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gnss-data-availability

A collection of PowerShell utilities for checking the presence or absence of GNSS data in online archives. Scripts support multiple protocols (HTTP/FTP) and generate structured reports to identify missing data periods across different stations and timeframes.

Available Scripts

CDDIS GNSS Data Availability Checker

The CDDIS GNSS Data Availability Checker is a PowerShell script that checks availability of GNSS observation data from NASA's CDDIS (Crustal Dynamics Data Information System) FTP archives. The script supports:

  • Daily, hourly, or high-rate (15-minute) GNSS data checks
  • RINEX versions 2 and 3 (including RINEX version 4)
  • Parallel processing for improved performance
  • CSV and text report outputs

Basic Usage

.\script\CDDIS_GNSS_Data_Availability_Checker.ps1 -stationId "BRST" -startDate "2025-01-01" -endDate "2025-01-31" -dataType "daily" -rinexVersion 3

For more detailed information, parameter descriptions, and advanced usage examples, please refer to the CDDIS GNSS Data Availability Checker documentation.

IGN ESP GNSS Data Availability Checker

The IGN ESP GNSS Data Availability Checker is a PowerShell script designed to check the availability of hourly GNSS observation data from the Spanish National Geographic Institute (IGN) HTTPS archive. The script supports:

  • Hourly (1-second) data checks
  • HTTPS web requests for checking availability
  • CSV and text report outputs

Basic Usage

.\script\IGN_ESP_GNSS_Data_Availability_Checker.ps1 -stationId "BCL1" -startDate "2025-01-01" -endDate "2025-01-05"

For more detailed information, parameter descriptions, and usage examples, please refer to the IGN ESP GNSS Data Availability Checker documentation.

PGC CANADA GNSS Data Availability Checker

The PGC CANADA GNSS Data Availability Checker is a PowerShell script designed to check the availability of high-rate (15-minute interval) GNSS observation data from the Natural Resources Canada (NRCan) PGC (Pacific Geoscience Centre) anonymous FTP archive. The script supports:

  • High-rate (15-minute) data checks (RINEX v3)
  • Parallel processing for improved performance
  • FTP directory caching
  • CSV and text report outputs

Basic Usage

.\script\PGC_CAN_GNSS_Data_Availability_Checker.ps1 -stationId "ALBH" -startDate "2024-01-01" -endDate "2024-01-10"

For more detailed information, parameter descriptions, and usage examples, please refer to the PGC CANADA GNSS Data Availability Checker documentation.