.1 Challenges Posed by Global Communications
10.2 Legal and Policy Considerations for Signals Collection
10.3 Signals Collection Technologies
Glossary of Terms
APPENDIX: Declassified Use Cases