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Articles

Response to David Wright's Commentary

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Pages 775-781 | Published online: 26 Oct 2011
 

Notes

1David Wright, ‘Response to “Space China's Tactical Frontier” by Eric Hagt and Matthew Durnin’, Journal of Strategic Studies 34/5 (Oct. 2011), 763–773.

3See <www.cast.cn/CastEn/Show.asp?ArticleID=39338> and Shenzhou Institute of CAST, which has a department dedicated to SAR, <www.sicast.cn/Index.asp>.

4Astronomers also use this formula to calculate the increased amount of atmosphere a telescope encounters as it is pointed toward the horizon; however, this calculation is poorly suited to satellites at high altitude because it assumes the earth's surface to be flat and thus is increasingly invalid as the elevation angle decreases.

5For instance see, [Tan Shoulin, Zhang Daqiao and Diao Guoxiu] (of the Second Artillery Engineering College and PLA Unit 96311), ‘’ [Determination and Evaluation of Effective Range for Terminal Guidance Ballistic Missile Attacking Aircraft Carrier], [Command Control and Simulation] 28/4 (Aug. 2006) and [Chen Haidong et al.], ‘ ’ [Study for the Guidance Scheme of Reentry Vehicles Attacking Slowly Moving Targets], [Missiles and Space Vehicles], No. 6 (2000).

6General Armaments Department Deputy Minister Niu Hongguang, ‘The Need to Make Haiyang-2 Satellites Easy to Use, Effective, and Durable' (), China Ocean News (), 17 Aug. 2011, <http://tech.oceanol.com/?optionid=800&auto_id=14248>.

7Roger Cliff, Chad J. R. Ohlandt and David Yang, Ready for Takeoff: China's Advancing Aerospace Industry (Santa Monica, CA: RAND Corporation 2011), 99.

8USA-129 (almost 15 years in orbit) is likely approaching the end of its life cycle. The mean altitude of its orbit has decreased somewhat and its current and future operational role and functionality are not clear. The orbit and operational behavior of USA-144, a stealthy satellite yet to be spotted by hobbyists, are unknown.

9We thank veteran satellite tracker Ted Molczan for this point.

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