Target Detection by Marine RadarRadar is a legal necessity for the safe navigation of merchant ships, and within vessel traffic services is indispensable to the operation of major ports and harbours. Target Detection by Marine Radar concentrates solely on civil marine operations and explains how marine surveillance radars detect their targets. The book is fully illustrated and contains worked examples to help the reader understand the principles underlying radar operation and to quantify the importance of factors such as the technical features of specific equipment, the weather, target reflection properties, and the ability of the operator. The precision with which targets are positioned on the radar screen and with which their progress is tracked or predicted depends on how definitely they have been detected, therefore a whole chapter has been devoted to the issue of accuracy. The various international regulations governing marine radar are examined, a brief historical background is given to modern day practice and the book doses with a discussion of the ways in which marine radar may develop to meet future challenges. |
Contents
1 Introduction | 1 |
2 The system and the transmitter | 31 |
3 Radar receiver | 95 |
4 Echo strength in free space | 137 |
5 Environmental effects on propagation | 151 |
6 Multipath of point targets | 207 |
7 Passive point targets | 237 |
8 Active targets | 285 |
11 Noise clutter and interference | 415 |
12 Detection | 453 |
13 Accuracy of position and track | 523 |
14 Spreadsheet calculations | 557 |
15 Worked examples | 585 |
16 Future possibilities | 615 |
A1 Glossary | 637 |
A2 Statistics details | 647 |
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Common terms and phrases
9 GHz band amplifier amplitude antenna aperture approximation attenuation azimuth bandwidth baseband beam beamwidth calculation Chapter component curve dB m² dB/decade decibels demodulator detection cell detection range device diffraction region display echo strength effective EIRP error example extended target false alarm feeder Figure filter fluctuation free space frequency gives Gmax grazing angle illuminated indirect ray integration interference interrogation lobe loss magnetron marine radar maximum microwave multipath factor navigation noise noise figure nulls operator parameters peak performance phase plane plots point target polarisation precipitation clutter pulse pulselength racon radar band radar cross section radar receiver radiation ramarks range equation range scale reduced reflection reflection coefficient reflector refraction response scan scanner sea clutter Section ship short range sidelobes signal spreadsheet Swerling thermal noise threshold transmitter usually voltage wave waveguide wavelength