Показана актуальность обеспечения ц

Показана актуальность обеспечения целостности сигналов (ЦС) в системах автономной навигации (САН) космических аппаратов (КА). В целях технологической независимости и импортозамещения предложено использовать для этого отечественную систему компьютерного моделирования электромагнитной совместимости. Представлены результаты анализа ЦС различных цепей реальных печатных плат САН КА с учетом и без учета потерь, с учетом и без учета реальных нагрузок, во временной и частотной областях. Для анализа использован квазистатический подход, реализованный в системе TALGAT. Рассмотрены три показательных примера. Сначала выполнена оценка влияния граничных условий на форму сигнала в связанных трассах с учетом и без учета потерь в проводниках и диэлектриках. Выявлено, что рассогласование трассы в начале и на конце приводит к появлению большого числа отражений, которые могут быть использованы для коррекции характерного увеличения фронта из-за потерь в реальных межсоединениях. Следующей выполнены оценки уровня перекрестных наводок и коэффициента передачи в пятипроводной трассе во временной и частотной областях. Рассмотрен наихудший случай, когда на один проводник одновременно воздействуют все остальные. В результате такой оценки выявлен высокий уровень наводок, который на ближнем конце составляет 6,5% от уровня сигнала в активной линии, а на дальнем – 2,8%. Моделирование в частотной области показало, что первый максимум наводки на пассивном проводнике составляет 20% от уровня сигнала в активной линии и наблюдается на частоте, близкой к частотам навигационных систем. Наконец, выполнена оценка синхронизации сигналов в дифференциальной паре (ДП). Полученная разность сигналов в ДП довольно велика и составляет около 3,5% от сигнала в активном проводнике.

Результаты (английский) 1:

Shows the relevance of ensuring signal integrity (CA) autonomous navigation systems (SAN) spacecraft (SC). For technological independence and import substitution suggested use for this domestic system of computer simulation of electromagnetic compatibility. Presents the results of the analysis of the various circuits CA real PCB SAN KA with and without losses, with and without real loads, in time and frequency domains. For the analysis used the quasi-static approach implemented in the TALGAT system. Consider three illustrative examples. First evaluated the influence of boundary conditions on the signal form in related tracks with and without losses in conductors and dielectrics. It is revealed that the misalignment of the road at the beginning and at the end leads to the emergence of a large number of reflections that can be used to adjust the characteristic increase in front due to losses in real mežsoedineniâh. The next level of assessment implemented cross-pickups and gain in pâtiprovodnoj road in time and frequency domains. Considered the worst case, when on one conductor simultaneously affect all the others. As a result of this assessment identified high level pickups, which in the middle end is 6.5% of the signal level in active line and far-2.8%. Frequency domain modeling showed that the first maximum interference on the passive Explorer is 20% of the signal level in active line and observed at frequencies close to the frequencies of navigation systems. Finally, evaluated the differential signal pair synchronization (am). The resulting difference signals in am is quite high and is approximately 3.5% of the signal in the active Explorer.

Результаты (английский) 2:

The urgency of ensuring the integrity of the signal (CA) systems autonomous navigation (SAN) spacecraft (SC). In order to import technological independence and proposed to use this domestic system of computer modeling of electromagnetic compatibility. The results of the analysis of the various circuits CA real PCB KA SAN with and without losses, with and without consideration of the actual load, in the time and frequency domains. For the analysis used a quasi-static approach, implemented in the TALGAT. We consider three illustrative examples. Initially estimated influence of boundary conditions on the shape of the signal paths associated with and without losses in conductors and dielectrics. It was revealed that the mismatch slopes at the beginning and at the end results in a large number of reflections that can be used for correcting the characteristic of increasing the front due to losses in real interconnections. Proceed as assessing the level of crosstalk and gain five-wire to the track in time and frequency domains. Considered the worst case, when one conductor simultaneously affect all the others. As a result of such evaluation revealed a high level of interference, which at the proximal end is 6.5% of the signal level in the active line and the far - 2.8%. Simulation in the frequency domain shows that the first maximum on the passive conductor pickup is 20% of the signal level in the active line and observed at a frequency close to the frequencies of the navigation systems. Finally, the estimated timing of signals in the differential pair (DP). The resulting difference signals DP is quite high and amounts to about 3.5% of the signal in the active conductor.

Результаты (английский) 3:

Shows relevance to ensure integrity of signals (CA) in systems autonomous navigation (SAN) spacecraft (KA).For the purposes of technological independence and renewment suggested to use for this domestic system computer modeling electromagnetic compatibility.Presents the results of the analysis of circuits CA real printed circuit boards SAN KA with and without taking into account the loss, taking into account and without taking into account real-world workloads, time and frequency domain areas.For the analysis used-belted approach that is implemented in the system Talgat. Consider three illustrative examples.First, performed an evaluation of impact boundary conditions on the signal in the form of highways, taking into account and without taking into account losses in the conductors and dielectrics. Ok,That misalignment between the tracks in the beginning and in the end leads to the emergence of a large number of reflections, which can be used to override the distinctive front from the losses in real-diffuse approach.The next performed assessment of the level and cross-coupling ratio in пятипроводнои highway in time and frequency fields. Considered worst case,When the one conductor simultaneously all the rest. As a result of such evaluation revealed a high level inductive coupling, which in the middle at the end of 6.5 % on the signal level in the active line, and at the far - 2.8 %.Modeling in the frequency domain has shown that the first maximum crosstalk on the passive windows explorer is 20% of the signal in the active line, and there is the frequency, near to frequencies navigation systems.Finally, the evaluation performed synchronization signals in differential pair (JP). The difference between the signals in MT is quite large and is approximately 3.5 per cent of signal in the active windows explorer.