Simple Procedures for Radar Detection Calculations

Barton, David K.

doi:10.1109/taes.1969.309882

Cited by 53 publications

(17 citation statements)

References 11 publications

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“…In an ideal receiver, to achieve false-alarm probability P fa and detection probability P d , the detectability factor [2] is…”

Section: Relation Of Acquisition Performance and Integration Timementioning

confidence: 99%

“…In high dynamic and weak GNSS signal environments, the received signal has large Doppler frequency range and low CNR (carrier-power-to-noise density ratio). Short coherent integration results in high detector loss [2] [3], so long coherent integration is necessary for weak GNSS signal acquisition under low CNR [4]- [6]. To reduce Doppler frequency loss, long coherent integration time needs small Doppler frequency search bin [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

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Two-stage FFT acquisition method of weak GNSS signals

Wang

Ling

2012

Proceedings of 2012 2nd International Conference on Computer Science and Network Technology

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In high dynamic and weak GNSS signal environments, long coherent integration is necessary to enhance the acquisition sensitivity. High dynamic results in large Doppler frequency range, and long integration time results in small Doppler frequency bin. The above two reasons induce high calculation complexity. To improve the flexibility of acquisition process, twostage FFT acquisition method is presented in this paper. The first stage FFT performs upon received signal across short time, which divides the Doppler frequency range into multiple coarse sub-ranges. The second stage FFT is executed on the output of the first stage FFT, and estimates fine Doppler frequency in every coarse Doppler frequency sub-range. To maintain phase continuous, phase compensation needs to perform on the output of the first stage FFT. Simulation results show that the presented two-stage FFT acquisition method can acquire weak GNSS signals with large Doppler frequency range.

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“…In an ideal receiver, to achieve false-alarm probability P fa and detection probability P d , the detectability factor [2] is…”

Section: Relation Of Acquisition Performance and Integration Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two-stage FFT acquisition method of weak GNSS signals

Wang

Ling

2012

Proceedings of 2012 2nd International Conference on Computer Science and Network Technology

View full text Add to dashboard Cite

show abstract

“…This solution of Equation (2)(3)(4)(5) for Y can more completely be specified by using the algorithmic notation of Iverson (following Shnidman's practice) as given in Figure 2-1.…”

Section: -1mentioning

confidence: 99%

“…The brackets labeled D and E on Having obtained Y for a given PF using this algorithm, we can calculate P2 directly from Equation (2)(3)(4)(5) [i.e., subroutine El by the substitution Y Y/(1+X). Alternatively, if P2 is given and it is desired to find X, we can substitute PIN = P2, find a corresponding Y2 using the program of Figure 2-1 an then find X = Y/Y2 -1.…”

Section: -1mentioning

confidence: 99%

“…To avoid the required entry of K in this case, az well as to provide greater accuracy if wanted, a modified form of the PG program is given here as the 20 program which calculates the detection probability for a nonfluctuating target. This is based on using Equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) for XB in place of the more general Equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). This eliminates the computation difficulty for a large value of K, since it is not used.…”

Section: -9mentioning

confidence: 99%

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