Distance measurement-communication integrated inter-satellite link wireless signal structure
An inter-satellite link and wireless signal technology, applied in radio transmission systems, transmission monitoring, electrical components, etc., can solve problems such as the inability to seamlessly adjust the information rate, the large adjustment of system software and hardware, and the low modulation information rate. Simple and efficient structure, fast symbol synchronization, and the effect of reducing hardware resource consumption
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[0041] The present invention will be further described in detail below with reference to the drawings and specific embodiments of the specification.
[0042] In order to meet the needs of inter-satellite link formation or networking measurement communication between multiple satellite nodes, the wireless signal structure of the inter-satellite link integrated with ranging communication of the present invention divides the signal structure into a measurement communication time slot. Three periods of preamble, signal and guard band.
[0043] Preamble period: The preamble period is BPSK modulation mode, and only the ranging channel exists, which can improve the capture sensitivity and shorten the capture time;
[0044] Signal period: The signal period is UQPSK modulation mode, such as figure 1 Shown, including ranging channel (I branch) and communication channel (Q branch), ranging channel (I branch) and communication channel (Q branch) for short code spreading, using preferred orthogon...
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