4G Krieger, H Fiedler, J Mittermayer, et al. Analysis of multistatic configurations for spaceborne SAR interferometry. IEEE Proc. -Radar Sonar Nuvig. , 2003, 150 (3) : 87 - 96.
5D Massonnet. Capabilities and limitations of the interferometric cartwheel. IEEE Trans. Geosci. Remote Sensing, 2001, 39 (3):506 - 520.
6Amiot T, Douchin F, Thouvenot E, et al. The interferometric cartwheel:A multi-purpose formation of passive radar microsatellites. Proc. of the IGARSS' 02:435 - 437.
7J Mittermayer, G Krieger, M Wendler, A Moreira, et al. Preliminary interferometric performance estimation for the interferometric cartwheel in combination with ENVISAT ASAR. CEOS Workshop, Tokyo, Japan, 2- 5 A- pril, 2001.
8Alberto Moreira, Gerhard Krieger, Irena Hajnsek, et al. TanDEM-X: A TerraSAR-X Add-On Satellite for Single-Pass SAR Interferometry, 0 - 7803 - 8743 - 0/04 ( C ) IEEE. 2004, 1000 - 1003.
9TanDEM - X - Radar Interferometry with unprecedented Accuracy in close Formation Flight with TerraSAR - X Sat- ellites, URL: www. terrasar, de/en/prod/tandem/index. php.