| Preface | xiii |
1 | Introduction | 1 |
1.1 | Prolegomena | 1 |
1.2 | The General Communication System | 3 |
1.3 | The General Radar System | 7 |
1.4 | Comparison of the Two Systems | 9 |
2 | Signal Analysis | 12 |
2.1 | Introduction | 12 |
2.2 | Some Fundamental Notions about Signals | 13 |
2.3 | Generalized Functions | 18 |
2.4 | Signal Vector Spaces: Expansions | 22 |
2.4.1 | General Expansions: The Orthogonality Criterion | 26 |
2.4.2 | Expansions on an Orthonormal Set of Signals | 28 |
2.5 | Fourier Series: Discrete Spectra | 30 |
2.6 | The Fourier Transform: Spectra | 39 |
2.7 | Properties of the Fourier Transform | 45 |
2.8 | Fourier Transforms of Power Signals: Filters | 50 |
2.9 | Duration, Bandwidth, and the Uncertainty Relation | 56 |
2.10 | Correlation (Ambiguity) Functions | 61 |
| Problems, Questions, and Extensions | 67 |
3 | Amplitude Modulation: Communication Systems | 71 |
3.1 | Introduction | 71 |
3.2 | The Double-Sideband Suppressed Carrier System | 73 |
3.3 | The Single-Sideband Suppressed Carrier System | 79 |
3.4 | The Double-Sideband Large Carrier System | 85 |
3.5 | Frequency Multiplexing and the Superheterodyne Receiver | 90 |
3.6 | Other Amplitude Modulation Systems: Comparisons | 95 |
3.6.1 | Compatible Single-Sideband System | 96 |
3.6.2 | SSB with Carrier | 96 |
3.6.3 | Carrier Reinsertion Systems | 97 |
3.6.4 | Vestigial Sideband Systems | 98 |
| Problems, Questions, and Extensions | 101 |
4 | Amplitude Modulation: Radar Systems | 104 |
4.1 | Introduction | 104 |
4.2 | Antenna Characteristics | 105 |
4.3 | A Word about Wave Propagation | 109 |
4.3.1 | Reflection | 109 |
4.3.2 | Refraction | 110 |
4.3.3 | Attenuation | 111 |
4.4 | The Radar Equation and Its Importance | 111 |
4.5 | The Pulse Radar System | 114 |
4.6 | The Continuous-Wave Radar System | 124 |
4.7 | The Pulse-Doppler Radar System | 131 |
4.8 | The Pulse Radar System with Moving Target Indication | 135 |
| Problems, Questions, and Extensions | 137 |
5 | Angle Modulation: Communication Systems | 141 |
5.1 | Introduction | 141 |
5.2 | Preliminary Notions of FM and PM | 142 |
5.3 | Narrowband FM and PM | 148 |
5.4 | Wideband FM | 150 |
5.5 | FM Modulating and Demodulating Devices | 156 |
5.5.1 | Modulation | 157 |
5.5.2 | Demodulation | 158 |
| Problems, Questions, and Extensions | 159 |
6 | Angle Modulation: Radar Systems | 163 |
6.1 | Introduction | 163 |
6.2 | Frequency-Modulated CW Radar | 164 |
6.3 | The Chirp Radar System | 169 |
| Problems, Questions, and Extensions | 176 |
7 | Analog Pulse Modulation: Communication Systems | 178 |
7.1 | Introduction | 178 |
7.2 | Sampling Theorems | 179 |
7.3 | Practical Sampling Methods | 185 |
7.3.1 | Natural Sampling | 185 |
7.3.2 | Flat-Top Sampling | 187 |
7.4 | Pulse Amplitude Modulation Communication Systems | 188 |
7.5 | Pulse Duration Modulation Systems | 191 |
7.6 | Pulse Position Modulation Systems | 193 |
7.7 | Time-Division Multiplexing: Comparisons with FDM | 194 |
| Problems, Questions, and Extensions | 198 |
8 | Pulse Code Modulation: Communication Systems | 201 |
8.1 | Introduction | 201 |
8.2 | Quantization | 202 |
8.3 | Coding | 204 |
8.4 | The PCM System | 206 |
8.5 | Variations on the PCM Theme | 210 |
8.5.1 | Delta Modulation | 210 |
8.5.2 | Differential PCM | 213 |
| Problems, Questions, and Extensions | 214 |
9 | Mixed Modulation: Communication Systems | 217 |
9.1 | Introduction | 217 |
9.2 | The Amplitude-Shift Keying System | 218 |
9.3 | The Phase-Shift Keying System | 220 |
9.4 | The Frequency-Shift Keying System | 222 |
9.5 | The Differential Phase-Shift Keying System | 225 |
9.6 | Multilevel Mixed Systems | 227 |
9.7 | Spread-Spectrum Systems | 230 |
9.7.1 | Direct-Sequence Systems | 230 |
9.7.2 | Frequency-Hopping Systems | 234 |
9.7.3 | The Code-Division Multiple-Access System | 237 |
| Problems, Questions, and Extensions | 239 |
10 | Mixed Modulation: Radar Systems | 241 |
10.1 | Introduction | 241 |
10.2 | Pulse Compression Radar (Code Modulation) or Radar Spread-Spectrum Systems | 241 |
10.2.1 | Phase-Coded PC Systems | 242 |
10.2.2 | Frequency-Coded PC Systems | 244 |
10.3 | Target-Tracking Radar Systems: General Remarks | 245 |
10.4 | Range-Tracking Radar | 246 |
10.5 | Angle Tracking: Conical-Scan Radar | 248 |
10.6 | Angle Tracking: Monopulse Radar | 254 |
| Problems, Questions, and Extensions | 258 |
11 | Probability and Random Variables | 260 |
11.1 | Introduction | 260 |
11.2 | Basic Probability Theory | 261 |
11.2.1 | Single Experiment | 262 |
11.2.2 | Two or More Experiments | 266 |
11.2.3 | Conditional Models: Independence | 268 |
11.3 | Single Random Variables | 272 |
11.4 | Multiple Random Variables: Conditional Models | 279 |
11.5 | Transformation of Random Variables | 281 |
11.6 | Expected Values or Averages | 284 |
11.6.1 | Single R.V. | 284 |
11.6.2 | Functions of a Single R.V. | 288 |
11.6.3 | Two or More R.V.'s | 290 |
11.6.4 | Functions of Two or More R.V.'s | 293 |
11.6.5 | Conclusion for Section 11.6 | 295 |
| Problems, Questions, and Extensions | 295 |
12 | Stochastic Processes | 299 |
12.1 | Introduction | 299 |
12.2 | Stochastic Processes: Definitions and Complete Descriptions | 299 |
12.3 | Stochastic Processes: Partial Models | 303 |
12.4 | Wide-Sense Stationary Processes | 306 |
12.5 | Models of Two or More Processes | 311 |
12.6 | Ergodic Stationary Processes | 313 |
12.7 | Random Processes through Linear Systems | 315 |
12.8 | Some Typical Noise Models | 319 |
12.8.1 | White Noise | 319 |
12.8.2 | Low-Frequency Noise | 321 |
12.8.3 | Narrowband Noise | 321 |
| Problems, Questions, and Extensions | 323 |
13 | Noise in Communication Systems | 327 |
13.1 | Introduction | 327 |
13.2 | Method of Analysis: The Signal-to-Noise Ratio | 328 |
13.3 | The DSB System | 329 |
13.4 | The SSB System | 331 |
13.5 | The AM System | 332 |
13.6 | The FM System | 334 |
13.7 | The PCM System | 337 |
13.8 | Signal-to-Noise Ratio Comparisons | 343 |
13.9 | Mixed Systems: The Probability of Error Criterion | 344 |
| Problems, Questions, and Extensions | 347 |
14 | Noise in Radar Systems | 349 |
14.1 | Introduction | 349 |
14.2 | Detection in the Presence of Noise | 350 |
14.3 | The Radar Equation Again | 353 |
14.4 | Range Estimation of a Single Target | 354 |
14.5 | Velocity Estimation of a Single Target | 359 |
14.6 | Simultaneous Estimation of Range and Velocity for a Single Target | 360 |
14.7 | Target Resolution: Ambiguity Functions | 362 |
| Problems, Questions, and Extensions | 368 |
15 | Electronic Warfare | 371 |
15.1 | Introduction | 371 |
15.2 | Electronic Reconnaissance | 373 |
15.2.1 | Introduction | 373 |
15.2.2 | A General ER System | 375 |
15.2.3 | Receivers | 377 |
15.2.4 | Estimation of Direction and Location | 378 |
15.3 | ECM and ECCM for Communication Systems | 381 |
15.4 | ECM and ECCM for Radar Systems | 384 |
15.4.1 | Introduction | 384 |
15.4.2 | Noise Jamming | 384 |
15.4.3 | Deception Jamming | 388 |
15.4.4 | ECCM in Radar Systems | 392 |
| Problems, Questions, and Extensions | 392 |
Appendix A | Frequency Allocations | 394 |
Appendix B | Gaussian P.D.F. Table | 395 |
| Bibliography | 396 |
| Index | 403 |