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October 23, 2009

GPS Basics

1 INTRODUCTION
2 GPS made simple
2.1 The principle of measuring signal transit time
2.1.1 Generating GPS signal transit time
2.1.2 Determining a position on a plane
2.1.3 The effect and correction of time error
2.1.4 Determining a position in 3-D space
3 GPS, THE TECHNOLOGY
3.1 Description of the entire system
3.2 Space segment
3.2.1 Satellite movement
3.2.2 The GPS satellites
3.2.3 Generating the satellite signal
3.3 Control segment
3.4 User segment
4. THE GPS NAVIGATION MESSAGE
4.1 Introduction
4.2 Structure of the navigation message
5. CALCULATING POSITION
5.1 Introduction
5.2 Calculating a position
5.2.1 The principle of measuring signal transit time
5.2.2 Linearisation of the equation
5.2.3 Solving the equation
5.2.4 Summary
5.2.5 Error consideration and satellite signal
6. Co-ordinate systems
6.1 Introduction
6.2 Geoids
6.3 Ellipsoid and datum
6.4 Planar land survey co-ordinates, projection
7. Differential-GPS (DGPS)
7.1 Introduction
7.2 DGPS based on the measurement of signal transit
time
7.3 DGPS based on carrier phase measurement
8. DATA FORMATS AND HARDWARE interfaces
8.1 Introduction
8.2 Data interfaces
8.3 Hardware interfaces
9. GPS RECEIVERS
9.1 Basics of GPS handheld receivers
9.2 GPS receiver modules
10 GPS Applicatons
10.1 Introduction
10.2 Description of the various applications

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Electrical Exterior Facilities

File : pdf, 3.34 MB, 201 pages
TOC
CHAPTER 1. INTRODUCTION
I-PRIMARY CONSIDERATIONS
II-SAFETY
III-AVOIDING PROBLEMS
CHAPTERS 2. INSPECTION AND TESTS
I-PERFORMANCE
II-REQUIREMENTS
CHAPTER 3. TRANSMISSION AND DISTRIBUTION SUBSTATIONS
I-GOVERNING CONSIDERATIONS
II-STRUCTURE MAINTENANCE
III-SUBSTATION YARDS
IV-INSULATORS
V-BUS STRUCTURES
VI-INSTRUMENT TRANSFORMERS
VII-BUSHINGS
CHAPTER 4. OVERHEAD DISTRIBUTION
I-ASSOCIATED OVERHEAD DISTRIBUTION GUIDANCE
II-DEFINING VOLTAGE NOMENCLATURE
III-TYPES OF MAINTENANCE
IV-WOOD POLES
V-CROSSARMS, BRACES, AND PLATFORMS
VI-MAINTENANCE WOOD PRESERVATION
VII-METAL POLES
VIII-CONCRETE POLES
IX-OVERHEAD OPEN WIRE CONDUCTORS
X-OVERHEAD CABLE
XI-CONDUCTOR CONNECTIONS
XII-POLE-LINE INSULATORS
XIII-GUYS
XIV-TREE TRIMMING
XV-LIVE-LINE MAINTENANCE
XVI-AERIAL LIFT REQUIREMENTS
Aerial lift construction
Aerial lift specificss
CHAPTER 5. UNDERGROUND AND SUBMARINE CABLES
I-ASSOCIATED GUIDANCE
II-SAFETY PRECAUTIONS
III-INSPECTION
IV-MAINTENANCE AND REPAIR OF DUCT SYSTEMS
V-CABLE FAULTS AND FAULT LOCATIONS
VI-CABLE REPAIR
VII-CABLE TESTING
IX-UNDERGROUND CORROSION CONTROL
CHAPTER 6. OUTDOOR LIGHTING
I-LIGHTING AND CIRCUIT TYPES
II-MULTIPLE TYPE LIGHTING
III-LIGHT DISTRIBUTION
IV-SERIES TYPE AIRFIELD LIGHTING
CHAPTER 7. TRANSFORMERS AND REGULATORS
I-CONSIDERATIONS
II-MAINTENANCE
CHAPTER 8. OVERCURRENT PROTECTIVE AND SWITCHING DEVICES
I-CONSIDERATIONS
II-FUSES
III-SWITCHES
IV-CIRCUIT BREAKERS
V-MISCELLANEOUS DEVICES
CHAPTER 9. OVERVOLTAGE PROTECTION
I-CONSIDERATIONS
II-SURGE (LIGHTNING) ARRESTERS
III-OTHER DEVICES
CHAPTER 10. GROUNDING
I-CONSIDERATIONS
II-MAINTENANCE
III-TESTING
CHAPTER 11. RELAYS AND CONTROLS
I–RELAYS, ELECTRIC POWER APPARATUS
II-CONTROLS
CHAPTER 12. INSTRUMENTS AND METERS
I-CONSIDERATIONS
II-PREVENTIVE MAINTENANCE
III-CALIBRATION AND ADJUSTMENT
IV-REPAIRS
V-TROUBLESHOOTING
CHAPTER 13. POWER CAPACITORS
I-CONSIDERATIONS
II-MAINTENANCE AND INSPECTION
III-TESTS
CHAPTER 14. STORAGE BATTERIES
I-CONSIDERATIONS
II-FLOODED LEAD-ACID BATTERY MAINTENANCE
III-FLOODED LEAD-ACID BATTERY CHARGING
IV-VALVE-REGULATED LEAD-ACID CELL BATTERIES
V-Nickel-cadmium cell batteries
VI-CHECKS AND TROUBLESHOOTING
VII-BATTERY CHARGING EQUIPMENT
VIII-PLACING A NEW BATTERY IN SERVICE
IX-PUTTING A BATTERY IN STORAGE
X-REPLACEMENT AND DISPOSAL
CHAPTER 15. TOOLS AND EQUIPMENT
I-USE
II-HAZARDOUS MATERIAL PROCEDURES
III-PROTECTIVE EQUIPMENT
IV-CLIMBING EQUIPMENT
V-LIVE-LINE TOOLS
VI-HAND TOOLS
VII-ROPE
VIII-LARGE PORTABLE AND MOBILE EQUIPMENT
IX-ELECTRICAL INSPECTING AND TESTING EQUIPMENT
CHAPTER 16. ELECTRICAL SERVICE INTERFERENCE
I-DISTURBANCE PRODUCERS
II-ELECTROMAGNETIC INTERFERENCE
III-HARMONIC INTERFERENCE
CHAPTER 17. MAINTENANCE SCHEDULES
I-CONSIDERATIONS
II-SCHEDULES
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Oscillator Resonator Design Tutorial

File : pdf, 473 KB, 20 pages
TOC
1 ABSTRACT
2 INTRODUCTION
3 RESONATORS [1]
3.1 LUMPED ELEMENT
3.2 TWO ELEMENT RESONATOR CIRCUITS
3.3 THREE ELEMENT RESONATOR CIRCUITS
3.4 FOUR ELEMENT RESONATOR CIRCUITS
3.5 COAXIAL CABLE RESONATOR [2]
3.6 DESIGN EXAMPLE OF A COAXIAL CABLE RESONATOR
3.7 CALCULATION OF RESONATOR Q FACTOR
3.8 COAXIAL RESONATOR [3]
3.9 DESIGN EXAMPLE OF A COAXIAL RESONATOR [4,5,6]
3.10 DIELECTRIC RESONATOR [7]
3.11 DESIGN EXAMPLE OF A DIELECTRIC RESONATOR
3.12 COUPLING OF RESONATOR TO MICROSTRIP LINE [8]
3.13 TRANSMISSION LINE RESONATOR [9]
3.14 DESIGN EXAMPLE OF INDUCTOR USING A TRANSMISSION LINE
3.15 CALCULATION OF EFFECTIVE RELATIVE PERMITTIVITY [10]
3.16 INTER-DIGITAL MICRO-STRIP CAPACITORS [11]
3.17 VARACTORS [12]
3.18 DESIGN EXAMPLE OF A VARACTOR DIODE
3.19 TUNING RATIOS
3.20 CIRCUIT Q
3.21 TEMPERATURE VARIATION
3.22 TEMPERATURE COMPENSATION
4 LOADED & UNLOADED Q [13,14,15]
4.1 UNLOADED Q
4.2 LOADED Q
4.3 Q TRANSFORMATION
4.4 INSERTION LOSS OF RESONATOR
4.5 DESIGN EXAMPLE FOR A VARACTOR
CONTROLLED RESONATOR
4.6 CONCLUSION/SUMMARY

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