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词条 SASS-C
释义

  1. Introduction

  2. VERIF

      Usage    Modules    History    SASS-C v6    VERIF v7    VERIF v8  

  3. PREDICT

      History  

  4. References

  5. Further reading

{{Multiple issues|{{primary sources|date=December 2011}}{{context|date=December 2011}}{{abbreviations|date=December 2011}}
}}{{Infobox software
| name = SASS-C VERIF
| screenshot = Eurocontrol logo 2010.svg
| screenshot size = 150px
| developer = Eurocontrol
| latest_release_version = 8.1
| latest_release_date = November 11, 2018
| operating_system = Linux
| genre = Air Traffic Management Surveillance sensor performance assessment and trajectory reconstruction (tracker)
| license = Eurocontrol Licence - Software available on request
| website = [1]
}}{{Infobox software
| name = SASS-C PREDICT
| screenshot = Eurocontrol logo 2010.svg
| screenshot size = 150px
| developer = Eurocontrol
| latest_release_version = 2.3.1
| latest_release_date = March 22, 2018
| operating_system = Linux
| genre = Theoretical calculation of surveillance infrastructure performance
| license = Eurocontrol Licence - Software available on request
| website = [1]
}}SASS-C is an acronym for "Surveillance Analysis Support System for ATC-Centre". SASS-C Service[1] is part of Eurocontrol Surveillance Tools unit.[2]

Introduction

SASS-C Service[1] provides two main software suites:

  • VERIF: ATC surveillance infrastructure assessment.
  • PREDICT: performance theoretical calculation of the ATC surveillance sensors.

VERIF

Usage

There are two key functions of SASS-C VERIF:

  • evaluation of the actual performance of ATC sensors or infrastructure against different standard like Eurocontrol Specification for ATM Surveillance System Performance (ESASSP)[3].
  • incident investigation.

SASS-C VERIF is designed to handle all current surveillance technologies (PSR, SSR, Mode-S, ADS-B, WAM) as well as trackers. Evolutions for handling drones, Multi Static Primary Surveillance (MSPSR) and Surface Movement Area-specific sensors are considered in the future.

Modules

SASS-C VERIF is divided into many modules. The key ones are:

  • IRIS: ATC surveillance data recording, decoding and statistics. In supports many framing or coding surveillance data format. One between many: Asterix.
  • OTR (Opportunity Traffic Reconstructor): build a reference trajectory based on the ATC surveillance data generated by the opportunity traffic. This module is widely inspired by the real-time tracker technologies like Kalman filter. But it takes also advantage that it works off-line: the aircraft trajectories are known over the complete dataset time window.
  • CMP (Comparator evaluation suite): it is the hearth of VERIF. The CMP module compares the ATC surveillance data against reference that can be generated by OTR or imported from external source. It generates performance indicators (e.g. detection probability, accuracy) suitable for assessment against standards like ESASSP[3].
  • REPORT: configurable reporting and trend analysis.
  • DISPlay: this module displays ATC surveillance data, reconstructed data and performance indicators on different supports like geographical view, scatter diagram, table or mosaic.

History

Since the beginning of development in 1988 based on MURATREC (1985)[4], the SASS-C software has been under constant evolution to cope with supplementary user requirements, to cover surveillance technology upgrades and to follow software technology changes.

Date Version Platform
1985 MURATREC[4] HP-UX 10.20
11/2002 SASS-C 5.4 HP-UX 10.20
15/12/2003 SASS-C 5.5 HP-UX 10.20, RHEL2.1/3.0
08/2004 SASS-C 6.2b RHEL 2.1/3.0
09/08/2005 SASS-C 6.3-P8
30/09/2005 SASS-C 6.3.1
01/02/2006 SASS-C 6.3.2
05/2009 SASS-C 6.6
07/2010 SASS-C 6.7
17/10/2013 VERIF 7.A.1.1999
28/10/2014 VERIF 8.0 Centos 6.4
15/11/2018 VERIF 8.1 Linux 7

SASS-C v6

In version 6, both suites where included in a common package just named SASS-C.

This early version was supporting only PSR/SSR/Mode-S Radars and trackers.

VERIF v7

Since end of 2003 and in order to prepare SASS-C for the next decade, important software re-engineering has been undertaken in conjunction with functional upgrades, with the aim to introduce up to date technologies in all relevant fields while enhancing system quality. The main functional upgrades relate to the introduction of Aircraft Derived data (Mode S and ADS-B), and multilateration technology in the Surveillance environment.

It consists into four different independent suites:

  • IRIS (IOSS Recording and Import into SCDB) is the front element of SASS-C handling Surveillance Data from various sensors. The functionality comprises decoding (one between many, Asterix data format), recording and computation of statistics.
  • TRES (Trajectory Reconstruction and Evaluation Suite) is the core suite of SASS-C, carrying out the reconstruction of reference trajectories from the input data, and doing the evaluation of Surveillance constituent’s performance.
  • SMART (Simulator for Multi-radar Analysis from Realistic Traffic) is an upgrade of the present real-time simulator generating Surveillance data reports by sampling simulated aircraft trajectories.
  • SCAS (Surveillance Coverage Analysis Suite) comprises RASCAL and CAPT (Coverage And Planning Tool for ADS-B and TIS-B), a new tool to aid in the positioning of ADS-B and TIS-B ground stations by assessing various communication load scenarios.

IRIS and TRES store the surveillance data in a common database.

VERIF v8

The version 8 is the result of another re-engineering for better performance and maximum openness.

The suite has been re-organised as described in Modules sections.

PREDICT

Taking different resolutions of Digital Terrain Elevation Data – DTED as input, PREDICT computes the theoretical performance of ATC surveillance sensors like radars and ADS-B or WAM ground stations:

  • target detection probability
  • interference between sensors
  • target position accuracy

The theoretical coverage is generated in two forms that can be used in other tools like SASS-C VERIF:

  • screening files: obstacle ranges and elevations per azimuth.
  • surveillance map: minimum visible altitude per cell in horizontal plane.

History

Date Version
01/2009 CAPT 1.0
17/03/2015 Predict 2.3
22/03/2018 Predict 2.3.1

References

1. ^1 2 3 {{cite web|author=Eurocontrol |year=2019 |title=SASS-C Service official site |url=https://www.eurocontrol.int/services/surveillance-analysis-support-system-atc-centre-sass-c}}
2. ^{{cite web|author=Eurocontrol |year=2017 |title=Eurocontrol Surveillance Tools |url=https://www.eurocontrol.int/service/surveillance-tools}}
3. ^1 {{cite web|author=Eurocontrol |year=2015 |title=EUROCONTROL Specification for ATM Surveillance System Performance |url=https://www.eurocontrol.int/publications/eurocontrol-specification-atm-surveillance-system-performance-esassp}}
4. ^1 {{cite journal | author=J. Renes | author2=J & v. d. Kraan | author3=P & Eymann, C. | year = 1985| title = Flightpath reconstruction and systematic radar error estimation from multi-radar range-azimuth measurements | doi=10.1109/CDC.1985.268714 | journal = NASA STI/Recon Technical Report N}}

Further reading

  • {{cite journal | author=Žáčik, Nikolas | author2=Novak, Andrej | author3=Soto, Andrés | author4=Drupka, Grzegorz | year = 2017| title = SASS-C processing capability of MSPSR data | doi=10.1016/j.trpro.2017.12.171 | journal = Transportation Research Procedia | volume = 28| pages = 79-88}}
  • {{cite journal | author = Ángel J. Jarama | author2=Jaime López-Araquistain | author3=Gonzalo de Miguel | author4=Juan A. Besada | year = 2017 | title = Complete Systematic Error Model of SSR for Sensor Registration in ATC Surveillance Networks | doi=10.3390/s17102171 | journal = Sensors (Basel, Switzerland) | volume = 17(10) | pages = 2171 }}

1 : Air traffic control systems
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