# 2-D weighted least-squares phase unwrapping

## Abstract

Weighted values of interferometric signals are unwrapped by determining the least squares solution of phase unwrapping for unweighted values of the interferometric signals; and then determining the least squares solution of phase unwrapping for weighted values of the interferometric signals by preconditioned conjugate gradient methods using the unweighted solutions as preconditioning values. An output is provided that is representative of the least squares solution of phase unwrapping for weighted values of the interferometric signals.

- Inventors:

- (Placitas, NM)
- (Albuquerque, NM)

- Issue Date:

- Research Org.:
- AT & T CORP

- OSTI Identifier:
- 869930

- Patent Number(s):
- 5424743

- Assignee:
- U.S. Department of Energy (Washington, DC) SNL

- DOE Contract Number:
- AC04-76DP00789

- Resource Type:
- Patent

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 2-d; weighted; least-squares; phase; unwrapping; values; interferometric; signals; unwrapped; determining; squares; solution; unweighted; preconditioned; conjugate; gradient; methods; solutions; preconditioning; output; provided; representative; weighted values; phase unwrapping; interferometric signals; /342/

### Citation Formats

```
Ghiglia, Dennis C., and Romero, Louis A.
```*2-D weighted least-squares phase unwrapping*. United States: N. p., 1995.
Web.

```
Ghiglia, Dennis C., & Romero, Louis A.
```*2-D weighted least-squares phase unwrapping*. United States.

```
Ghiglia, Dennis C., and Romero, Louis A. Sun .
"2-D weighted least-squares phase unwrapping". United States. https://www.osti.gov/servlets/purl/869930.
```

```
@article{osti_869930,
```

title = {2-D weighted least-squares phase unwrapping},

author = {Ghiglia, Dennis C. and Romero, Louis A.},

abstractNote = {Weighted values of interferometric signals are unwrapped by determining the least squares solution of phase unwrapping for unweighted values of the interferometric signals; and then determining the least squares solution of phase unwrapping for weighted values of the interferometric signals by preconditioned conjugate gradient methods using the unweighted solutions as preconditioning values. An output is provided that is representative of the least squares solution of phase unwrapping for weighted values of the interferometric signals.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {1995},

month = {1}

}

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