On 12 November 2014 at 15:34 UTC, after a 7-hour descent, the Philae lander made contact with the surface of the comet Churyumov-Gerasimenko (67P/CG) in the centre of the intended landing zone. Following the failure of its anchoring systems, it bounced and continued to fly ballistically. A couple of hours later, telemetry transmitted to Rosetta showed that Philae was stabilized on the surface and working properly although its precise and final location was and still is not known. (Biele et al, 2015). From the morning of 13 November 2014, CONSERT data enabled an initial estimate to be made of Philae's location based on signals propagated through the 67P/CG nucleus. This rough location was then refined through three sets of measurements carried out during periods of direct visibility between Rosetta and Philae during the Philae's First Science Sequence (FSS) on 13 and 14 November. This paper presents these measurements and the estimate of the final position of Philae in November 2014.

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This article investigates the effect of equal and unequal received powers on the performances of different MIMO-OFDM schemes for terrestrial digital TV. More precisely, we focus on three types of nonorthogonal schemes: the BLAST scheme, the Linear Dispersion (LD) code and the Golden code, and we compare their performances to that of Alamouti scheme. Using two receiving antennas, we show that for moderate attenuation on the second antenna and high spectral efficiency, Golden code outperforms other schemes. However, Alamouti scheme presents the best performance for low spectral efficiency and equal received powers or when one antenna is dramatically damaged. When three antennas are used, we show thatGolden code offers the highest robustness to power unbalance at the receiving side.