Science Horizons, Incorporated

The WinVISOR (Windows-based VIew data Send Or Receive) software package is a text/graphics interface to all AIM24S digitizers to aid in their installation, testing, and maintenance.

The software installs on a PC with Windows and a graphics display, and is especially helpful when installed on a laptop system for field personnel at remote sites to monitor AIM24S, AIMA-PC, and GPS status and configuration, change the configuration, and monitor the analog sensor connected to the AIM24S.

With WinVISOR, it is no longer necessary to rely on Data Center staff to provide feedback on data quality. Field engineers can ensure that the digitizer and sensor are operational before departing the site.

The XAVE package provides real-time data acquisition and near-real-time data display, automatic analysis, authentication, databasing, and archiving to tape. Data is stored in the CSS 3.0 data format for analysis using VIXTA or remote user access via the GSE-OS package. Data may be forwarded to the IDC or NDC via the CD-1.x protocol, or in native format to another site running XAVE.

VIXTA provides the user with the ability to perform off-line data analysis, editing, and segmentation. The program displays waveform data from any number of CSS 3.0 databases. The user may zoom in and out on specific sections of data, apply an adjustable Butterworth filter to the displayed data, and remove the DC offset from the displayed data. Spectral analysis may be performed on segments of data. The program also provides editing of event phase arrivals.

GSE Open Station software offers a reliable means of supporting automated, on-demand access to seismic data. GSE-OS verifies and processes incoming AutoDRM requests, executes commands, and returns results in IMS 1.0/2.0 format. GSE-OS supports the IMS 1.0 and 2.0 request/response grammar. Data requests are delivered to and responses are sent by GSE-OS through any standard electronic mail handler.

The Data Collection Center (DCC) software applies field-tested, Commercial-Off-The-Shelf (COTS) software to the challenges of receiving and archiving CD1.0 and CD1.1 data streams from the International Data Center, National Data Centers, or other participating organizations of the Comprehensive Test Ban Treaty Organization (CTBTO).

In designing DCC, Science Horizons set and met the following objectives:

• Read one or more CD1.0/1.1 data streams from many sources
• Provide graphical real-time system monitoring supported by user-friendly software interfaces
• Provide flexibility through standard interfaces, particularly the CD1.0/1.1 format and CSS 3.0 flat file database
• Minimize data latency, driven only by the constraints of the station instrumentation and the communications links and not by system performance
• The data acquisition function must be reliable and maintainable, requiring minimal support
• The hardware and software architecture must be extensible, growing with the need to acquire additional station data and facilitating reconfiguration to support evolving mission needs
• Provide forwarding capability to other data centers, with or without built-in time delays

The DCC and DCC-Lite systems may be distributed over a network of workstations, typically configured so that one discloop processing workstation is acquiring and processing data for up to 256 channels as CPU power permits (based on dual processor SPARCstation 10 experience). The DCC and DCC-Lite software consists of components that manage arriving data, develop data products, and provide user-friendly operations interfaces.