Supplementry Issue 2, 2001

Frequency Standards and Clocks

A U.S. Laser Cooled Atomic Clock System for Space
D.B. Sullivan, T.P. Heavner, L.W. Hollberg, S.R. Jefferts, D.M. Meekhof, T.E. Parker,
W.D. Phillips, S.L. Rolston, H.G. Robinson, J.H. Shirley, F.L. Walls, N. Ashby,
W.M. Klipstein, L. Maleki, D.J. Seidel, R.J. Thompson, S Wu, L. Young, R.F.C. Vessot,
E.M. Mattison and A. DeMarchi
1
Ultra Stable Clocks in Space : the ACES Project
N. Dimarcq, Ch. Salomon, M. Abgrall, A. Clairon, P. Laurent, P. Lemonde,
G. Santarelli, P. Uhrich, L. G. Bernier, G. Busca, A. Jornod, P. Thomann,
E. Samain, P. Wolf, P. Aubry, F. Gonzalez, Ph. Guillemot, S. Leon,
F. Nouel, Ch. Sirmain and S. Feltham
9
Development of Frequency Standards Based on a Continuous Beam of Cesium Atoms
Ho Seong Lee, Young Ho Park, Sang Eon Park and Taeg Yong Kwon
20
Collimation of Cs Fountain with a Single Infrared Laser
Masatoshi Kajita and Takao Morikawa
27
Progress on the NML Trapped Ion Frequency Standards
Bruce Warrington, Peter Fisk, Malcom Lawn and Michael Wouters
32
Metrological Research at the Politecnico di Torino
A. De Marchi, G.A. Costanzo, M. Ortolano, C. Calosso, F. Periale
42
An Ultra-Miniature Rubidium Frequency Standard
Y. Koyama, H. Matsuura, K. Atsumi, K. Nakamuta, M. Sakai Y. Nakajima and
I. Maruyama
50
Microwave Synthesisers for Atomic Frequency Standards
A. Sen Gupta, F.L. Walls, J.F. Garcia Nava and C. Nelson
59
Cesium Fountain Clock with Laser Cooling in Squeezed Vacuum
Ashish Agarwal, G.M. Saxena, A. Chatterjee and B.S. Mathur
70
Cs Saturated Absorption Spectrometer with Diode Laser at 852 nm
Santa Chawla, A. Sen Gupta, Sarika Pugla, B.K. Roy, A.K. Kanjilal and S.A. Ahmad
77
Some Studies on the Long Term Behaviour of Precision Quartz Oscillators
S.K. Kaul, M. Kothari, I.K. Kaul, R. Koul and C.L. Bhat
85
Development of HTS Based Shielded Dielectric Resonator for Frequency Standard
N.D. Kataria and K.S. Daya
89

Hydroxyl Defects in Quartz Crystals : Their Radiation Effects and thier Application in Frequency Control
Harish Bahadur

94

Time and Frequency Transfer Techniques

Time Transfer Methods in TAI : Present and Future
Elisa Felicitas Arias

107
Comparison of High-Precision Time Transfer Techniques
Demetrios Matsakis, Lara Schmidt, Ken Senior, Ed Powers and Jim De Young
115

High Stability Frequency Broadcast Through INSAT
C.R. Subrahmanya, R. Ganesan, N.V.G. Sarma, S. Rangarajan and S. Sukumar
133
Design of a Time & Frequency Dissemination System Using Mexican
Geostationary Satellites
V. Molina, P. Fortier, J.M. Lopez and H. Jardon
138
Results of Differential Mode of Operation of the Standard Time & Frequency
Signal (STFS) Broadcast via INSAT
A. Sen Gupta, A.K. Hanjura, B.S. Mathur, R. Koul, S.K. Kaul, I. K. Kaul,
M. Kothari, H.C. Goel, C.L. Bhat and S. Das
145
Synchronisation of Non-Cosited Shortwave Transmitters using INSAT STFS Service
Ratna Chakrabarty
157
STFS based Time Synchronised Real Time Load Despatching in the Western Region
Anjan Roy, M. G. Raoot and P. Pentayya
165
The Two-Way Time Transfer Activities at TL, Taiwan
H.T. Lin, P.C. Chang, C.S. Liao, H. Yukawa, K. Mano and M. Imae
175
Two Way Satellite Time and Frequency Transfer (TWSTFT)
Experiment Between Ahmedabad and Delhi using INSAT 3B
M.R. Sivaraman, S. Nagrare, Soumi De, R. A. Dholaria, V.S. Palsule,
A.S. Durai, V.V. Paranjpe, M.L. Hasija, Kalishankar and Gurmit Singh
181
Results of TWSTFT Experiment Conducted between Ahmedabad and Delhi
Using INSAT 3B
Sangeeta Nagrare, Soumi De, R.A. Dholaria and M.R. Sivaraman
187
Calibration of the Earth Station Delays for TWSTFT Experiment using a
Transportable Earth Station
Sangeeta Nagrare, R.A. Dholaria, Soumi De, M.R. Sivaraman,
A.S. Durai, A.S. Buch and R.N. Goude
193
Time & Frequency Transfer in Distributed Communication
Networks over Satellite Links
G.M. Rathar and M.S. Shah
199

Time and Frequency Metrology

Optical Generation of Microwave Signal through Heterodyne Optical PLL
B.N. Biswas and A. Bhattacharya

207
Computation of Time-Domain Frequency Stability and Jitter from PM Noise Measurements
W.F. Walls and F.L. Walls
218

1/f PM and AM Noise in Amplifiers and Oscillators
F.L. Walls, E.S. Feree-Pikal and S.R. Jefferts

226
Activities in the Time & Frequency Laboratory of the CSIR-
National Metrology Laboratory
E.L. Marais
243
A New PLL for Disciplining the Frequency Standard
G. Kramer, P. Banerjee and W. Klische
249
On the Performance of a Dividerless Frequency Synthesizer
with Aided Acquisition Techniques
B.C. Sarkar and A. Hati
261

GPS/ Glonass Related Studies

Traceable Calibration of a GPS Disciplined Oscillator
Staffan Johansson and Dave Coombes
271
Time Transfer Using GLONASS P-Code Measurement
H.M. Peng, P.C. Chang, C.S. Liao and M Imae
281
Global Positioning System Receiver Performance Onboard Indian Remote Sensing Satellite
K.V. Prasad, S.G. Basu and S. Pal
286
Multi-channel GPS Receiver Development and Evaluation at the CSIR-National Metrology Laboratory
E.L. Marais
293
Synchronization of Remotely Located Slave Clock by using GPS Time Transfer Receiver
Young Bum Kim, Dong Chul Park and Nak Sam Chung
302
Time Synchronisation Requirements for Implementation of Wide Area Differential GPS (WADGPS) over Indian Ocean Region (IOR)
M.R. Sivaraman
307
Simultaneous Measurements of TEC in Multiple Directions
Using Dual Frequency GPS Receiver
A.D. Sarma, V. Venkata Rao and G Sasi Bhushana Rao
313
Placement of WAAS Reference Station (WRS) for Indian Airspace
Arjun Singh and D.C. Reddy
317
Improvement of the Accuracy of GPS Time
P Banerjee, Anindya Bose and B.S. Mathur
326
Precision Time Keeping : Its Applications in Astronomy
C.L. Bhat and R. Koul
335
Giant Meterwave Radio Telescope and VLBI Observations
M.R. Sankararaman and S. Ananthakrishnan
344

Timekeeping and Calendars

Time Concepts in Vedic Astronomy
J.N. Pandey
335
Decimale Calender : Measuring Year by the Weeks and Decimalised Hour of the Day
Brij Bhushan Vij
363