Semi-OT: DARPA LILO White Papers Sought

From: Nicholas Hahn (
Date: Mon Dec 16 2013 - 14:43:11 UTC

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    Possibly of interest to this audience - DARPA seeking white papers by 25 February 2014, regarding a near-term capability to spot low-inclined objects in LEO (due to "long aquisition timelines" for space surveillance network upgrades).
    Full info here:
    Direct link to PDF:
    Here are some excerpts:
    DARPA is interested in receiving white papers to design, develop, and deploy sensors capable of
    uncued low inclined LEO detection, enabling indications and warnings relevant to space domain
    awareness. In the context of this special notice, indications and warnings are anticipated to be
    derived from detections in the form of line-of-sight astrometric measurements. Additionally, for
    this special notice, low inclined LEO objects are defined as objects in Earth orbit with an altitude
    less than 1000km and an orbital inclination of 0±20 degrees or 180 ± 20 degrees (prograde or
    retrograde) at the time of detection.
    The desired capability should conclude with a demonstration consisting of a campaign to provide
    low inclined LEO (LILO) object detections sufficient to determine an orbit with an astrometric
    accuracy that is <6 arcseconds, a timing accuracy of <10 milliseconds, and >3 detections per
    object. Performance metrics for overall desired system performance are provided in the program
    metrics section.
    DARPA seeks specific approaches and solutions with short development and deployment timelines
    (<12 months) to detect low inclined LEO objects. Proposed solutions should implement
    innovative approaches that enable revolutionary advances in current space domain awareness
    As new space tracking challenges arise, the network’s ability to keep pace with the growing number of detections
    is hindered by lengthy acquisition timelines for bringing new sensors online. OrbitOutlook is a
    DARPA program that aims to augment the SSN by adding more data, more often, from more
    diverse sources to increase space domain awareness. 
    The goal of the LILO effort is to demonstrate the ability to rapidly integrate new and/or existing
    infrastructure to supplement the SSN.
    LILO Phase 1 Performance Metrics (non-tradable)
    • System shall provide uncued detections of space objects in Earth orbit up to an altitude of
    1000 km, and orbital inclinations of 0±20 degrees or 180 ± 20 degrees at the time of
    • System should be capable of detecting objects 10cm and greater in size at 1000km.
    • System shall provide all detections with astrometric accuracy <6 arcseconds (to 99%
    • System shall provide all detections with timing accuracy of <10 milliseconds (to 99%
    • System shall provide all observations with > 3 independent detections per object within a
    single 10 minute window. Detections shall be sufficiently separated in time to allow for
    accurate orbital parameter determination.
    • System shall be deployed to final location and demonstrated within 12 months of contract
    start with an objective of <6 months.
    DARPA will host a two (2) hour web-based question and answer session on January 28, 2014 at 1330
    EST. Interested respondents can contact DARPA to obtain the GoToMeeting web address through
    the BAA Coordinator email address:
    BAA Coordinator email:
    All inquiries should reference OrbitOutlook in the subject line of the email.
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