Prepare for the DMC Administrative Order Test No. 2007-29. Use flashcards, interactive quizzes, and detailed explanations for each question to enhance your understanding. Master the content with our comprehensive practice material and succeed!

Multiple Choice

Changing of batteries during an observation can cause the receiver to lose lock on satellites, resulting in a major which?

Losing lock on a satellite during observation breaks the continuity of the carrier-phase measurements. When the receiver briefly drops the signal and then reacquires it, the phase data can experience a sudden jump in value that corresponds to an unknown integer number of wavelength cycles. This jump is called a cycle slip. Describing the situation this way makes it clear why this is the best answer: switching batteries can interrupt the signal lock, and the resulting disruption is the classic cycle slip—the specific term for a loss-and-recovery event in carrier-phase data. It’s more precise than calling it a general error or a data lapse, and it isn’t about an accident. In practice, a cycle slip signals that the phase observations from that satellite are no longer continuous and reliable until the receiver re-establishes a clean lock. Processing methods typically detect and handle such slips to avoid corrupting the position solution.

Losing lock on a satellite during observation breaks the continuity of the carrier-phase measurements. When the receiver briefly drops the signal and then reacquires it, the phase data can experience a sudden jump in value that corresponds to an unknown integer number of wavelength cycles. This jump is called a cycle slip.

Describing the situation this way makes it clear why this is the best answer: switching batteries can interrupt the signal lock, and the resulting disruption is the classic cycle slip—the specific term for a loss-and-recovery event in carrier-phase data. It’s more precise than calling it a general error or a data lapse, and it isn’t about an accident.

In practice, a cycle slip signals that the phase observations from that satellite are no longer continuous and reliable until the receiver re-establishes a clean lock. Processing methods typically detect and handle such slips to avoid corrupting the position solution.